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MICROCOTY RESOIUTION TIST CHART

iANSI ond ISO TEST CHART No 21

■ IS 12.2

_^ ^^lPPLIEg_|fVHGE_Jn

^^^ '653 EasI Main Gtfee^

".^= l"6) 48J - 0300 - OBone

^S ('16) 288 - 5989 - Fa.

REPORT

OF THE

CANADIAN ARCTIC EXPEDITION

1913-18

VOLUME III: INSECTS

PART C: DIPTERA

Crane-flies

Mosquitoes .......

Diptera (excluding the Tipulidae and Culicidae)

C. P. Alexander
H. G. Dyar
J. R. Malloch

SOUTHERN PARTY- 1913-16

ij

670

1 ■'•» I :■;

C2t

V . !"'>;'
,,1, .1

OTTAWA
J. dc LABROQ- "RIE T.'VCHfe
PRINTER TO THE KINGS : . T EXCELLENT MAJESTY
I'

Issiirrl July Ulh, I91<).

REPORT

OF THE

CANADIAN ARCTIC EXPEDITION

1913-18

VOLUME III: INSECTS

PART C: DIPTERA

Crane-flies

Mosquitoes ...

Diptera (excluding the Tipulida and Culicida:) .

C. P. Alexander
H. G. Dyar
J. R. Malloch

SOUTHERN PARTY- 1913-16

OTTAWA

J. de LABROQUERIK TACHft

PRINTER TO THE KINGS MOST EXCELLENT MAJESTY

1919

Vol. iii ~46%.3 -1

Issued July 14th, J919.

^ i

t

t c

/ V

II

II

II

The Crano-flies collected by the Canadian Arctic Expedition,

1913-18.

My ClIAKLKM r. Al.KXA.MlKll, I'll. I).
IVTIIODI (■•|l,.s

Till' (•' 'lection (if tranc-llifs iii:tii<' l.y the ('aii.'MJiaii Arciic KxiM'.liti.in is
«|iiiic cxtci. IV', iiiiil iiii-liitlcN iiliiiiit KM) -piTiiiii'iiM (il ailiills. larva'. .iihI |iii|m-.
The lyiM'M and uniciucs have lii-on placcil in llic Canadian Naliimal ( '.illi'cli.in '
certain (if tin paratypcs and duplicatc.-i arc retained in the collcclidn (if llic
author. The present report han lieeri divided into two treneral portion.s, the
first on the ta.xononiy of the adidt flie>, the second a con-ideration of the iiiinia-
ture staues and the liiolonical data secured liy the collector. Mr. Frits .lohatiscn.

The material repre.-cnts as satisfact(n-y a collection of Arciic .Vinerican
Tipiilida' as has yet l.ceri linmnht toKcther. The ilinerarv and jteneral narrative
ol the Southern Division of the Kxpedition has lieen recortU'd liv Dr. U. M.
Anderson (|!)I7).'

II

niBLIO(iK.\l'IIV.

There have heen rather numerous .speci( s of crane-tlies descrihed from the
Cunadian .Xrctic Northwest, the more imp( rtani reports on these c(dlecti(>ns
heiiijt as follows: —

Kirby. Will., (IsJIj id the siip|ilrMii'iil tdCiipl. I'lirrv's Hrst Vdvimc (|cs<ri»i(il SUiiiinniiH mnii
(Kirhv;. " ' '

Curtis, Jdhn (IWl; in the up|H'inli.\ t(i Homs's voyunc to ih,. .\rciic region.-, ilcscrihcd Tiimla
nriiiia ( iirtis.

Ix«".v, Hermann ( 1H»«-1H(W) in the Ccntiirics of North Anicriciiii Diiilcrii (Icscrihol the niimrroiw

»i)('('icM of Tiimlinii' collected by Robert Kciini t, now in ll». .Miis.iiii; of Coniiitinilivi'

/iK.loKy at Cambri(Mc. These .siiiciniiiis bear the (seii.nil label (,f -IIUT " ,,i,iv a few
of them havinK any more exact label. In another paper l I'roiceiliiiKs of the .\(a<"leinv of
Natural .S(;ien<('s of I'hihiilelphia, September, KM.'), pp. 4.->H-4(m) I have .li.Meuss(^l I.,«.w'«
Hpecies and their |,.-e<enl c(in<lition.

0»ten-.Sacken (lH.5<>-l^Mi<.),l .Imribed most of the lamnobiiiue eolleited bv KennicotI and al.«o
(I.H7tl) TnniUi licMiUi, from Polaris Imy, Creeiiland, at about S> d(Ve<'s north latitucie
eolleclcd by Dr. K. Hes.sels in IH72. '

Borgroth (ISMH) described several new species mostly from Sitka, .\la.«ka. Most of these were
rediscovered on the Harriman exp(Hlition (see Co(iuillett).

oton (1H!);j) (lescribed Slygrroins hnf/rolhi from .Mi'..-<ka. The tvpe was r-r.(.ordnl as havinu-
)een placetl in the Kansas Tniversity coUection, but is not mentioned amoiiK the types ni
Hunter's list (Kan.sas Iniversity Science Hiilletin, vol, S. Ny. 1. ; IS; lltUi nor "have 1
been able to locate the s|H'cimen.

Doane (1!KK), 1!K)1 ) dcsoribe<l a very few s|M'ries from Cnalaska, his types beiiiK in the coUeetion
of the I nited States National Mii.seuni.

Coquillctt (1!HK)). The Crane-flies of the Harriman Iaj "litioii to Alaska, the types are now
in the collection of the Cniteil Slates National Mu.si'um.

Dietz {191,'>), two Limnobii'ie crani'-Hies coUect ■<! by Krancis Harper in the .\lliabaska country

Alexander (llll '(-date), species coll'ited by Kcnnicoit m the Loew cr)ll,.ctioii but never described
by IxM'w; the types are now in the collection of the Mu.scum of Comparative /(miIorv
The cran{>-flies of the Pribilof Lslands, now in the collection <if the l'Miii'<i Slates BioloKi(Vl
Hur-ey.

I'ho most important collections from the Arctic Xorthwest tii;i\ he con-
sidered to he t'u' folU.'ving: Keiini(ott's collections, the Harriman Expedition,
the Pribilof is) ads collections, and the present one.

' Report of the Department of the Xuvul Service for the Fisi:,l ^■^.arcnain^t March .list. 1917. OtUwn-
y^\Z~-iL^H.'^l^:"^V'''"'' "' "-f-"'"*'™' -'^"-.v, IV,... f M.n..,, for the calenUar
Vol. iii— 46««3— 11

•I I

(nun inii Aniir Hj-pi hlinii. Hll.l-IS

Kmiii I In- iilxivi' iiiitlnial .1 uimmI iilia of llir ucniial l'.iri«» i>f ilir cruiii 'ly

ritiiiiit iif till ('iiniiiliari Aniic NottliwfHt iiim\ I Ittaiin'il. Tlii' f«|).(it« arc

tiliiumt, if mil all, foiiiif <if (lull. .«i>iiiliii' loliMiralioii Imiwiix nr kitvm aixl iiionI
i.f llinn arr i.f ximplf. priinitivc ui«aiii^ilii>ii. A (•i.ii>i(|iral.l(' iimnl.tr -how
iimiiistakalilc hinn.- of ilcKciiciai y in thi' wiiiu^. ilii:< r tniliiioii hfinii paitiiiilarly
iiniirral.li' in the I'lihilof i«lancl<', wIkmt fully half »( tin known .N..i..s have
the wiiiKK more 01 lr>s atrophi.d In llic prrrriit rollrriinn, iwo oC'ilic l.iniiio-
l>iini' forms sliowcil the tir-l slaiirs of wiinj-atrophv, l.ut all of tlic ten Tipiilinr
MH'.ics art- fnll-winKi.l, Soim of llirs|«Tirs of Arrtir I'lpilli.la. havr the head,
the Ihoracir intervals, the pleura, roxa'. ete., clotheil uit|| an aliumlaiit lonn,
ereit pultescence. Many of the Aretie crane-tlies seem t<i lie very hieiil in their
(lisiril.iition. Thus the eolleciions from the I'riliilof ishin.ls show not om>
of the species taken ilsev here In the Canailian northwest iwitli the possihle
exception of Trlchoont). Similarly, the collections of the JIarriman expedili.m
anil the present collections show that the species are in lartfe part very local
ill their ilistrilitilion, the natural harriers of miiuiitains ami larue water-l.oilii-s
huvinu proveil a very etiicielll check u|>i n their ilispersal. In the present co|-

le'-tion there are a total of sixteen species, only two or thri f which have heen

fiiuml el. '.'where; of tin -c Tipula iintii-a ami SliiiiinipiK jiiiith are rather well-
kmiwn .Vrctic Aiiiericaii -peciee, ami the Trirhnnnt is pmlialilv Mularctic in
its ilistriliulion.

The collection that i- reporteil upon in this paper is consliiiiteil as follows:—

Hhijiihiilit -

Ti'iihiH'Wltitl'
Trirhnrltil

Tii'iiliilii

l.ittitittftiinit' ~

l,nnufimin .
Kriititttrini.
LittitiiifihihiH
I'liliriiiii.

Ti/Hitniti —
Tifnihtii.

I >nninottn/itl
Kriii/ttirn

LimHojihiltt
Triiiiiihiiiin

Sti/fii rofthH
\i iitinihunil

Ti/iiilii

I »|M'('il'S.

sprilc-

The jjeiieral lemlencies of ilistrihiitioti of crane-flies in the liitfli Arctic
renions are will shown liy the aliove list, the nmnipriwnt Trirhiircrti. a ilominance
of IViliciine ami Tipulin (lenera, with a sinatteriinj of l.linnobiini. Krioptcriiii
ami Limnophiliiii. The extensive trilies Autnrhiin and lli siitumiiii (in the
strict .sense)' seem to he entirely lacking .so far as known. The /'tiirhopUri'htc
are likewise lacking ami the sinnle recoril for the Tiiniiilni.lir i /'nitopldsii) \s
iinsatitjfactory.

Ai>ri,r Fi.iKs.

Family TIPULID.*.

SuWainily LIMNOBIIN.«.

Trihe I.IMXOimSI.

(leiiiis Dicranomyia Stephens.

Dirriinoiin/iii .■<ic|ilicii^; ('atalintuc of Hrilish insnis, vnl. J. p. '.'l:); IS'Jit.

Dicranomyia alascaensis, n. sp.

Antenna- hlack; lalteres sli<>rt; wints nearly livalino, with a larfje. oval,
brown stinma : Sc ... remote from 1 he tip of Nc, ; w\\ JirM .1/., closeil : fomora yellow,
tipped with luown.

■ CoiicriiinK liic status of the Irihr 11, .n,t,„ri„i. rciid the rcimirks iiinlci- tlii. Kcnus
I'fMalmtiilii. luige (MMl.

< iiltii -Jllix .'> C

FkmaI.k. I.i'IikIIi, .'i'.'i mill.: winu, ti-H imn.

Himlrillll Mini |i!il|ii lilark. Alllrllllil' liluck. llic litlr'tll tlMUrllnr >i'KliH'lili
<Mil!irK<'"|, Iii'ViiihI ihf tii'll ovmI, lll'' l:l>^l M'Uliicut cIm!!".!!!' II' lI •I:ii k-<'ti!t)lini|.

<li!«('oliiiirr<| ill ihi' tv|M'.

'i'lmrnx lini'k-i'nloiirt'il. > .<('iiliiiiri'i| in llic i.\|m\ |hiiIimIiI\ ({ir\ |>iiiipii»r:
plnii'.'i Ki'i'.v |iniiniiM'. IIiiIIi'M's rilniit, piiir nt tlic li.')-)', llii' riiiiMniili'i' liinwii.
\.*'Hs tt ill llir ciixii' ami lidclianlcr^ m'IImw; IViiiuim (lull M'IIiun. llir li|>« lnoailly
liriiuii, miiiii\vi-l III! the I'luc iVimira, lnnailcr on tln' im-iriinr IVinnra; liliia-
aii'l lar-i vitv liulil luiiwii, tlir lirmiiial scumriii- "I tin' lalirr ilarki'mil. \\ iiiif>
iicailv livaliiii'; ^tiKiiia laiyc. t.val. Iititwii: vciii" lii'ii\<ii; vrnaliun ( |M. I, liu. h
Ncj it'iiHili' from tilt' li|> III' N so that Sc, alonr i* al>oiit t'i|iial hi llir liar-al
(li'tli'xioii III ('((,; .S('i rml.x juf*i o|i|iosit<' llic oiiuiii ol' Us : r at till' lip ol' U\\
l{x al>iiiil Iwiri' Hfi loDK na tin- liaj-al ilrllrx'oii ni !{,■.. rrW Jii'.->f M. cio-cd; lia!«ul
ili'tlrxioli of Cii, at tlir fork of M.

AImIoiiii'ii ilark lirowii. prilitiim', thr pleural iiiti'KiiiiKiit ami tlic >-'ll\T^i of
till' ovip'isitor yi'llowisti.

Lo.alitv: llnlolvpi'. ., Nome, Alaska. Aiii!ii>l 21, J.'i. MM' i oliaiisi'ii).
No. 7S.

Ill till' cloiiKatr .N'('i tliii spcrii'.s siiuncst^ h. hnlti rnhi Os,, .i-Sackcii, luit
tliJH i.s alu'Ut till' onlv feature that tlic two spcr-i's havt- in common. In oilirr
r»'s|K'cls '■ 'ciiiH closer to I), iniiiiln Diclz' from 'I'altsoii river, .Mackenzie ili«-
trict (iiol '.ocker rivi'r as st.ileil in the criuinal ilescription ). Imt it is a miicli
ciiialler fiv ami the details of liolh colour ami venation are ilitTereni,

Tr'ie KIlloriHIUM.

( leiius Eriuptera Mei^en.
."<tilntciiii- Krioptvra .Mi indi.
Eriiiiili rii Miincii; IHikit's Mim.i/.iiic, vol. 'J, |i JliJ; l.su:t.

1

2

Erioptera iKriopterai ani^usiipennis, u. >p.

