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T«
TIIK (JANAUIAN FNTnMoI-OCIST,
the Dipterologist, on arc.ount of their intricate and diverse neuration, which
in some species is ahnost Neiiropter-like in the rctinihuion.
Doubtless the niiml)er of our species will he augmented by futur* dis-
coveries, but yet we can never expect a very material increase.
Our three descri])ed species, to which I here add a fourth, may be
diagnosed as follows. I have never seen Macquart's species, but it may
be distinguished without difficulty.
A. Proboscis short, ])rotruding but little from the opening of the
mouth. .Antenntc small, short, broadly separated ,; wings not reticulate,
three submarginal (X'lls, the outer posterior one closed before the border
of the wing, first posterior cell oi)en, fourth (the one just behind the
discal cell) closed, anal cell narrowly open.
a. Kyes jiilose, second posterior cell open. — Hirnwneura brcvircstris.
aa. Eyes bare, second' posterior cell closed before the border of the
wing. H. ( Parasy mm ictus) c/ausa O. S.
B. Proboscis long, directed backwards. Face without ]jrotuberance :
antenna; small, short, very broadly separated, third joint nearly orbicular,
style of three joints. Eyes bare, contiguous in the male ; ovipositor of
female with two slender diverging lamella.\ A^'ings not reticulate, three
submarginal cells, the outer ones open, first posterior cell open, fourth
closed, the anal cell open.
I>. 'i'hird joint of antenna* nearly orbicular, or slightly pear-shaped,
third joint of style not much longer than first two togeth<'r; second
posterior cell closed and i)etiolate. Abdomen indistinctly fasciatc. Length
9 •"• Rliyiichoccphaliis Sadrui, Wlstn.
/>/). '["hird joint of antenna obtusely oval, third joint of style three
times as long as first two together. Wings more slender, second posterior
cell open, .\bdomen distinctly tasciate. f.ength 1 2 m. R. -.o/aticus,
sj). nov.
HirmoiU'ura brcviroitris, Macipiart, Dipt. Exot. Suppl. i, 108, 8j Tab.
20, fig. r. Yucatan. This species differs from the type of ///>-w<>«<i'«;'<?
(H. obscura (y\ .) iMeig.) in the pilosity of the eyes, and closed second
submarginal cell. Baron Osten Sacken mentions (C'at. Dipt, note 142)
that he had seen a sjjecimen of Hirmoneura from Colorado with the
second posterior cell open. It is possibly this, but I suppose a new species.
H. c/ausa, O. Sacken, Western Dipt. 225, Texas.
o-^~
t<c
I'HK t'ANAUl.W F.NTiiM.tl-OfilST.
71
I
Syn. Parasy III milt IIS r/aiisiis. Higol, J'ull. Soc. Kiit. Kr. i.Syfj. Xo. 8 ;
Annak's 1N81. i>. 1 5.
The genus Ifinnoiicina lias been used in a wide sense, hut if such
(;lianvt:ters are made use of as serve to distinguisli genera in allied families,
most of the sjieeies would become generic types. I'he closed sub-
marginal and second posterior cells in this species have induced Higol to
make it the type of a new genus, but the same reasons would re(|uire new-
generic names foi- //. hrcviroitrk and the species of Rhyiulioccplialus
described below. l-'or the jtresent, therefore. I believe it wil! be better to
hold Parasyiiiiiiictiii in abeyance.
RhyHchoceplialiii Sackt'iiL WIstn.. iVans. Conn. Acad., vol. iv. p. 243.
1880.
Belongs in the division with closed s^u ond |)osterior < ell. to which R.
Tiinsc/icri Fischer, the ty])e, pertains. A male specimen from Washington
Territory, since received, has the proboscis considerably shorter, the eyes
nearly contiguous near the ocelli, ocelli with a cons])iciious tuft of black
pile and the style of the antenmv very indistinctly jointed, even under a
compound lens.
I"'k;. 4. -Wing of Rliyihluhiphalus 7\>/ati\ii.^, Wi.ilii. ii, lliiril »ii!'iuargir..'il cell ;
(', ( , (/, <■, /', first-fiflli posterior ceils.
Rliynclio'-'plialiis volaticiis, sp. no v.