(iciieral colouration dark lirnwn wil (trey pruiiiosity ; wintis very loiin

ami narrow.

M.\I,K. I.ciinlh, 11 mm.; vvi..i;. .")• I i ....

Hostruiii iiiid palpi Mac]- .\Mt'. .lue Mack, the flagellar secmeiits ov;il.
Head dark (in-y.

Mesonoliim hrou" more (ivi . : i, en the sides; pseudosutural fovea' con-
spicuous, tratisver.se, I i.mi . IMcir;. •' ill jrrey. Halteres rather elonpite. hrown.
I.ejis dark lirownisli I .. throiiiihoiit. W'inns ver\ loim and niirrow showintj
the first .staijes ol atrophy althoiiuh ihe \enalion is normal; nieiiilnaiie slinhtly
suffu.sed with lirown : stitjma indistinct : veins dark lirowii: vena;ion fl'l. l.fiji.'J)
the veins are all very elongated due lo the nre;it narrowing of the wint;.

Alxloineli dull liiey, Ihe secmenis indistinctly paler caudaily and here
with frillies of Idiin (joiden hairs that are more sparse elsewhere on the surface;
male hypopytiium with Ihe pleural appendages slender, poiiiled at their lips.

Locality: Ilololype, ', Mernard harl>oiir, |)ol|)hin and Inioii strait, North-
west Territoiies, .Vii)iusl 17. I'.U.') ( F. .lohaii.sen). No. lOl.'i.

Hetidily distinnuished from all other memliers of the genus liy the lolin.
narrow wiiuis. Tlu second anal vein is straight as in the suliKeiiiis Aciiphinia
to wliicli group the species may perhaps he hetter referred,

' ('iiiiiiiliaii KiilciiiiciliiniKl, viil. 47, ' .. ;i;!l-;!;i2. fin-, Oitolnr, 191.").

( un,„lni„ Arctic Exi>c,liti,w. Wl.i-is

Till),. LIMS01>linjsi
(i<'ni..sLimnophila .Mar,|„art

>mI,k,.,i,i, Dactylolabis Oslin-Saikcn,
l>i"l!iMnhis {)s\vu.^..,.\^,.,,. 1,,.,,. ,■ , ,

■<)W, the

Limnophila .Dactylolabis) rhicnoptiloides, n .„

'■•'"(•lal ,.ol.„i,ati()ii black dust,.,! uitl, „.. • ,

.';'...^!s:""i,:;::i !:al';;.:;;:M:^;;;:;rt.!t'^ -^V-";" '■'-^- •"<• «- «

/^/'/c.././//;imsno;ta;;;;;;airahllhH!;Ml:'''^-^^^ '" 'V>-, "I""i<- tl... na,....
'"<l'«'at.' so„H. notal.I. p.vn£ r'i . M ' t 1 ''''''\'.'''''' ''' ""' "'""atun- stages

Tribe I'KDICIIM,
<ienMs Tricyphona Z.tt.rsf.MJt.

VW,-,,M„„„Z„,t..rM,.,l,: Ins,.,.,a Lap„„ni,.:., I)i.......

pli'ia, p. S.-)l; l,s:{H.

Tl

Tricyphona brevifurcata, n. sp

iKracic

stnpt

'i';ismi, pal,, biownish givv with thm

mill.

(•IHIS|)lCUOH

"ngiT than its f,)rk
wiiifT, about !> nun.

(lark

Drown

Crane-flies

Hostniin and palpi dark brownish black. Antenna' black, the flaKclluni
broken. Head small, dark brown, somewhat paler laterally.

Mesonotal praescntnm pale brownish urey with three dark brown, very
distinct, stripes, the median one broadest in front, narrowed behind, anil endiiij;
before th<' suture, very narrowly bifid behitid; lateral stripes shorter and narrower
crossing the suture and sutTiisinn the sculal lobes; scutellum and postnotum
dark brown. IMeura dark blue-nn'y pruinose. Halteres linht iirown, the
knobs darker. Lejis with the coxie sjiarsely pruinos(>; trochanters dark brown:
reiniunder of the legs very dark brown, oidy the fore femora a little l)ri(;hler at
the extreme base. Winds subliyaline: stifima rather indistinct, pale brown; -4
darker brown spot on the r m crossvein and the basal deflexion of vein l{ 4 ^r,;
vein Cn indistinctly seamed with darker: veins brown: veniition (I'l. I, fij;. 4)
crossvein r near the tip of liy; vein U \ + -, a little lonn<M' than the vcrv short
fork.

Abdomen elongate, blackish, with numerous, scattered, appressed k"'*'''"
hairs; basal termites with a transverse linear imi)ressed area before mid-lenj;th
of the segments, these interrupted medially: the sternites are narrowly and
indistinctly marfiined caudally with pale.

Localitv: Holotvi)e, c', west of Konganevik, Camden bav, .\laska, .lulv 4,
1(114 (F. ,)ohansen).'Xo. 4:{2.

This is a very distinct species of Triciiphdnti, havinn the fork of vein l{ 4 +5
shorter than in any other American si)ecics of the nenus. The winjis of th<> type
are badly broken, but otherwise the specimen is in nood con<lition.

Tricyphona frigida, n. s|).

Helonfis to the diaphaiui. uroui); size small, winji under S-.") mm.; treneral
eolomation (jreyish, the thoracic dorsum with narrow brown stripes.

M.\I,E. — Length, .")S mm.; wiufi, "S mm.

Fkm.\i,k. — Length. 7-.^ mm.; ivintr, 7o tnin.

Hostrum, palpi, and antenna' black. Head (jrey.

Mesonotal praescutum jiny with four brown stripes, the median pair
.separated by a narrow vitta of the ground colour, Pleura grey. Halteres
brown, the kiioiis a little darker. Legs with the coxie grey: trochanters brownish
grey: femora pale brown, passing into dark brown before ini<llengi of the
•segment; tibiie and tarsi dark brown. Wings with a strong brownish tinge, the
stigma <larker brown; indistinct l)rownish seams along the sector and the cord;
venation (IM. I, fig. .")) /^^• strongly arcuated at its origin; r close to the tip of li^:
r-iii about e(|ual to the basal deflexion of H:,.

Abdomen brownish grey: valves of the ovipositor brownish horn-colour.
Male hy|)opygium (IM. IL fig. 20) with the pleura short and stout, the apical lobe
densely besot with acute black spines; pleural appendage yellow, ;it the tip .-md
on the cephalic face with a few elongated stout bristles; at the base of the
pleurites, a sickle-shaped hook ending in a short, subacute tip; below this a
smaller curved hocK directed cauda<l. In T. ilinjthanii (I'l. IL fig. 21) the
condition is (piite similar, but the pleurites are even shorter and stouter: the
hooklike appendage at the base of the pleurite is scimitar-shaped, at the tip
produced into a long drawn out point; the smaller ventral hook is straighter.

It is probable that fresh specimens are not co|oure<l us described above.
The type-material is bailly discoloured and matted and it is difficult to be sure
of the exact condition in fresh or better preserved mat<'rial.

Locality: Holotype, o\ Ketchikan, .southeastern Alaska, Septend)er 10,
191(1 (K, .b)hansen^. " \o. H72. .\llolype, 9. with the type. No. 877.

T.fri(ji<ln belongs to the group of species that includes (xnloma I Doane) and
dinphanii inoane), these three species .showing the following group characters; —

Full-winged, the wing or its vemUion showing no tendencies to atrophy;
median cross-vein present, dosing cell fir»l M ,\ cell R^ very dee]) so that the

8c

^''"""'''•" .\rclu- h:^,u;t,t,nn, wu.is

^;:^.f :::rr -r;- ^v^"- -i.. u. .,,... „... .it,. ...,. .^ , , ... ,. „ ^

-■««":;:;■ v'x,iSSi,#t"',s--'«-

• I't'i-ff l):iy, Jui

' " -' ^""^•""vcr, B.C., .^r..„.,.l,

t^Mlifamiy TIPUI.IN/E.
Tril.c Tl/'C/JX/

(i.iuisStygeropis I,,m>u

T"":! """ " '"■■■■— "'-■-.,:..«.,«,

""itinfT tlu. L<m,,,>no ;,ii,i r//,,,/,, tyjios. ^ '''"'""' '" "atun., in .son,,.

Stygeropis parril ( Fvirhx )

CrTT"'"" "•'-'■■" ■— v™.

1. '^ '" •

I'alj.i short l,l.,:kr,"'"^''^'^-^ "''''■

Crniu-iliiH

!) <;

a >ui>()val fiiittciicd lolic, dull yellow in colour, slijilitly hroadiT at the hasc than
at the tip which is obtusely rounded; the outer face of the aijpendage with
sparse, short, scattered hairs; inner i>leural ai>pendaRe (F'l. II, tic. '.'4) a large,
l)ale brown lobe, flattened, .at the ti)) produced into a long, ciirvecl ])oint that
is slightly expanded at its ti]), the inner face with almndant lonj;. pale hairs.
Ninth sternite extensive, a dee]> split on the mid-ventral line, the margins
closely aj)proxiinated or contiguous.

The following ten s))eciinens are in th<' collection.:

Localities: Nos. 4;{4, 48."), 48(>, and 4:{S, west of Koiigcnevik, Camden bav,
Alaska, ,Iulv 4, l<tl4. Nos. 111»4. 11!)."). Collinson iioint. .Maska. .Iiine 22 2:5,
I!)14. Nos". 422. 42:<. S22. and H2S, Bernard harbour. Northwest Territories,
July 1 14, l!tl(), and in ,luly-AuKUst, lOlo.

The most conspicuous differenci s between this sjiecies and the next. .^.
parrioidcfi. iiro in the dense erect jnle of the present species, the clear blue grey
colouration, the conspicuous ditTerences in the structure of the antennie and
hypopygium of the m.'ile sex, etc.

.S. Iwnirothi W'illiston' is unsatisfactorily described and the type is ajiparently
no longer in existence as was stated earlier in this paper. It is a blackish grey
species with the st(;m of the halteres and the bases of the femora rodilish yellow
and the wings unifortnly tinged with brownish. S. sortliila I.oew (Century 4.
No, 42; 18(i;}) has the rostrum black as in the present specie.-, iind agrees in some
other features, but is a))])areutly a different species.

Stygeropis parriotdes, n. sp.

Frontal prolongation of th(> head light brown: antenna- short, the flagellar
segments with an inconspicuous transverse ridge before the middle, this bearing
a fringe of short, pale hairs; mesonotum greyish yellow with a narrow, dark
brown median line, the sternites and pleurites clear, light grey; abdominal
tergites with a broad, dark brown, median line; wings reddish brown; ])etiole
of cell Ml very short or lackiiig; jiile on the body short, not cons])iciious as in
piirrii.

M.\LK. — Length, 14 1.') nun.; wing. 11 12 mm.

Pali)i short, dark brown. Frontal i>rolongation of the head light brown,
short; nasus distinct. Antenna' (PI. II. fig. I'A) dark brown segment one
elongate, transversely wrinkled; segment two cyathiform; segment thr"e
elongate, broader distally; segmei\ts four to seven broad basally with a trans-
verse row of i)ide hairs befctre mid-length of the segments, on tiie ventral face
with one or two small sincules; terminal segments gradually attenuated. \'ertex
greyish brown, with luiinerous black bristles that are lacking on thi' median
line; vertex jiroduced forward on the UK'dian line into a tongue between the
anteiuval bases; gena^ with numerous black, bristle-like hairs.

Mesonot.il jiraescutum yellowish grey, brightest before the pscud<i>utural
fovea', the three usual thoracic stripes not distinct, ,nly a \(r\ narrow dark
brown median line running the entire length of the mesonotum. Dorsal |)leurites
concolourous with the notum; sternal |)leurites and sternum clear light grey.
Halteres dark brown. Legs with tiie coxa- clear light grey; trochanters brown;
femora brown; tibia" similar, darker at the tips; tarsi dark brown. Wings
with a strong reddish brown tinge, cells C and Sc more saturated; stigma brown;
the membrane along vein ('i< more greyish; venation (I'l. I, fig. S) Ha elongate:
cell ,l/i sessile (as in the genus .\< phrnloinii} or very short -])etiolate.

Abdominal tergites reddish brown with a broad, distinct, dark i)rown,
mednin line; caudal margins of the segments less distinctly brownish; a narrow,
sulilateral, brown line; extreme lateral margins narrowly dull yellow. Sternites
somewhat similar, the basal two-thirds reddish brown, the apical third dark

' Kansiis I'liiviTsity (inartcrly, vol. 'J, i). til; IN'.M,

I

H)

('(iiiinlian I ,;/,,■ /.•

''""■"■■1 .■.■.i..i, ,1 ,, "■,-■" ;■' f»ii..T , „,, , ,""': i""i«T,„„ ,;„;/ '; "■ v- »

-".r '^^.-y f "=;^::7;i;t s?"-"""' ;n;;;;;;i;r^

*" -^ •"'*'^""^ .-'■ -'.i-'; ISO,,

^'ephrotoma arcticola. „.

(' ^""'3 arcticola

faiiitiv,),, ;'"'"'"• of th,. ,1 ''•'"'i"l<>-<iit!i/-il f,„- "'"'" '"'.'If 0, .

''■iltcrcs 1 I. "'"'''-{'ifccs of I . ""'"ilxiiiics ,||,li ,.,.|| "''"'" ''lack

P"'<'i'. ill s„„.„ *- -V'-^'' '>lack: lat,.,-..i --r.i, kii j/, ,s,..s,s |,.

••'PP.-n.laK, J> ' ' ';.'"'" I".int that ' ,•„, "{•••■•'"•I, Anclv j,, t"' ^ -''ape,],

■'■ -""--^^^^^im^^^

"""••''•"' "'ivo,! slightly

Crdiit-fliix

11 .

(lorsiid. ICiKlitli sicriiilc with tt-.c ciiikIiiI margin hroadly coiicavc. llic lateral
audit's hcariiiK small tufts of hairs.

The female is similar Imt of a less heavy huilil; the alxiominal termites
iiave the same orange-yellow stripes on either side of the hroad median area,
these most eonspiciions on senment.. three to five where they ai)pear as l>ri)jht
triangles.

iiOcality: Holotype. ,'. Bernard harhour, Northwest Territoiies. .Inly 1-14,
1<.»U) (F. .lohanseiij." No. 42."). Allotopotvpe. ;. .lulv. .\iisnst, 1!H.'). No. S2:{.
Paratopotypes, five o', }, Nos. 41!», 4-2!t,'.lnly 1-14,' l!tl(i; Nos. .S21, S2.">, and
S27, .luly-Au(just. VMr).

This intcrcstinti .\ri'tie .\( iihriitniiKi helonns to the s;ime uroup as the
J'ala'arctic .\ . prdliitsls (I.iiinu'ns) and .V. *(iu" ( Hiedil) and the \ . ixniiinhni
Alexander from the liijjh mountains of Northeastern North .America. I have
seen specimetis of a species of this same firoup from (Ireenland that are close
to priitnisi.f hut seem to represent a new species.

( ienus Tipula Linna-us.

Tiimlii I.imuiMis: Syslciim Niitiirii', edition II). p. 'tS'y; 1".")S.

The present collection included seven species of this fjenus. the oidy des-
cribed one oeiii(i the common and api)arently widely distrihutecl Tijiuht (irvtini
Curtis. I expected that 7'. jiratoruin ICirhy' woidd lie found 'imoiiKst the
material hut such was not the case, there lieinn no species having the antennal
scape yellow. The only species in this collection with any yellow on the antenna'
is T. lUllaca which does not afiree at all with Kirhy's rather imsatisfactory
description.

Tipula johanseni, n. sp.

Aiitemue hlack: head (irey, along the inner margin of the eye hroadly jjaler;
thorac' dorsum with four dark lirown stripes; wings with the tip of vein
li-: pale, suhatrophied: crossvein //( obliterated hy atrophy.

Mai.k. —Length, IIS mm.: wing. 12-4 mm.

Palpi black. Frontal prolongation of the head dark grey, the iiasus short,
blunt. Antenna' (PI. II. tig. I,")) black; first segment of the scape relatively
short, not as long as the first flagellar seg-nent; tlagell;ir segments rather elon-
gated, the basal swelling oval, shorter than the remainder of the segment.
Head dull grey, paler along the inner margin of the eye; sides of the vertex
with scattered long, coarse bristles.

Thoracic dorsum dull grey with four dark brown stripes, the median pair
narrow, separated from one another by a broad stripe of the ground colour.
Pleura dark grey, the dorso-pleural membranes dull yellowish. H;ilteres r.ather
long, brown, the knobs still darker brown. Legs with the coxa' dull grey and
jirovided with long pal" hairs; trochantei's black; remainder of the legs broken.
Wings light grey, the costal and sub<'ostal cells a lilile more yellowish; stigma
brown; an iiidistiiu't dark cloud at the tip of lis: veins dark brow- venation
(PI. I, fig 11) tip of vein A'-., pale, subatrophied; crossvein in (■' .ited or

nearly so.

-Vbdoininal segments blackish, the caudal and lateral marg.ii, broadly
paler; hypopygium yellow. Male hypopygium with the ninth lergite (PI. Ill,
fig. 32) not prominent, the sides obli(|Ue, the cainlal niurgin very deeply split
by a \'-shaped median notch that extends almost to the eighth tergite, the
lobes thus formed long, suliavUte. Ninth pleiirile extensive, subtriangiilar,
the caudal angle extended out into a short blunt poiiu; outer jileural appendage
not ijrominent, cylindrical to slightly flattened, with long golden hairs; inner
pK uriil appendage greatly compres.sed. Ninth sternite profoundly incised be-

' lamia Horiali-AiniTicana, Insccla. |). ;ilO; ls:{7.

('(•iioilitin Arciir Expedilion, l!)l,i-IS

12 r

no-ith l.v !i V-sha|HMl notcli, l.cni-ath the inarKi-i of the ciijhth stcrnite a small

brush of loiin noldcii hairs. KiKhtli stcrnitc unarimMl. ^ ^ . . ,.,.,,

Locality- HoU.type, c?,B«-rnara harl.ou-, N..rthwest Terrifori.-s, July 10,

l')l(i(F .loiiaiiscn). No. 2 Hi. . , ■ i\ e

' Shnilar to T. a,„'rta AU-xandcr {imperfecta AU'xaiulcr, pn-.HTUpird) of
Lal.ra.lor in the op.-., <rll >V.s/ .U,, l.ut .listinct in tin- -lark frontal prolongation
of th.- h.-a.l. the unifonnly dark antenna-, the blackish trochanters and abdomen
etc. In a,„rta the tip of Ih P<Tsists for its entire len^tn an.l the petiole of cell
U, is verv much lonjjer than in the present species.

This interesting sp.-cies is .ledicated to the collector. Mr. K .b.uansen.

Tipula diflava, n. s|).

Ceueral colouration grey; antenme black, the -ecoud segment abruptly
vollow; abdominal t.Tgites orange with thn-e broad black stripes; wings cloule.
d h brown and grey; male hypopygium with the ninth t.-rg.te ''[gc ... cau ...1
margin deeply notched medially and with a small acute tooth at the base of th.
notch.

M.\i.K. Length, 14 flnm.; wing. Ill mm.
Fem\lk. -Length. 20-22 mm.; wing. i7-2 18-3 mm.

I'alpi black. Frontal prolongation of tliQ head black, the nasus elongate.
\ntenna" (I'l. II, tig. IG) with the first scapal segment narrow l)asallv .
e. rge distallv. 'black, yellowish at the apex; segment two yellow ; Hagel urn
bhick th.' flag<'ilar segments with the ba.sal swelling pronunent with about four
con-T)icuous l)ristles. Head black, dark grey pniinose.

Thorax grc-v, the mesonotal praescutum with thn>e broa.l 'fkergrey stnpes^
the mid Me one "split bv a lin.. ..f the grouml-colour; hairs .m th.- thoracic mter-
saJes hrt, pal.!, n<.t conspicuous. Halter.-s y.-ll..ws the knobs .lark bn.wn,th..
ani.-es • lit 1- br ghter. L.-frs with the c.xu- .lark grey: tn.chan .-rs brown,
^!^ .:;. l,/:ilnish ^-llow bro^uUy tippe.l with black; tibi^ aiul t;--lark brown.
\Ving< subhvalin-, cloud.-.i with brown an.l gr.-y; cells C an.l >S< >'■'"«'-'
igma .larkbr.,wn; a dark brown sp..t at the or gin of ^^^^T^^^^^^^
sector' au.-x of th.- wing brownish grey, interrupte.l by c.-l U^whi.' is u"iriy
n-iuno; 'c.mspi.-:i.,us. lfrowni<h grey .-h.u.ls along v.Mn (», in ^r^^^T^-
of cell M an.l including most of cell Oh; apic.-s of the ana 7!'^ j" ^^''^ «[^>^
in the male the pattern is the sam<- but paler; venation (II. I, hg. .)), pattern

"""'AlKUmien with the first t.-rgite black; se.-.m.l to sixth ^^J^^];-^,
broad bla.-k strip,-s, a narrow m.-.lian one broad.-mng out be. nd and t^ su
biter il strines- on th.- caudal margins the black striju-s .-nd .) be v.mtlu.nt
;;l;."I.;S ti... .Irang.-; t.-rminal s.-gm.-nts l-.ely bh.ckis^i; 1^^^ -;-^-
„f the t.-rg, e pale v.-Uowish; hypoi)ygium mostly blackish st.-rnit s urg. i>
b al-L Mai.. InpopVgium (PI. Ill, fig. M) wi. ,he "'"th U-rgi e ,1 . II, hg 3^
ext.-nsiv.- th.- -audal margin with a v.-ry .l.-ep N -shaiu-.l notch, at the bast ot
wl .'h is a tinv t ..th that ^.-n.ls a carina .-ephalad .nito the dorsum of the s.-l.-rite
at T 11. bei t^iin, r.„in.le.l at th.-ir api.-.-s^ Ninth pl.-unU- -;"'» r^-;'";;'^^ ^^^
large- outer pleural apjM-n.lag. elongate, Hattene.l-.-yhn.lrical, pale with a .kns
c„v.-nng ..f l.Ing hairs! inn.-r pleural appen.lage flattened int., an extensive bla.h-,

''"' "nli^feinill; ?i!i^nihrtt larger; valv.-s of the ..vip..sit..r slen.ler, elongate
acicu r, n.;t'i':irhke'th.- ..-..L ^pe where the terg.1l val..s are Hattened
transvei's.-ly with the outer margin toothed and th-- sternnl xah..s .irc ^cr^

""'"■^Vahtv: Holotype, c, Bernar.! harbour ^^^^t;^'^^'^^
1910 (F. Joiiansen). No. 790. AUotyp.-, 9 H.-rsch.-l island \ukon Icrntorj,
Jiilv 1910. No. 838. Paratype, 9, withthealh.type. .No. 8.J.».

Crane-flirH
Tipula arctica Curtis.

13 c

Tipuln arcHta Ciirtin; Diwription of the iiisirts hroiinlil hdinc hy ('"HimiiitKlcr .1. Cljirk
RoitH. Appendix to Hoh.m'h \iiyiigc to the Arrlic rcKioii^, p. Ixxvii, I'liitt; A, tin. l.'>; ls:il.

Malk. - Lcnuth, i;} I" mm.; wing. 13-. VI To mm.

Fkmai,k.— Li'iiKtli, 20 21,')mm.; wiiiK, 10 17 mm.

Pall)i (lark iirown. Frontal i)r()l()n({ati(in of the licatl rather clonftatc,
l>lu<"-Krcy: nasiis stout. .\ntt'nna> (PI. II. fig. 17) drcpiy serrate, each senment
of tlie flanelhim (ieei)ly iiieised i)eneatli. tiie ai)ical eniarKt-metit lieinjf only a Httie
smaller than the liasal swelling hut not iirovided with verticils. Head lilue-
groy.

Mesonotal prai-scutinn dull grey with three liroad hlue-groy .stripes, the
median one often narrowly split liy a vitta of the gr-itind-colour;' these strij)es
are .sometimes narrowly margined with hrown; the thoracic iiitersi)aces with
nimierous black setigerous i)uiictures: reniainder of the thorax lilue-grey includ-
ing the coxa- of the legs. Halteres hrown. the knohs darky;. Legs with the
fernora reddish yellow hroadly tip])ed with dark hrown; mrsi dark hrown.
Wings suhhyaline WMth conspicuous hrown and grey markings, cells (' and Sc
a little more yellowish : a small hrown s|)ot at the origin of^.v; stigma large,
sending ti cloud down the cord to cell first .1/,; greyish hrown clouds in the anal
cells, at the hase of cell Cu, at midlength jind at the end of A/and in the tipex
of the wings; venation (PI. I, fig. 10).

Ahdominal tergites in the mtile with .segment one, l)lack; two to four, reddish
yellow with tmmd suhlateral stripes and an indistinct me<lian stripe hrownish
grey; remaining segments dark hrownish grey; sternites two to four, reddish
yellow, hroadly darkened liiterally; terminal sternites hrownish gr<'y; the
segments of the ahdomen are very ntirrowly and indistinctlv margined with paler.
Male hypopygium with the ninth tergite (PI. Ill, fig. .S.-j) "small with a deep and
l)roa(l round(>d caudal notch, the dorsiun rounded into a sauctr, the hiteral
lohes with four or five hlunt teeth. The inner pleural apjK-ndage is illustrated
(Plate III, fig. 37).

The female is similar to the male in most respects, hut the ahdomen is
differently coloured heingduU grey with a hroad, dark hrown, interrupted, dorscj-
median stripe; the hasal tergites a little hrightered on either side of the (h)rso-
median Hue; iihdomen not excessively ehmgated as in the related T. loni/i-
rentriK: dorsal shiehl jet-hlack, shiny;" tergal valves of the ovipo.-itor hrownish
hlack. The ovipositor (PI. Ill, fig. 48) has the dorsal shiehl elongate, a little
longer tlian the tergal valves of the ovipositor; these tergal valves have ahout
fifteen teeth along the outer lateral margin; the sternal valves are very reduced
as in this group of .species, acicular, the pair forming a suhlvriform orgaii (PI. Ill
fig. 40).

This was the most ahundantly represented species in the collection including
nearly one-half of the material, as follows: -

Localities: West of Konganevik, Camden hay, .Ala
Johan.sen). Four o^'s, Nos. 1!)G- 199. Port Kpwdrth, n
Coronation gulf, Arctic Canada, July Hi, 191.") (J. ,1. O'Xeill)
and 104; one 9, No. 103. Rernard harhour, Northwest
]91o, one o", No. 1328; Julv 4, 191,-), tme 9, No. 1076;

, July 4, 1914 (F.

ith of Tree river,

. Two 's, Nos. 102

Territories, Jime 21,

July 7, 1915, one o",

one 9, Nos. 1233, 1234; July 12, 191.5, two 9, Nos. 70(1, 789, one a\ No. ,o,-
July 19, 19io, d-, 9, Nos. 12()t), 12ti7; Julv 22, 191."), cf, 9, Nos. 10fi2, 1063;
July-August, 1915, .six d', 9, Nos. 829-834; Julv 1-14, 1916, seven <f, 9, Nos.
420, 421, 424, 426, 427, 428, and 430.

T'nless .st;,ted otherwise the materitd was taken V>v Mr. Johanscn. Pupa-
are pinned with Nos. 197, 199, and 834.

The immattire stages of this interesting crane-fly will he considered on
ptiges 18 and 19, under the second part of the report, on the immature stages.

14

''""'"'""' -irrtir Exi>nUti,>„, liil.i-IS

Tipula hewittl. n.

sp.