$ . JMack with light yellowish pile. Head brownish b ick, thickly
clothed with pile. I'ronl thinly blackish pilose u\\ the upper pari; on the
lower part, the face, cheeks and occiput with abundant sulphur yellow pile ;
antennie short, reddish yellow, fust joint concealed by the pile, second
joint sub-tjuadrate, third joint obtusely oval : first joint of style very
short, second about twice as long, third joint three or tour times as long
as first two together. l^roboscis reaching about to hind coxie. Thora.v
bruwniah black, clothed with the same sulphur yelltjw jjile, abundant and
bushy on the pleurae ami pettus, (.)n the dorsum thinner, the ground color
J
f
J»' V
T
72
Tin: CANMilW I'NTiiMdI.dClST.
>ll(iu iiii.; llildiij^li. .\li<l(iiiHii >i)i)il ;iii(l Iu'ikkI. liiu\\iii>li lihuk: ^rcoiul
M-'giiiciU ;iIm)\i_' llii< kl\ \(ll<i\\ |i:li)>i- in ilu- I'ldiii i>;irl. lirliind hkhv or less
l)l;i(k. its hind hoidir jnd ilu' liind IjokIii-^ of ilir icnKuninL^ M'L!,nK'nls
(■()ns|)iru()Usi\ Irinj^L-d w iMi uiiiir umKninni ; si'tond. third and tourdi w itli
liliK k ^lonu'W liat intt;rnti\rd uilh \ iIKju i.sii tdnifiiluni ; ivmaininj;M-i;niciUs
more or Ics;. clotlu'd widi \elio\\ish pile, third and I'onrih M\i;im'nls on ihr
silk's willi (()ns|>i( iious liifls of l)ki( k pik'. l.aiiK'Hac of the ovipositor
slender, hhick. .d)()iit as loni; as interniech'ate femora. Legs Ijrown. femora
•■.onr.ealed by ahnndan; yclluw \>\\y. esju'cialK ni die |iro\inial parts, tips
yellowish, hind tihiae and laisi Maiki-h. W in^s h\ aline, more slender
than those of A'. Siulu///. lii>i aiid second sulimarj;inai. and first iiitd second
])osteri()r cells open.'hird .;iid lifih lyingaloni; the postt'rior ma rp;in. separ-
ated !)V the Vein runnim.' into dn. posterior horder. I.enuth i 2 m.. of
\vini,'s I I m. T.vo spec imens. I lorida. VwA'. kile\.
When denuded, die sei ond and third sei;nienis of the al)dt)men may
show a large redihsh spot on eat h side : they are prohahlx not, however,
a (oiistaiu mark. This species a'^ree- with A', lauiasiiiis. i'ischer. in
having the second posterior cell ojieii.
The three.' other species oj" this genu- now known are A'. 'I'aiisclu'ii.
I'isc her. :ind A', citiicosiiii.^. i'isch'.i. from Soiilheni Kussia and Asia Minor,
and R. d/ho/dsr/iiti/s. W ieil.. whose hahitat is unknown. That I'o/atiiiis
is not the same a^ alboj'dsciatiis seems e idem from the description of the
dbtlomen. Ilu white I'asc iae are 011 ilic t'xtieme hind borders, with die
remainder of cai h segment Mack, while in Wiedemann's s|)ecies the
u hite lasciae are in from
()\ rill', .NoKlll .\MI Kl( AN ( Al I'l.N.k; Id 1 1 !■ I doll UN. I'
i;\
K. i.koii:.
Since the groups are \ery difficult of scientilic definition in the Xoc-
ti/ii/(i\ the present must not be (onsitlered as standing on more than a
comparative basis. In my .New ("heck List the genera ate arranged
between the Calf^iiur and lldiothiiuf. 'Ihe arrangement I would only
mt»dify b\ restricting the Ciif'i'i.v to the .\or1i Ameritan genera — Calpc,
with one species, perhaiis tin same a.-- the luiropean, and Pliiprosopus,
with the species ,ti////rii/i<ilii,\\. called a (ieometrid by /eller, and which
n outline has a resemblance to the aberrant Notiuid geiuis /')oj\oi/rs.
7
r— ^
^^
I^OTJIB AMHIilCAN STHVlilD^^i^L
By B. V/. WiiliBton. New Haven, Conn.