Mrip,.sVi:ul.,.;:^^''^i«'j^ ,--•'<••''• .>-■-■...„„. .1,1. ,1.,.,... ,.,„,,, ,,,.,,„

KK-yish ,.l„„,ls ,„a ,. lap pv« iu ,, i h V„ . T. ^■'■'■>'.""''^'i"<-'ly ,na.k..,l „i,h

-.liaiiy, .1... ia„.n.i Liii^'^os; nimiil;;;. i'""' ■'■""■ "■'■^' '""■'■"^^■'>- '""•••"••'

jV I ''.''•, '-'•"«"'. l-l Mini.; wii.K, I-, m,„ ■

«.vv; flaK..llu.n l-rok..;; ' 'ZJ ''irV Ih 'llTr;? "^ "«• -•■'I- .luM...! will.
<l<'«'ply split l.y a umVum Knx.v.. ' ' """ " "='' '""K'"' that is

;- -r ^ni:;r\:;";^;::';i3-;- ::;;;i ;::t :'='[f "^""" ■ '"<- -^ '•'•"<■

I'y a Kivy inclian vitta' loh... of ™t ,. .u .'•' '"*'"'''• ""'i'^t'"<-tlv split

the knohs ,lark l.rown tipp,.,! wi , . Ill vH mi I ^''^^'''\>' '"ownish y,.ll„u-,
K.n-y; trochanters .lark l-re wn I , , a uH , . TT' i'^*"*-'^ ^^•'"' ""• ••<'-^»'
fl>ui' un.l tarsi ,lark l,r„wn. \V i? urov H '" ^'T /"•"^'">' ''"'k '""«-':

'.u.r.^vollowish: stiKH.a l.rown; "v"Mowis^ '"',*"' '''"' ^^"'"•"•-t"l cHls

A",; .n.l.stinrt gn.y cloiuls ah^ng v ■ n o • Tl i' ' <''^^<'«'"" "' •''•ll -^econ,!
m.ssv,.„..-.,.oMi,.,,,,,,, «;-,,. ;-o^ of ,...11 ,/, ,,,„rt;

Ah.lonicn lark Kr.'vish t.Iiir.L- th.. i ■ i '^*'

tcTgite (PI. Ill, h>. 36 h i 4l)ou^^^^^^^^^^^^^^ I'yP'.pyKiun. with th.. ,i„t,

with a very narrow n-.ii f no "h ' ^'^ £, !^ ';=iu.lal n.ar^in n..arly transv..rs
at then- inner angle and almost t.'.nhT.^ ''""'' ''''Kh^'v ni<.(lii<.<>.l ..aiKlallv

outer pleural appen. ge > fZ llir:'^''\ ^'"T' pl-'urit,. e.,inpi ! ^

rounile.!. the hasal two-thirds .InVu; tf' ■ * '"."P',^'"-^'"'' »•'<' ap<.x ;,r oa.lly
with a .leep n.e.lmn not,.h " ' ''" ''""""' ''"'•'' >'"ll"wish. x'inth stemili.

191«'(F:than!inr^'i^;,°:i ,5""'-^ »>-'-"■- ^'>rthw..t Territories. Jnlv , ,4

Tipula subpolaris, n. sp.
MALE.-Length. 13-0 nun.; wing, i:j.,; ,„,„

seenipnt. Tli>;..i ., .T. ining ai.out tialf as long as th.' rest of the

quite different

;^i.^^?,SSi "SH9/-f- ; »-

.segment. Ti,,ial spurs long ami len.ie R , . '^

nidieationsof oranee on the siJo^/f »l .• ,. alxlominal tergites with

with the ninth ^rSt^'l^mV'^^^:^:''!';^^^ '/'-• -^'al" h.A,opygi, m
I -shaped not..h. Xin h n! • -itr" rn, ' ^ V''""*' """■«'" ^^''th ^^>rnnd

yellowish ; outer nienr I ,.^lt 'l„" i;''':''*'' ^^"'^' '"-oadly margin..d wi

^^-^rS»K';i;s,;;»S=Ei=--' — ' -i^' «-:

Crdnf-lliin

\:>

l.otulity: HcilKtypc, ", Hciiianl liarlxnir, Nni ill west Triiitoiio. .Iiilv-
AuKUxt lltl.') (F. .loliaiiHt'ii). No. H2ti.

This* siM'cicH is cciiailily close to T. hnrilti, hut I cannot make the two
ajjrcc. riifoitimatcly each species is icpicserited only \>y the iiiii(pie inale

type and 1 d t care to remove the alxlomeii to siilmiit the male genitalia to

the critical study that some day may he necessary. More material from the
Arctic north-west would prolmhly decide the status of these two species which
are closely allied hut which certaitdy appear to he distinct.

Tipuia besselsoides.

n. sp.

(leneral colouration (?rey: antenna- rather short, hlack: hudy clothed with
conspicuous erect hairs; femora lijjht yellowish, tipped with hlack; ninth teruite
of the male hypopynium with a small, I'-shaped notch, the Literal lohes rounded.

Mai.k. — Lenufh. 12 nun.: win(j, l-'i") mm.

Palpi hlack. Frontal prolongation of the head greyish hlack: nasus pro-
minent. Anteiuiie (I'l. 11, fi(£. !!•) hlack: first segment "of the scape lonn and
slender, dotlied with niunerous outspreading hairs: flagellar senments verv short,
the hasal swillinn of the individual sejjments heinjj ahout e(iual to the remainder
of the senmenl. Head hroad, eyes rather small, widely separated: vertical
luhercle low: head dark fjrey with scattered selijcerous punctures.

Thorax dark ^rey, the j)ra'scutum with three indistinct, ilarker jirey stripes;
thoracic inters|)aces with an ahundant coarse, hlack hair. Halleres dull
hrowuish yellow. Legs with the coxa' (jrey <'lothed with numerous lonji jiale
hairs as in hisst'lsi O.S.; trochanters dark: femora linht hrowuish yellow, the
tips hroadly hlack: tihia- li^hf hrowii, the tips '.madly hlack: tarsi dark hrown.
Winijs nearly hyaline, the suhcostal cell more yellowish: stifima hrown, oval;
apex of the wiiiKs a litth' darkened: veins dark hrown: (ihliterative streak i-xtend-
iua from hefore the stiKina into cell M^. venation: crossvein iti-cii not far hevond
the fork of M.

Ahdomen dark grey, the .seuments ccmspicuously ringed with pah' yellowish;
hihes of the hypopygium yellow. Male hypopyg'ium with the ninth tergite
(PI. Ill, fig. 39) iather extensive, the caudal margin ,M)mewhat roimded and
with a deep, I'-shaped. median notch; at the inner margin of the lateral lohes
a small tuhercle; entire sderite hlack, clothed with mnnerous shoit, appressed
hairs; suture hetween the tergite and steriiite well-defined. Ninth |)leurite
snudl, incomplete, the suture indicated only heneath; outer pleural ai)pen(lage
(PI. Ill, fig. 31) a small, suhoval flattened lohe nah" hrownish yellow, the outer
face with ahundant long pale hairs; inner pleural appendage (PI. Ill, fig. 42)
elongate, chitinizod, at the hase a roundc'd knoh clothed with long, ilelicate
pale hairs, the outer margin with four stout hristles. Penis-guard a long, straight
chitinized point, gradually narrowed from the ha.se to the acute apex.

Locality; Holotype, ^.^ Bernard harhour. Northwest Territories, ,lulv 1 14,
191() JF. Johanseji). No. 422. Paratopotype c\ No. 417.

This sp(>cies hears a strong sui)erfici,il resemhlance to T. /x.n.sv/n/ Osten-
Sacken in the grey colouration with conspicuous long, <'rect pile; the legs are
differently coloured and the hypopygium of th(> male is very difTerently con-
.structed in the two s|)(>cies. It also re.semhles .sVi/j/rrop/.v /i^/r/-// ( Kirhy) super-
ficially in colouration and the erect pile, hut the vcrticillate antenme and nearly
hyaline wings of the present species offer easy points for separation.

Tipula subarctica, n. sj).

Related to T. pribilofenni.'i Ale.xander; general colouration dark; ahdomen
reddish hrown with a dark median stripe on hoth the tergite.^ arid .^ternites;
ninth tergite of the mule hypopygium prominent with flattened, acute, lateral
arms; eighth sternite produced caudad into a hroad, flattened, shovel-like,
median loho.

iO ('

'"'""'""' -Arctic Kx/mtition, lUlJ-lfi

••ortimi to Ih' v.tv .lark nw l>l ,. ' . i ; """""' "••••'""••iih aiv almost
"..•'"•.ra.uw .lull y.-llow'' la tVr. s'' Inv n 'nur'k^ /"'."""^••i •'""'-> '^"

'lark l.roun. Wi„Ks .M.alv v^ ' •, ^J/ ''''^ "".' "'"'"V' ''la-k.-n,.-!; .a.li
.n.T..-.l just l...yo„.| tl... fork ..f M. Til: fl J Uv nS '"" '"-'" "''"''''""'

strip... >raK. hyp..py:;i;::';i;l;''!,r ;,-!;-. •;;';-;;p.H ..^..kisi. „..,.,!,„

and |)ronmicnt, Mack .•liitii.l»,wl ti. i V " • ' "'• "«■ ^U vcrv aruc

Hatt,. I cars. Xi„th p I'u t^^u' n ^ i^t . h.^!^ '"■"'■'"•;•"' ^"^ '•'''"''"' ^'^^'>

anito .l.,rs,,-,.audal arn. of ^, , /" ' '" "' '"V ""'"af.-.l henoath, an

IflU (K. J.i;„",'; ■ 'x;,°44^''"' "' '^""«-'",k, C,,,,,,!,,, I,,,,.. Al,,,',,, .J„lv 4,

.1... S,:'';;;rr,r;L,"s,;r ,;*:'■;!, 'iJir^;^-'" '^'"t"- "-■■"

species, LciiiK fulI-wi.iKf,l an.) ♦»,..,. ...Z •^'.»«'^'»- .I« "< an ontuolv disli.u't
although Loth spoH.!shav,h,/; ,''•''"*';>:«'"!" '1"'».'' 'I'fforenf ly constn,.-to,

Tipuin hnnchatknisis AU^xanluT "^ ' " '^'"•"■'"'»'<". «'astern Siheria

i.Ht.V:o.:mu:n'^' ii;^'';;e:™' ;r lie '• "t "i"*'"-^ ^•""■™- - -"-!*

f"ll..wmK a.l.iitional .•l.aractV.n;..,;;;! I ';,;;,Tr''''''-^''^ '^'^ paratypical an.l the
.Ur,/r; -L..nKtli, l»„„n.; winK, i:{mn..

iTownish Uack flaK(.ll u, &n. r ' '''"''•'; ''"''' ''"'"•" *''"» ^he .lark

^cna- prominer.t. ' "^ "' "" ^'"rtex. Eyes small;

Panityp.., ., KlS.ri^^aJkl'Jr'; ^^^ "^^in^ilir "'^'^ ^"""^^■
>pecim..n in th,. .■,,l!,.ction of Prof! Hine. "

I'ainily RHYPHID.f).

Siil.fiiiiiily TRICIIOCERrN*.

(ienus Trichocera M.-iRpn.

rn,ho,:n, M,.,K„„; i|,i^,,rv .Ma^r,..zin,.. vol. 2, „. 2«2; 1,S(«.

.1.... ;^i: '^:rtwe:;;^!t^';;:th;!tf ;::S:^^''''"•'f "-""-''•• *-—•

VTry manvofthes,.Mre ^vr," .rsnf Ti . ' ''^'''- '"'''" P^P""^'"''. •"■» that

Journal of „,o X-^w V„vk K„,o,„„lo«i,.al Soncy, vol. 2«, p. 72: HMH.

Cniiit lliis

17 c

■1

Kuropnin ^.tud.m ti> <Tili.!ill.v r-lii.lv \\\v I'xistinK tvpci- and cnriipnr.' the aiillini-
tinitnl •alii'iirci ,. ^p.ci. - with a urtat f-.ri.s fn.iii Aiiiirica ami ilMwhcrr. If
this IS .1..I,.' It may hi lat thr corn-i't synniiyinv can \»- (Irtcrinin.il. It is
scarri'ly p.)ssil)lf f..r an AiinTiran w.irkcr t«> atti'mjU th.' pr..hlcin, at h'a^t iiii.hr
prcsnit Kiiropran r<,ii«litl<.ii-. chiftly hccausc ..f tlir iinp..ssihility ..f stii.lviiiK
the types of Ihi- Kiin.pi'aM sp.ch's Mill rxistaiit ami the a<hh'<l didiriilty .if ..htain-
init aiith.nti.ally nani.'.l sp.'ciimns of the Kumpcan sp^•.•i.•^., th.' Kiinip.'an
siM'cialisIs, iipparciitly, li.'iiiK as nmrh in ihniht ciimtriiitiK (hi- true >tatus Hf
till' ."r.iiip as arc the Anicri.'an w.irkcrs.

I'ntil a v.Ty rcccnl date the kciui- Trirliun in. t.iitcth.T with the ri'late.l
jteiitis /m7/ /(,)/// ;/.r MiK.it, fr.iin Cape Horn, was im'lmle.l as a iminher of the

^ A eriti.'al stii.ly of the iinmatiire stall's by .lohaiin-
' iih, and .it hers has shown th.' <iUit iinpossihility
It seems liett.T t,i (jiv.' it slihl nily rank in the

Tipnii.l trilie. Liinnophilini
sen. Keilin. de Meij.'r.'. '.
of such 'in assignment ami
ftuiiily HhyphidiP.

Trlchocera sp.

'I he present collecti.m include.l three specimi'ns of Tiirhmrra sp. from
Hemanl harhour, Northwest Territ..ri.-s, June IS, KU.J, collecte.l l.v V. .lohanseir
two males, Nos. |;{()1 and \MY2 an.l a female, N.i. 1;{(K) 1). " '

lMM.\Tt UK St.\(!K.S.

The present collection of Canadian .\rctic crane-Hies include.l a surprising
amount of life-history material. This was .if verv great interest since our kiiowl-
edne of the yountter .stafc, s of any Arc, ic crane-flies is almost nenlinihle. I'nfor-
tunately, very little of the material ha.l lieen reared an.l conse(|uently the
p'acinjj of the speci.'s has been attended «ith consi.leratih' .l..iiht and difficulty.
Ai' a rule it scarcely pays to describe or figure undetermine.l larva' .ir pupa-
unless they show conspicuous jxiints of difference in <heir .structure, have a
peculiar habitat, or else, as in the present c.ise, come froai a region wher.' prac-
tically nothing is kn.iwn coni'erninK the early stages. Th. <e Arctic cmne-Hies,
esi)ecially of the Tii)uline (iroup, are s.mietimes as beautifullv i)atterni'd in the
larva as they are .lull an.l obscup^ in the adult. The biological .lata that were
supplied by the ollector are inc.irix.rated with each spech-s c.inc.Tii.'.l.

IIKXATOMISI.

In another paper, not yet iiublished, I have endeavoured to c.irrelate the
present classificati.m of crane-Hies, based entirelv on a stu.lv .if th.' a.lult Hi.'s,
with a critical survey of all the immature .stag.'s that I cou'lil obtain. AiminR
other things this stu.ly s.'cms t.i indicate that the tribe Hexat.iinini is n.it as
clearly s.-t .jff from the related gr.i\ips as a stu.ly .if the a.lults al.)iie w.iul.I
inijjly. S.'veral of th.' groups that have hilhert.) been c.insidered subordinate
groups of the g.'iius Liiiinophilo. such as rioiiiitrpliii . I.nsioiniistix, Dicranoiihraij-
711(1, I'oiciloslold. etc., all .seem now to be more pr.ip.'rly refiTable t.i the Hexato-
inini, or at least closely allie.l to Erinciru. I'tnlhopteif, vie. The iiresent species
has not been reared and its true affinities must be h'ft in .loubt, liut I believe
that the reference given behiw will be not entirely errone.ius.

Poeciiostola supposition.

This is a small group of Hies including sev.^n .ir eight species of the i'altp-
arctic region with ret>resentatives occurring in Japan. Although no adults .)f
this L'roup of flics or. imlccd, any of it- rel:itivt-s ]:a\-v vct been taken ir, the
Canadian Arctic I feel very little hesitation in referring the present larva to the
neighbo\irhood ..'f this genus. Ii may l)elong to the subgenus Phi/liiiorea Bigi't
of the genus UmmphiUi Macquart.

\i.l. iii— 46963— 2

''"'""'"'" -^'ilK- h:.riH,hln,„. mi. LIS

I'lifiit ..t'K...I^: I .t 1 • f llllll.

i.-.::[::;;^tl-;li;t'''''"'*''^"'- •••

•nsn.rr..w..r. .l...alMl.„niMMls.,„„„,,„

«•' xn^ll. uill, lour IoIm.,. tin !• tVr I , ;^''":'""l''"- 'li>l< li'l. IV. fi^

'■;^«- «..i. a .1...... friMK:'.:/;.; i' , '.' ' :, ;:;:iff ;■■ '7'"^ ''-"r '"-iv. «!..■ i.uN.

A (■..loiil.ral.lr rinriilprr

Tin I.I SI

Til

::f-— • .only "7 .;:::.:v, :!;;;;;; •:;'!;;,:;■•■•••■ '"••'-'"'' *•. .!..■ ........

Tipula arctica < uriis.

^^ay'2^l;Hii^';^Ii::i.r"""' "• '""••""•"' '"'^'""'■' ^'•■"-

^^^ A^nml.. .•oll....t..,| a;-ui;;va o., A,av 27 ,.upa,...| ahou, ,I„„.. ,,..

J;Ain.K. LniKtli, 2;< 2o „,m.

t 'l'<'rrit(»ri('s.
"IcariiiK

<liainct..r, alxuit » im,,.

»-r.» t.,.. .i;:^,.,,, ,r;i;„ i;;::»;i;;,;;,.!r;;--- ™, 'i^, «;;;...• ,.,ik

fijf. .W)

.iiiallcr tofth on

•tl)r((ual frcth arc

.. ,1 ■■■• ■ ■•it'i.u iiiaimn aiKi tw

-t.Tior v..ntrari.risti.;'!; :!'-;,;;;S;!i'i;""' '•'""■^ "; ♦'"• """"•'" '*-■

it. L. ♦! .1 ' . '"' >< ('•T'lii'il troiii one allot ](■
"'• l<- that, tl... .hstal.n. Im^Iw,.,,, ,|,„„. „,„ "

V'l.""ratioiMlully,.|low,tl„.,horaci... ''

lark hairs that kIv a .larkcr appcar-iic, •7;';i:,V .'..'.V.':' ^"""".'••'■u. nny, aj.j.r,.ss,.,|

on th(

these
I'l- ''V a (hsfa,,,.,, fl|.,( i^

larger posterior l.risties-
usually a more deheaie liair
'■i«'seK„...,„s withahun.iant tinv
Sj.iracuiar ;hsk (I'l'Tv "fi,;'" r ."s!,r!" ""i ""V"''": ''"•' "^ ""' ''"'Iv:
pair, rather elosely ai)j)r(..xi,nafe,l in...Hall,
pair Ihe .ioisal ,,air are shorter th.n,
most sp,-,,,„e„s has a straight or shKh-
'"Ix's an- longer an<l more slender '

(l<

IV.

the lateral
(•iirv<'(
lu

short !ol)i

a (lors.al
I ventral

a (Inivu-later.-il pair an.

pair and the inner fare in

ventr..ll ."'"■"• ''.'"•• 'J"'"' lateral
ventral lobes air short and l.road

' rtiiit-llii t

n» .;

TIh' -jiirjitli-. iiri' vrry liirni- iiimI i'<Mi»|ii<'iiiiiiH. I>l: h i,. spi i irm ii- ilnn-

iiri' Iwi. Mack <lot» jii-l mImivi' <iiiIi Npirii Ic iiimI tun -iiiinw Iml Miiiil.ir il-tl-.
ImIiiw tlir spirmli'^ anil mi ihi' viiilral Inl.c-: t.f llii>r iiiaikjntf« ilir vniiral
• lull ar<' the iim-t coiisiaiil. Anal (tilU four In ininiKir. Muni. (Ii^hy,

I'l I'.K. Male: I.tii(tlli, |H '.':( nilh. : ilui-i>-\ iiilial .li|(lli. :< H I nilii; ilcMr...
-iniHtra! wiillli. A 2 mm. rrmai.': I..iiittli. J.i mm.: «l.|iili ami wi.jili \ n-m.

.\Iai.k. (I'I. \', (iif. .")0i: Ciilduraliiin lirnwii. ilu' alMlnmrti luor. vill.uvl^h
lirown; the |ilrural miinliranr pahr: th.. hnalhiiiK-lii.rii*. a|>|M n.l.iur*. ami
.■.jualli' ilark liriiwn; «tiin(« un the .ilHlnmcii lil.iik.

.Xntrnnai l.a^'s ritual. il on a IiIkIi ir.-l, il.valiij ;ilMi\r thf Icvil of tlir
ltr<'!itlMn(t-liorn?<. I'ronol.al lirralliiim liorn> -lol ron-piniou-. -Iioit. <lir<clci|
^liiflitlv for\viir<h an<l slj^lnjy .Iiv.tk.'uI. On tlif proiioluni a >niall kiiol.
ju«l Lrtori' till' liri'alliinK horn-; on ihr praMiituni two uidi l\ -.p.irair.l iuIm i.-li'-
anil ju>f Ix'liinil these lail iieirer the me.liin line, two -mailer tiil>err|e-. the

.-pace I >et ween these tul'en li- i necle.l li\ a row of crenulal ion-. I.eu--||eathj.

reaehiiiK to I he iniilille of liie ihinl .ilMlotnuial -lament; \vinti--heatlir< reaching
the lia-e of the ■« nil aliilomiiial -cKUient.

.Mi.lominal tercite-: -i mnent- I ami 2 with a -mall lul>erel< the cauilal

riliK on either -iile of the meiliali line; -eumeiil H with two tulienle- on either
-iile, the inner one lai(£e-t : sennients ! to li with three or four tui.ercle- on either
siile, the iinier one lar«esl; -eminent 7 narroweil, with two lateral -pirn- ami two
sep/irateil Munt tui.ercle-; -e(jmenl S narroweil. the lateral .•niKle- emlinu in
liowerful tul»rc-le.- with sharp |>oinl-. I'leui.il inte)!ument eoar-elv punctureil,
on the eilue nearest the sternites with !i single sharp spine on the cail.lal riiii;
ol -e>i;inent I ami on segment 7 ami two, one on each rinjj of -eminent- _' toli.
Sternites arineil with circlets of powerful spine- on the camlai riin. on -etment
;{ there lieinjt l«<>, small ami wiih'ly separateil: on -element- 1 to 7 there are
four such spines, larger ami rather appn.vimateil. Setrrneiit <l roumleil.
imli-tinctly Mliil, each side with a small, acme spine at the tip.

I'KMAl.K, il'l. \, im. .'il) similar to the male al>ove ilescrilieil, the -exil.al

"''"<•'<■' -^ '"'iiiK I's follow-: Sheat'.s of the terual valves of I he ovipositor

elongate, powerful, lyiiut parallel to one another, tran-ver-eiy wrinkleil; -heaths
(it the -ternal valves of the ovipositor tiny, locateil at the apex of the eighth
se){inent.

Mr. .lohanseii has r ntly calliil my attintion to the ilescription ami

figures of the immature stajte- of this species h;, Dr. T. ( ', Nieiseli.' As there
are sot.ie discrepancies lietween the descriptions ul tiuures of the matcri.d
Irom northeast (ireei..: I and that from the ('.in;i ; ,n Northwest, it is pi.—ihle
tli.it more than one si.ecus is involved under 'lie name of Tiimlii lurl/nt.

Stytieropis, i.o-sii.ly paiTll (Kirl.yi.

Locality: .Melted ponds in the tundra at Demarcation hoinl, .\la-ka
May Mil » 1 1\ .lohaii.-en ).

Two smaller sptcimens ii.easure as follows: leii^rth, 20 to '_M mm.: diameler,
2-2 to 2 •") mm.

.V larjter larva (\o. "la), length. .'{S mm.; di.imeler. :{ 7 mm.

Form cylindrical, moder.ately elongated. Head-cipsule with the antenna'
long ;md slender, from three to four times as loiiK as t hick, cylindrical, villowish.

('luelotaxy: Seta' very weak and delicate, on the thoriicic segments I.einjr
tiny lateral hairs. Al.doinin.al termites i I'l. \', (in. .•.,Si with no seta' on the anterior
rinji: on the jMisterior riinj with the following bristles: a small lateral hristle
nearest the false suture: just hefore the .-a.udal tnarL'in of th.e sejrmen! a more '>r
less iniiH-essed line, at ils outer end with two or three bristles arising from
imhvidual punctures: on either side of the reddish dorso-rnedian vitta a pnmiinent

nn r,-'lr ,',!'""■':' ^'.'' ''';■ ■.■•••'""laik" I->p.Mlit ..n: M,..l,l..|,.|>..rnrn llr.ml^inil. v,,]^ xliii, ( ■,,p,.nliiwc'ii. I!M0

pp. .»( ■». n. vii. fiKs. I (. i- -.^

20 r

Ciiiiihliiin Airlic Hxitcililinii. l.'Ui-IS

riMK.s an . Iin..>t in ;il finmnit with tlic lateral l.ristlcs. Tlu" can.l'il l.risil,.s
thr.... n. nninlM.,-. aiv ,„ ali^r„,„,nf an-l rathrr wi.lolv s,.parat,.'l '

( olouralion alM.vr .lark brown, tlu- thorarir r.^Kion nu.rr r<..Mis||- ., l,r„.w|
.■..nsiMjuous . .,rs.,-m..,han s.rij,.. rr.i.lish brown: lower surf ^rT /vi 1 wi ,'
r...l.hsM.a.... Skm very s.nnoth without tuben^les or rou^henh ^). f V, I
sort. 1 he sutures betwe,.,. th,. in.livi.lual seKu.ents ar,. very well- ,nrke b 't
....t e..ns,„euously eonstrH^d, at ai,out two-thir.ls the len^.tll ,.( eael • M m n ,

>I>r.i.ul.r i.>k (II I\, h^r. „,) surroun<le,l bv six very lonir finL'er-like
lobes, of wiueh the ventral pair .are sliKh.ly the lon^.-r." .Ml tl... lol ,• ar,. n l'I e I
with .lark brown and her.. .leveL.p Ion.' frim:,.s ..f ,|,.|i,.. ' ., " •!'-«ine.l

l;.nK..s, at tl... tips of ,h,. I .s. m U..1 'si. r ene. t. w ; 1, n .';? H "'i''/'"'

.i..vn .1,.. ,ni.l.ll.. of ,h.. inn..r fa,... ..f ..a,.h lob.. th,.n!" h.^' ,,,",,! ^ J;^;;;

spira..i..s lar.,.. .Xnai «iiis short ..u;':^..n;;:^; it^i^in..:;;:: t;:;'i;r;:';;: ■[ ;-:;:
....p:.^:^(^:;^..:T';S:^;,!^:r'l;1a;l.:^

Tipuline \o. I (Stygeropis. su|.position).

torieJ;S;;:"2.''n;.!^7F:!;::h;i:'.';:f'' ""^'^ '^'■■•""^'' •-'■"- >^"'-^''-^» ''■••--

in tulX:.:'Sri;lirXo;'7,'"''' "•■■"="■••''<-" •"-"• ■'^■■-^■■^ un,.l„.,l pon.,s
I.,.nKth, 2()-.-, :.';{ nini.; ,liarn,.t,.r, IK 2 mm.

I'""., ,.ylin.lri,.al ni...l,.ra...ly ,.lonp,t...i:th,. ant..n.,r ..p.l abruptly tap,.rinir
til,. i),.st,"ri,.r eml ura.lually tajM.r iij; to th.. eau.la- ..lu.l.il l,.!,,.^ ,.. ..i i • i''

='""'y?;;";"/ ";;'■"••'-• ^'i-'-^ ti^.ir inii..r f.:..;:': p;::;!:; i'A .■' ; t,;: '■'"^"

lair .m lli..
th.' (I.irsal

i-rMles ..n tl... p,.,erior rin,; 'l.^ii^.-i in T^Z.^l^r^l^,. Z;,:\
SeT the;,r[;l''' ^''^^^^^^^^

. . rv. ..I , th. r. „Te t«o aht.nor sot;.' on ,a,l, ^i,i.., an.i el..s..r I., th..

Cnini-flici

21 (■

iiKMliiin liiic; of these the distal one is the longest, the proximal one usually very
short; there are lliree posterior set:e on either side, the two ))roxinial heinn
longest and in tlii'ir own ])nnetures, the third one distal in jiosilion, lying close to
the lilaek i)ieural stripe and located in a very small puncture on the margin of the
jidjoining larger |)uncture.

Colouration: Dorsum (i'l. V, fig. tiO) dull yellow. .lust inside the liroad
lateral strijx' and separateil from it l>y a narrow liriglit yellow line is a narrow
d'lrk hrown line, almost continuous hut slightly interrupted in i)laces: this dark
line hegilis on tiie mesothorax and coiiliinies to tiie last segment. The dorsum of
the alidomen lietweeii these dark stripes is handsonn'lx' inarkeil with dorsal
shields of hrown which are narrowly inargineil with darker hrown, the narrow
apex of the shield directed caudad; there are ahout scvcti of these dorsal shields,
the integument on either side of them with three bright yellow dots in straight
diverging lines, all of these dots lying on th<' cejihalic ring of the segment.
I'leiiral region dark hrown, very hroad hut paler on the thoracic segments,
gradually n.arrowed and hecoming darker toward the end of the liody, terminating
near the anal gills. This dark |)leur;d strii)e is dotted with numerous yellowisli
si)ots. N'eiitral surface ;ilirui)tly and conspicuously light yellow.

.^piracular disk surromuled hy six long, tiiiger-like lolies, the dorsal lohes
rather the shortest although still long and linger-like, lying parallel, the ventral
lohes longest; all the lohes narrowly margined with hiack and with a slender
black vitta bisecting the inner face of the lobe from the tij) inward toward the
disk, at the distal end ex])anded into a blackish apex; the ajH'X ;ind lateral
margins bear long fringes of hairs as in >7//(/( ro/z/.v, these hairs being longest,
toward the tii)s of the lobes. Anal gills six, short but rather slender, incon-
sjjicuous, the two lateral ])airs longest, the inner pair much shorter.

I would refer this to a jxisition not far removed from Stiiga-oiilK
although it is very dilTerently coloured from the species last described unch-r that
name. However, the structure of the larva' seems to indicate that it is more
probably a .S7 //(/(';•(>/)/. x than a TIpiilii or a Xtphroldinu. If the generic reference
is correct the l.arvu' ])robably belong to either N. jiiirrii or N. ixirriiiiih s.

In the si)ecimens from Demarcation ))oint, .Maska. the anterior end of the
body is j)ale and the median dorsal shields are continuous as a ])ractically un-
interrui)ted dorso-me(|ian line, oidy slightly constricted toward the ])osterior
end of each segment; the lateral dorsal strijies are v<'ry dark. However, the
structure of the spirai'ular disk and the cha'tot.-ixy are entirely the same and I feel
sure that all the m.aterial pertains to the saiiu' sjjccies.

In the vial coTitaining the two larva- from Mernard h;irbour, described aliove.
there was an atlditional Tipuline larva that is closest to the Ti|)uline No. :{
described hater, but probably represents a still ditTerent si)ecies. Mecause this is
the oidy specimen included in the material it is not further discussed in this
report.

Tipuline No. 2.

Locality: Three larva-, taken at Demarcation point, .M.iska, May, Hill.
No. 4 (F. .lohansen); mi-lff-d ponds in th(- tundr;i.

l/(-ngth, 20 2;i nun.; (lexlro-sinistral width, ;{■;{ ;{•() nun.; dorso-vi-ntral
dei)th, 2 2-2 mm.

15(»dy mod<-rat(-ly elongated, form strongly depress(-(l ; thoracic and first
aiidominal s(-gni(-nts with the margins regidar; abdominal segments l{ to S with
a prominc-nt false constriction or |)seudo-sulure at about two-thirds the length
of the ,segm(-nt, tin- edg(-s of tin- si-gnu-nts produc(-d lat(-r!ul to give a serrate
appi-araiua- to the nuirgins of tlu- abdoini-n; tlu- anterior ring of (-ach segmi-nt
lias thi- serration larger than that of the posterior ring .so that l\n>i.' alteiuale,
p(-miltimate segim-nt of the abdoim-n with the caudal angl(-s pro(luc(-d strongly
<'audad into long, sleinler lubes.

^' V„„a,li,i„ Arctic Ex,wilitii,n. IDl.S-ls

iiM.I J,.n,l,..- ;. ... , : r.'> ""\"K<'nt, lateral and ventral '- ">.>s lonj;

a>'<l tl„. last are a,no„jrst I ■ , ^H; mif v'""m' '="-^;', '»•'""««• This s,„.ei,.s
soen. The present sn.TJ.w U h ,s •' " I';it <Tne,l larva> that I have over

'nl....fTipnlida.a.u ' "in,'e ;,^"i "'^;^^ '''>^T' "f 'l"Pn.ssion for this
more aeeent le,! ecn.liti,, s i ' . rf i V "'^ ""l'<'ations „f how the even
"t'OMt. It se..n.s pr I a le .. t 1 u !'" .ei'"""";'' 'T'' '''"" '"''■" '•'-'«''
than toa.^vof th.^•elate,l^e OP. '"'"'' ^" ""' ^-"'""'^ 7''/'"'" '-.ther

Tipuline No. :}.

Loeality: Tun

larv^ two iar,e aSone si^X ^I'S:;..;'"^"^'' "•'" ' ^ ' •''"—■ Three

the wint,. hons.^ Cohinson point, :u.lka'i"; 1 ^^''IJ^/'.ln '''"''" '"■'""■'
Lcnfith. 2, o :iO mm.: diameter. 4 r, mm

'Ian. ap,m£;;d'!ia;;!';:;;::;:;;;;::^y^;';;:- .1;^^^^^^^ ^;- '><;•'>• ^i...i-i wi.i. an ah..n-

sette darkest in eoloul; ea/ seamen s id"^ K^'T ''^^"T "'"^ '"'"''^ ""■
sutures so th.. ahdonuM, appears ,1 oLHtVl -Th::''/' ''t ^'■""^^■•■'■^" f^'l^o
•""■'',■"•'■ '■™''''-^- '''•»<"'—"■'■ l>v .1 '.■ eLu. hli row of sett " """-^ "' "••"■^' "'«-

-^': .--in. p;:;^;n!;;d-r::;re::h-,r-r\;.^^^

('rani-flii s

23 c

destitute of piihesenee; eacli ol' the outer setiKemus areas t.ears two closely
appidxiinaled seta-. Lateral seta- two, one on eacli piiiiiarv linjj at alioiit iiiicl-
lentth. the anterior one Ivitifj closer to the ventral niarniii, the posterior one
closer t() the ilorsal niarnin. Sternites (PI. V, fin. ().-,) ^itli four setineroiis areas,
the iue<lian pair_a little anterior to the posterior pair, one on either side of the
median line, each area with two stout hristles. The above pertains to th(>
ahdoininal sejrnients. On the dorsiiin and lateral portions of the anterior riiin
ot the pnthorax at al.out iiiid-lennth there are about ten setijieroiis areas the
inediuii pair close together ami hearint; a single seta, the next pair more
WKlely separated, each with two short seta- the third pair closer to the

■'"'■'• ' P'l"' <'i:"' ''k'.v are lo one another, likewise with two seta-, one lonij

slender bristle and a shorter slender one: lateral seta' soli(arv. loiiK and stout
tw() on each side of the prothorax. Tlie mcso- and meta-'thoraces at about
midlendth and almost m ahirnnient have about ten setigerous punctures the
iniM-r six close lofTcther and shortest ilhe innermost simple, the outer two 'pairs
double); lateral bristles longer ami more widely separated.

Spiracular disk (PI. I\\ fig. 4!)) surrounded bv six short lobes, not con-
spicuous. Dorsal lobes short, conical, situated <'lose together on the dorso-
median line, divergent apically, broad at the bas(>, taiM-ring rapidly to the acute
tip. Lateral l<ibcs longest, eloiigat, --conical, tape-ring to the rather acute apex
\enlral lobes short, broad, and bluii, with a broad blackish blotch on tlu- inner
face, in the snialli-r spi-ciiiK-ii occurring as two oarallel transvc-rse lines beiu-.-ith
each spiracle. ( Jills short, blunt, dark in colour.

This i.s probably a species of Tiimln rather than the relat(-d genus, \,i,li-
roloma. but the immature stag(-s of the- 1 wo g(-nera are v(-ry similar to oiu- another.

i;.\l'l,.\.\ATl()\ Ol- I'LATK I.

I'iK. I. Winn

" :i.
" 4.

■S.

!t.
10.
11.

if Diiriiiiiiini/ld idiiariuii.ii.i. n. sp.

Eriiijilirn (Krio/jl, m ) niiiinxli jH-iiiiin. n. sp.

l.iiiiiKtphihi iDiiiii/loliihis) rhictiojilihHdi.i. n. sp. )

T'iniiiliiniii hirrifiirriilii. n. sp.

1 . Iri<iiiln. n. sp.

.\f IthrotDiuii iirrlirold, n. sp.

St/jf/iriijiix imrrii (Kirby).

.S'. iiiirn'niih.'!, n. sp.

Ti/iiilii ililtwa, n. sp. (iiatlcrn omitted).

7'. iiirtird Curtis.

T. johiinstni, n. sp.

i;-\l'b.\.\.\TI()N OF l'L.\TK 11.

KiK

V2.

u.
1 -,

.\Ilt('liri;

Iti.

IT

"

IS.

"

■JO.

■'1

llypiip\

■>■»
■'{

L'l.
2.")

..

I'll.

"

I (if Sli/f/i roinx imrrii; l):i.s;il ami apical segments.
N. jxirrididts: the sauic.
\( lihroloiiiii iirrHriilii: liasal segment -i.
Tjiiidii johatisnii: tlic satiic.
7'. iliOiirii: the same.
T. iirrliiii; tlic same.
7'. •iiiUiititiiris; tlic same.
T. hiwxihoiili x: the same.
KLum iif TrirjifihoHii friijiilii; plcuiMic aiel a|ipcii.laj;cs, .hirsal aspect,

7'. (//<)/)/i<(K(i (Diianc); : lie same.

Sliiijrrniiis inrriiti'lix; (inter pleural appernlafie.

.S'. imrrii: the .same.

N. imrrii: inner pleural appendajie.

.s'. jiiirriiiiili s: the same.

N. imrrii: ninth lernite, (hirsal aspect.

.s:, j„,,-rirti,U^: tlie -anif.

,0

^nBV^«^^^

24 c

Fin, 2H.

" 2i».

" .10.

" .11.

" :i2.

" ;«.

•' .'it.

" ;«).

Fig. .W.

" -.is.

" ;(!»,

" 40,

" 41.

•' 42.

" 43.

Canadian Arctic Expedition, tOIS-ts

i:\i'i..\\.\Ti(».N OK vLxn: m.

A . i„rtH-.>l„: ..ut..r pleural Hp,,..„,l,iK,.. ' '•

T. hf«>,cUni,l,'.i; tlic .siiiiic.

I, i.niinlti; the .suinc

Hyp.pyK,um »f r. arrt.V,,; i,,,,,.^ p,,,,,^,,, app,.n,i,.Ke.

7 . .uh,,oU,n„; „imh ,,.rKit.., ,l„rsal a-p,K-t.

Hy,.,pyK„.,„ of T. .„6„..„W,,. „in,h ..'.Ui. X'.r.sal apso,.,

Ovipositor of 7? aS'do;:;;::^;;,!;':"'^"' """-'''«'■•

\ R'

Fig.

44.

4r>.

4(i.
47.

48.
4!».

FXi'L.WATION OF PLATK IV.

Larviiof l'ac,U„U,ln, .supposition; spiraciilar .lislc

/ iimU, arclira; the .saiii...

'^'W'T"/"\ sii)>i,osition; th(. .sain,..
„ ^'./""."^- ><.'■■ -': <lorsal asp,.,., of ,.n,ir,. larv,
.. I'Pi'hne .No. 2; .spira,.ular .li.sk.

Iipi'li'ie No. ;{; tli,> same.

KXI'LANATION OF PLATE V.

II of Ti,ju!a antim; iiml,., Iat,.ral asp,.,.,
. ',•.'"■'■'"•"•■ '■'■I'l'il'-. dorsal asp,-,.,
a of lipula arrlica; labruin sal asp,.ct
. /, "'■f/"""-; m,.nfu,n • ,al asp,.rt.

; cat "';,,. ste-'"'-*-

''punne Ao. 1, thp samp, thin stcrni,,"- v<ni,r..l

l^:^ v°- ^: [{"= ^'""'■' 'l-f^'' '-«i'^ ''W"

/i/"rtine No. 2; the .samp, ,hr, stprnitp- vpntr.l
'/>w»,c No. J, the sam- , ,hir<i .sternite; ventral.

EXPLAX.\TIOX OF PLATK VL

Kigs. ., 2. Fp„.al.. of T,,ula arCua Curtis (Photon, by Geo. H. Wlkins)

ry().
51

I'uiw

rr/.

I<arv

,%.

.54.

5.5.

5<i.

"

.57.

"

;)H.

••

.59.

•<

fit).

•.

(il.

ti2.

(>;{.

"

t>4.

<i.5.

"

Cntiic-niix

25 r

Tl.ATK I.

II 10

Cniiu'-flie.s of th(? Canadian Arctic Expedition, l!tl.'{-l(i.

«H!

(<n„„li<,„ An-lic t:.r,„;lili,„i. Hn.t-is

I'l.ATK 11.

Y'

^/ ^

y

I !

12

'^

n

13

14 / /

15

//:

, r

'.*f^

18

19

16 ; J7

20

f?^^

21

/

22

23

\ /

..V

<

25

26 )

./■

27

|)i''iiii()M. iiii:i-i)).

' ^'r "--ilT!'^

( IdHI -llll n

I'l.vii; 111.

i

f V,-iMc-(lii-s iif llic ('■■iiiailiMn Arctic Kxiicilil ion. l>>l:i-lt>.

ViiUHi<»-"JIBLM'J>^JRK?

..■TM-VX -- U^. - — _ -it ■>«' .^r.

2Sr

Caiiailinn .{relic Expvdilion, lUt.i-IS

l'l.ATK I\.

44 \

M

■;a

''///,'
#

/

X

• •

/

45

X,

\ /

y-.

48

49

(•nm..-fli,..s of th.- ("aiiH.lia.i Arctic KxpiMluiun, 1!»1:{-

Itj.

Cniiic-tliiM

2!t (•

r..ATK V.

1

Criinc-tlics of (lie (';ina<li:in Aiclii' Kxjit'ilition. llllli-Ili.

:t<i,

' «■ 'i>h,n, .\,<t>, E.,,„,lil,„n. nn.t./s

I'l.MI \|

r./,.h .„,„.„ Cur,,- l'l,o,„un,,,|, l,v(; ||. w

lkin~

.iPiiT'w. Tm* r»^

^^S^^^^^RSRI^^^^^H

Thf Mosquitoes collected by theCanadiun Arctic Kxpedition,

191.M8.

( Diptcia, ('ulicidii'.)

'i\ II Mtiii'us ( ;. |)^ ,11.

I \ I iiiiiii < I >ii\.

Many -tcirir-^ an' riirnnt mIm.iM lli. ^lr■all|•(lill.•lrv al>UM<laiiri ,,f iii(i«i|iiilcii-
iii thf Arctic rcirioiiv rivallinu the tinpic-. in iIm- n-|.irt. 'I'liat tli.-r «iHiic.
arc nut nvcnlrawii, i- -Im.wh liy rlic acr..ni|>aii\ inu lili<>lnura|ili-, talicn in the
deltas of the ( nlvillc Mii.l Slave river* l.y Dr. j{. M. Amlcr-.m d ilic Caiiailian
Arciic I'Apcdition. .\cvcrilic|c><, the iiiiinKer .if species pn-eiil is small in the
iiorlliern rcKiiins, thminh iniiiviihiaN may he alaniilant. Alciii«llie Arctii -.M-t
of the Northwest Territories, here coli-iihre.l, |.-,tt two species are iilelitiliril.
ulii'ieas a collection of an eipial niimher of -pei'imi ns in the tropii- minht
incluilc thirty or fort >• species.

Ilc;iil 11(1. MS used Ml llii' .\erih fur pni- M(i-i|iiiler> iin h.nk ef nianV Ii.mhIciI cdai,

tcctinii iinaiii>t Mi(is<|iii -. Delia Near Niu.ilik. ili'ha ef Colville river.

of .-^lave Klver. Ci-eat .-^lavrlake. An-I ie .■(,a>t of Ala-ka .hilv :!

N.W .T . .tune. PKIs. pHI'.t

The eolleclion iiefore me was made diirinii the years I'.tl:?. lUI I, l!i|."). and
ll'lli; hut it is (iir-appointiiii;i\- a >mal! one i \:U specimens . ,i the material is
in \erv poor condition. Thi reirion. however, is inti're-tiny,. emhraciiin the
Arctic coast of Ahtska and the ('.■uiadi.-ui N<irlhuesl 'rerritoiies.

:<;.' (

Ciinwhin, .\rilir Hx/m,//!,,,,,. I'lli-IS

AW (Ochl«rotutURi netircticuii, n ,|,

!....« a.nl aliun.l ' n. ..I '^..^x "•''"' "'" *1"V'' "^ '-' '"^ -»-

l.r..,./vl,ruw,.,.,,i;... A .1 ,,„. ' r'*' r""-'* ' "''r"" • '"rv..,|, .lark

l..uar.| l,a.r. '"' ""'""^«"'- '""I »ir>t v.,,... ralh.r imni.roiH

i-i"> "".I last two /.in r.' \ , : ./::'''V:'''''i'-' ti,i..k,.„..,i; .,,„i .,f i,„^

tlx' tips p„i„f,,,| i„ „ |,i,„„ ,„„,. "■n'" narrow. ,|,itin,/..,| „„ the inarKins,
""• I'arp.-, hut s,nall..r. s-, "';,,.. "" f"^"""»f,» Pair of hooks sin.ila. to

.Frits johansnu/(t;a;iia!: T' K!;;:^i,^r*'i^r\ ];;-'••'--

•lata, No. \;m. A.v.,nlinKtoth.M.ot,H f ' . . 'i "'' '""' ""' ''••'""'
Pupic foun.l i„ a pon.l ( H. arinu .U \ , ' '•""•■'*<"•• »'"•«<• wn- hn.l from

.m6lfc:S^'^!i,y:\^l';:;-:n:s ^Ji;--- ''-'i»y. •-! .J...H. 2i-j..,v 1.

sp.c-i.s fro„. tlu. followini Ca i i s k ' ' 'i^Z "f m'' ■^\T'T'^' ''"■ ■^'"""'
a";l In on .strait, Northw-st T.'rrit.,ri. s 'j„ 4"^ h."'/'.-' 'i *''''"''"'''"' '*"''■'""
l»..nt. Xorthwrst Trrritorirs, .Jul IS I hi Mr , J'"''/,''''- ' ,""/' '' '^"""K
IVrntory, .July 2». iyi« (F J. 'o , , 1 ' • , ;,," *'' "•'^'*';'"'' '-^'""'1. Yukon

Sopte„.her 5,. 1^,^'^ ij' "^,;:;'tt- IJ^ ^ -^ ^^i'-, N;.r;hw..st 'iVrrin, ilL!
< ..llmson Point, Alaska, Jan.. 23, I!)14, (HrarhiK'" ) ' "''' '"''"""'' "*

Kon...s. Also ulli,.,I to « »n Z .ft . , t ' rom''l ">' ^ ""r"'"'^ "^ ^''" '"'H'a-

wh,ch .see Dyar an.l Knal!! Ins! In.^M,!,;, v",«7 S-"''' ^"'" " ''i'^''"-*"" "f
s..nrs.:::;-;;,,:^';i::\[;;;'':;l;;!,, -i;;-;;-' ■-;«; antenna. sn,all, uniforn, with
H..a.l hairs sinRl... a! Il .s £'l . ' ;'U ^\ 'll^ '•■;,r'"'''''^'''' "^ »'— ^t-rt'hairs.
the sp,.ci„„,,s; ant.-ant.nna t uf ^i^ Cr^ ' "V''":: '""[ "^'' '"-"l^'" *" all
nu.h,.a. thick an.l „„if„rn,. narr wi, J . h i, ',t ■' T^\ "" ^'^'" «'"''^""^'
tlH;r<. ,s a short dosing apparatus \ir h. '.''"' "^ ""' """''"■■ ^^'"'r-'

as long a,s th,. hu.sal width. tiiernK ou';' h .f ;'''"'r. V^" ''""' " ''='"' ^i"'"^
ahout 14, th.. sinslo tooth fiiw-K n,. . \ . 1 ' ',''*''" "^ " *" '<> ••■''tl'. "^uallv

ten to fourteen .scales in a pa ■ t . sinelc 1^^^ " ''"' "•'«'"'' ^"K"""' "f

I'as,., with long central th /rn n f.^;;:. ft/"'''"*''''*.'' 'V""'"' f'"'" "" "val

wnh a .lorsal plate reaching o a I'u h. m ,| t 7' , '^'""f"'- -^"''' ->-""""t

I'ulK.nK a little posteri,,rlv: har Var... ,r |. V ' ' "' T'*-"" ••^"'■" '"'»

-;a s,tuate.i posteriorly;- .h.rsai hi^^a c h!-;' .l:i,';'i:;::::£^.!?7^.r:!;r;.;;s
Terrho^Si-.nne';^;";;;';;; ;S;;^ irn^nr:'^ T?r^ /''^^'--' ^-"--^

inatniK numher.s. ,so that thev .1 uh I. I ."^'■' ' '"'^ f""''^ "^ '» <'<"n-

ncurdicm. ' 'l<»'l,tl...s>, |„.l„n^r to the ahuiiuant species,

Aedes, ii. »\t.
{OrhliiiUiitiiM.)

\ (vw larvii' nillccli'd with .|i.//.i niiiiiiiiiis Dyitr iit Hirii;iti| liMrlHiiir,
\4irtliw<'-«i Tt rriliirii'M. r('|>ri'«t'nt mii iippitrctitlv iiiiil<'<<rrili<'i| fnriii. Imt m^ iliirf
j- III) uiiy of iiisiM'iiitiiiK M!' ailult. :t iimiim' i- nut priipu-rcl.

Ili'iul liair» -ilinlr; iitJi'-imti'imal lull in two; anti'nna- limit, -IvihIit. a twu-
hairi'il tuft at tlic niiitilli'. Skin Klalitnii*. Latiral lunili uf tlic ciKlilli ^runirnt
(if fifli'rn •icali- in a narrow patrli; >ini{li' ?*i'ali' with Uiun Iirniinal ilinrn. Air
tuln' ahuul tlircc tiini'-* a-* Iiimk at wiilr, tapcrcil uti the (lUtcr half; pi rlrn narli-
iuK lii'Viinil thr iniilillf, thr last thrt'i' trrtli ili'larhcil: hi.ir lufl in fiiur. «iluali'i|
within the la^t titnth. Anal ■'•'kiih'IiI riiiKril l>\ I hi' piatr. thr l>ru^h pu^icriorlv
liirtTtcil; anal gills four, laprrr<l. rathrr «hiirt.

Aedes (Ochlerottitiis! sp.

A ilo/t'ti ffinairs friiin Srwanl pfnin-ul.i, Alaska, of an .l(V/i.< with ilark-
lirowii scah's hvit tin- inrsunntuin. thr pilr apparrntly lis« aliunilant than in
.1. nriirrtinis. \i> ailvantaBr wiiulil lir jjainril liv attri iptiiitt tn appl\ a nanir
In this fiirin. whii'li must await Ihr ii)llrrliiiii of inalrs or at Ira-I innri' prrfc('t
sprriinrns.

I.Dcalitv: Thrrr . .• . Trllrr, Alaska. .Iiily 2'.t, l!ll:i i l''rit~ .luhansrii i ; ninr v ?,
Nuinr. Alaska, .\imust ".M-'i"). ItUti i|"..).i. Caiiailian .\rrtir lAprditimi.

V.)i iii~4«ttt-»

^S^S^^^^^^^^^^^^

rsi

■wpCT

^m vtJkiift.^'

*< f , ^i . "i -

The DiotPra collected by the Canadian Expedition, 1913-1918.

(Excluding the Tii)ulida> and Culicida'.)

Hy J. J{. ^[ai.i.()( H.

I.NTKODrcnox.

occasionally with Muc-hlack s.xTics sn,.!, -w i)„ , i, «; ', '•'^''- '^'■''♦'^'''l

the Hies arc liairv or l.ristlv At , .^ t f "'■^''-""■■^. ^""l as a general ruh'

intt animal or vc^ct' 1 1 inatU r , t \'" "•"'" ''"' ^'•='.^-.''"^'">-s. living „n .lecav-

..,..!,^■^lt,;;^^;l;:?J;l;:1";^;-TS;;-.™-:;;;;;l«,^

SCIARID.1-.

also owini to thnr .icllHiV:""!,:;!,;!;;;:' '"■""^ '•',,rcs..ntc.l only hy females, an.l

Sciara, sp. i.

The first ve e Is'i U , , """j'-^ "'••'/ >"ay 1„ M.l,s,.,,„,.„tly ol.taine.l.
furcation -.f n.ed /t^l ,,! .r'i; ,, '.''''r'^, ■'■'"•'•'■» "';: '■'-•-vin an.l the

' ^' "" "" '' cncl<ises DcinR narrowed apieallv.

' Tiiiii.^ The tvpi-; ,,f !!;,

< iilli'i'tron of Iti>(.,.ts. ( (iiawn.

^jicriis (irsrril«-.i ,,[ liii^

isrc|.ortarc,l,.|M,sit,.,ii„,lu. Nation.il

i-*: ->si,-rT;;..:''

Diptera

;j.-) c

The radiiil vein is setose. ( 'osta extends almost to apex of ui)per folk of media.
■ Tiie posterior l>raiu'h of media runs nearly .straiKht from fork to wiiiK niarjiin.
Lenf^th, 3 mm.
Locality: Teller, Alaska, Augu.st ,i, 1913 ( F. .lohansen).

Sciara, sp. 2.

Two females in poor condition. These ditTer from the preceding species
in having the fir- ..in ending in costa slightly before furcation of media, the
latter origina'iiii n:\'.'.\viv iV-m cross-vein to hase of radius, and graduallv diverg-
ing from ant i ,or hran.h oi . i hitus, the cell hetween the anterior branch and
railius, and i ; rv(,.',ed fias.dl

Length, . -7 ' mm

Locality; '5. • mio har'iour. Dolphin and rnion -trait. Northwest Terri-
tories, .\ugust 2'2. lIH.j I i'. .Joliansen).

Sciara, sp. 3.

This species ditTer from the preceding one in having the first vein ending in
costa a little over midway from cross-vein to fork of media, the latter originating
one-third of the distan<'e from cross-vein to base of wing ami the third branch
of radius ending closer to apex of wing, nearly in vertical line with ai)ex of pos-
terior liranch of cubitus.

Length. 3 mm.

Locality: Xome, .\iaska, .\ugust 21, UtUi ( F. .lohansen i. ( »ni' female.

CniRONOMID.i;.

There are a nund)er of si)Ocimens, rei)resenting several .-pecies. in the collec-
tion, but their c(mdition is very bad .so that specific identification is not i)o.ssibh'
excei)t in a few cases. .V number of larva^ and pupa- in alcohol lend themselves
more reachiy to (hscription and to generic classification than do the imagines,
but so little is known of the immature stages of the many sjiecies occurring in
the Arctic regions thafitis impossible to give specific identifications for the
-pccimens in this collection.

T.\NYPIN.€.

Tiicre are two s])ecies of this subf.-unily in the collection, neither of which is
in \cry good condition. They ai)])arently represent distinct genera.

Tanypus Meigen.

There is one s])ecies of this genus in the collection, some specimens of which
:ire in sufficiently gofid condition to assure thiir identilicatinu.

'I'lie larva' of this genu- arc met with iji both swiftly flowing streams and in
-landing water, such as lakes .mikI pools, or even in water-barrels or other tem-
porary recej)tacles.

Tanypus alaskensis, ii. -p.

.NL\Li-:. Black. suboj)a(|Uc. Legs fuscous. Wings slightly greyi>h: cross-
M'in infuscated. i)Ut not broadly so. Halteres brown. Flumes of antenna'
and hairs of body and legs fuscous.

l'ail)i long. aiilei)enuliimate joint liistinctly longer than i)enulliinate. the
latter longer than ultimate. Dorsmn of tlmrax with nuuu'rous long hairs in the

Viil ii!--4ll!l(i:i 111

3() (•

Ciiiiiuliiiii Arrlir Kxiutlilinn. UH-i-IS

sliKlitly sunk lines l„.tw..,.u tl... aroMs usunllv ...•.■„pi...l l,v vift:r- in ,„|„.r .,,.■.•!,.■

i-<ii};tli, {( mm

Tanypus, sp. \,

• A pupa wliich may lie that of tin . ,,
similar to that of nuinills .Mcijjcu. It ditTc

pccifs i|csciil),.(l ill this p:,p(.r is vcrv
rs 111 havinj; the thoracic respiratory

..rm.s mon. eloiisat.. about 2-2;^ as h.n, as thick, pal^r our a „' .

a short apical roun.h..! projection. All the ah.lomii al segments 'ivo . k

are very hne an,l iiumher one or two on each st'tment near l,..s, Iw !t

segment has thre<. stronger hairs on each si.le .m It le ei'Ll. 1 c, f v" '' ''
stronger Hatten,.,l hairs; cau.lal fins p.,i„te.l a i v , i ' ..'''r'''

HattencI hairs on l.a^al half of oufr ma 'fjin an 1 ' s| ',;,,,, ',' ", '""

JIiviiiK ..a..h fin a sharply pointe.l app..aran.; *" I""t-'l"'-ance at ap..x,

Length. 7 mm.

Locality: Inlaml hike at B.^riiar.l harbour. Dolphin an.l rnion str.it
Northwest l<'mtones, .XiiKust Id. I!tl.-) (K. .lohanscMii.

^'""I "■'''"/'■'■^ specim..,. there is om' which evi.lentlv helonfis ,„ ,1„. o,,.,,;,..
.lescnheil as I'.vloUimjiuis sp. in this paper. '

Psilotanypus, sp.?

showm^VhroiiL"""""' "'"' ""■ """"•''• "'^'^'^""^^ "'' "'" -"I-'' i-iK..
Head without tubercles between bases of ...it. .,,.,.,. Ti

;.«,„.„„• „i„, „„„;,'„' ,;„',',,';[;:: ',:,:";,,,',, s;;?:'j";;;s"„';',,,'''-;'r'ri»'

»'- 'an. and 2 brpad. anteriorly interrupted lateral vitta'; s' , ^ , ,i

;; ;f ip;;';:«;,,,,;;;;r'i;:Sir n=? 's™;.„ -;r';:;i; ";;:;,i s

Ml'l-rcntly with a dark arei sir^l^din^'lho'";::."-":'"' ' ' ""'■""• '^ '"^^

1' ore tarsi similar to those of orn,l,ntnli,,, from mid.lle of basal ioinf

to ap<..v of tourth with ratlua- lonji hairs- mi( and hin.l i i . ''•'^•". J" "it

......l.rately Ion. han.; fourth tars:d joint im aiM.i" o ^ ' t ' i "' '^';:' ^:'"

«^:?•;S'■;t^;■b;:::h:;:^;••;;.r■di:^--l;^^

:iS-i;-v:^:;r- - ■-- "-i-^..-'t-:.^J'r"L!";i;i;t'oi.

LeiiKlh, 7 .") mm.

N..r,i™St;J:;;" Ei;V'f,.ST;?';;,„:;;;:::;;r' " '' > -■■ -

■li''r"*TiD

CHIRONOMIN.t,

37 c

Tlicif arc rcpii MiitMtivf> <if several Keii^ra of t his >iilit:imil.v in t lie lulleetioii,
soiii of them represented hy larval and pupal stages and some hy imagines.

Diamesa Meifren.

This genus is represented in the eollection tiy one sjieeies which does
not agree in structure with any species known to nic.

The larvu' of Dianiisd species arc generally found in fast running water
and normally on rock surfaces. I luive seen females that were coll.Mted while
in the act of ovipositing in water cause<l hy the melting of >now on mountains
in -Montana.

Diamesa arctica, n. sp.

I'k.m.si.k. Black, sulx.pacpie. Wings sul)fuscou>. veins thick and dark,
cross-vein infuscatecl. Maltere- hrown.

Kyes very widely M'liarated. width of frons e(|ual to one-half the wi<ltli
(if head: antenna' with S joints, the apical one mur times a> long as ])reapical,
surface hairs long and rather numerous. Fronotum with a ilee|). inoderalelv
wide central, wedge-shaped incision; dorsum of mesonotum anil scutellum
with rather long fuscous hairs. Ahdomen sto\it, with shaggy fuscous hairs.
Legs stouter than in Wnttlli Meigen, and with much mori' conspicuous hairs;
lore tarsi wiih the hasal joint very little more than one-half as h.ng as fore
til.ia; fourth tarsal joint on all legs sul)-e<pial to or very little shorter than fifth;
mid tarsi with a series of minute erect setulae on ventral surface of at least
t he liasal two joints. Venation similar to that of Wdlllii.

Length. 4") mm.

Tyjie locality: ( 'olville mountains, Wollaston iienin^ula. \ictoria island,
July 22. l!tl.') (I). .lenness). I'aratype. hike .Vngmaloklok, ('olville mountains,
Wolla.stun peninsula. Victoria Island, ,July 21», litl,') (D. .lenne-si.

Chironotnus.

} 1" ''\ ;•' :iiid i)ui);e of one s)ic<-ies and one imago of possilily another

>pecies ol ...., genus in collection.

C^hironomus, sp. 1.

A male in rather poor condition resemliles closely several species I have
dexrilied from I'rihilof islands. Il is entirely Mack and has the fore tarsi
long-h.iired. characters conunon to nearly all males of this genus 1 have seen
tiom the far iiurlh. Structur.ally the s])ecimen agree< very well with one
1 ha\e descrilu'd as coiifuniiis in a pajier now in iiress. liut more si)ecimens
are necessary to ensure an authentic identiti<'ation.

Length, 7 iin.

Locality: Ma ter i-land. .Vrdic coast of .\laska. .Inly 2, IHI4 ( I). Jeiuiessj.

Chironomus, sp. 2.

Lauv\. Bright red in life. Labium very similar to thai of Imtaiis
Kahricius. hul the median tooth is regularly roundeil and the small sulimedian
<ine larger than in that >i)ecies: the mandilile has three teeth in addition to the
large api<'al one. The ventral and resjiiratory filaments are alisent. the dorsal
liapiiia' are >mall, each wiili eigiit long liairs, and the four ajiical respiratory
protulierances between the caudal pseudopods are about three limes as long as
thick.

Length, 17 19 mm.

;w

(')uiiiiliiiii Arvtic KxiHilitiiiii. tifhi-IS

tr;

1 t PA. Miiiil;ir to that of /«/)M//.v. The sccoiul alMloiiiiiuil s.-jimi'iit lias a
aiisv.Tsc Imc ol miimtc chitinizcd spimilcs on pos , rior inaiKiii, and almcM
thf t'litiic dorsal siirtaco covored with small hrowii scalo-likc eleva-
tions, wliieh ai-e most .•onspiciioiis posterioilv; a ratiiei lonn iiair is prescMit
on each side of median hue posteriorly, and the elevation.- are alisent round tiie
t)!is.'s ot tiio.se as well as on a iiumher of small round areas on anterior 1

Halt ol (Use:

senmenls :{ t(. .) without transverse line posterioilv, hut in other irspeets a-
see' nd. though the elevations, or .seales. heeome pro^rcssivelv weaker to <lfth
segment and are present only near posterior inainin on >ixtli and seventh as two
small l,rown patches; ei-lith segment with .-ach postero-lat.'ral anijle arme.l
with a ehilmized proee s similar to that of ilrmnis Joliannseii.
I.eii^ttli, 1 t nun.

Locality: Pool at Collinson jioint, .Maska. .Iiine I'L'. IIHJ i F. .Johaii.seii ).
Chironomus, >]). ;i.

J..\uv.\. This species dilTers from the previous one onlv in l.einn smaller
11 mm, and in having a dark brownish vitta on dorsum of head, and the miI.-
mediali lahial tooth attached to niedi,-,n one so that it appears more like a pro-
tuberance irom the side ot 'he l.itter than a distinct tooth.

I.ocahty: JJrackisli pond. Hernar<l harbour, i^ilphin and Tnion strait
Aoitliwest lorritorn's, Ati^usl 1, !!>!.") (F. Johansi'ii)

Tanytarsus \an der Wulp.
There are several imaM:ines and .some larva' of this (-enus in the collection.

Tanytarsus,

^P-

Ai u '!1:!''" ,'" P'"?!- '•ondition resemble in most particulars viridirvnlnS

.\lallo( Ihe ll.ora.x is black, ab.h.men fuscous, tliounh probablv greenish in

hie ami lees pale tulvou. . The fore tarsi have no lonK hairs and the basal joint
IS about 1 •.) as lonu as second. The wint:> are not in -ood enoufrh conditi<,n to
Rive an accurate idea ot the venation.

I.ennth. .io mm.

Locality: Teller, .Maska. .Vufiusi :{, \\]\:\ i F. .lolKiiiseii i.

Tanytarsus, sji. _».

On.' mah' without fore tarsi. Lainer than foiesoinj;, j:ntirelv bla<-k.
mr udiiiK the legs, haltercs, ami aiiK-imal plumes. Winns with verv short
surta('e hairs; radius extenduiM; l" l'<-RinninK of aiiical curve of wiiu'; cro.ss-veiii
sliglitly before iiiiddle.

I.eiidth. 1-.') mm.

J.o.'ality: Lake Annmaloktok. Colville mountain.s. Wollaston peninsula
\ictoria island, July L'2, li'l.^) (I), .Jennessi.

Tanytarsus, sp. :{.

L.\Kv.\ ( )ranjje in life; alcoholic specimens, irreenish vellow, head brown
Hase ot antenna- pe-ltinculate; basal antennal joint about five times as lonu
as thick, second joint about one-fourth as lone as basd, third and fourth joints
pale, their comhim-d lei.Kth.v .; i ciual to ien^ih of second and ,ii.stinctiv i.'.ss than
hat of the lotiK p.air of filaments at apex of secoml joint, the filament 'at apex of
ba.sal joint not longer than second joint; mandibles stou*. with a rather strori
and not very sliari. apical to.,th, ami thr.'c small teetn alons; inner maruin'

J)il)t< Id

•M) c

lahiiiin with nine <listiiict tocth. all of uliicli arc nmiidcil at apices, tlic central
one iiiiitli broader tliaii the hist lateral and siinhtly shorter: siirlace of the head
with the usual hairs. Dorsum of each thoracic sennienf with four to six loni?
hairs; thoracic pseudopods stout, armed at apices with weak, pale hairs. Dorsal
apical pajjillu' very slinlitly elevated, each arinerl with six dark hrown li;iirs:
four sliort, stout, respiratory protuherances caudad of dorsal papilla- and between

anal pseudopods, the^lafter stout and short, the apic.ii arm.itrr in>i-tini£ of

rather stout pale thorns.

LeiiKth. S 0 nun.

Locality: 15r;ickisli i)ond at Hernard harl)our. Dolphin .Mnd liiion >trait,
Northwest Territories, ,Iune fi, HHti (K. ,loh;- ,seni.

Alonn with tins species is one of < htli<iclii(llii.-< sp. 2. Theie are no well-
ilefineil larval cases in the vial with the larva', and o;'ly one rn<le cylindrical
"runway" similar to those of r/)/f,;(;o«;;/.s species.

Tanytarsus. >p. ».

This species is much smaller than the preceding, lieinji ahout ."> li mm. in
length, ;ind forms a cylindrical case which is very little lotiner than the larva and
is entirely covered with tine particles of .sand. There are no lilameiit-like pro-
tuberaiu'cs on the cases before me such as are on cases of some members of this
(icnus found in streams in the more temi)e-.ate |)ortions of this continent.

Structurally the larva resembles the precediuK species. i>ut the labium is not
so straight on its anterior outline latera'l\-, being n\ore like that of Orthnrldiliiis
)iiri>n'iinihi.s Fitch, the central portion being almost transverse, with bro.-id,
poorly defined teeth, and the lateral jjortions .sloping backward, with sharp tei-tli.
'J"he antenna' are almost as in the preceding species.

Locality: liernard hiirbour. Dolphin and Union strait. Northwest Territories,
from bottom of big lake (20 feet), mid lie of February. ' Uti ( F. .lohanseiu.
Another vial with date Decendier. l!tl,'), station t'ic, contai a larg<' nundx'r of
these larva'.

Camptocladius Van der Wul]).

Four specimens in the collection appear to belong to this genus. They are
all males, but their condition is too po, r to <'nable me to make certain <>f even
llieii- generic status. They, however, have the habitus of Ciiniploclddins and
probal)ly belong hei'c.

Length. 2") mm.

Locality: Hernard harbour, Doljihin and Inion strait. Northwest Territrjries,
June hS. litl") (F. Johaiisen).

Orthocladius Van der Wul

P-

This genus is well represented in nortlii'm latitudes; the >pecies occur in the
United States very early in the year, March and April being the months in whicJi
they are most abuedant.

There is one imago of a species in this collection and the larva' of ;.,. which
may or mav not be the same .^ecies.

Orthocladius, sp. \.

A male in poor condition closelv resend)les ninirlnniliis Fitch, but the fore
tarsi have much longer haus, tlie basal fore tarsal lomt is slightly less than tliree-
fitths as long as fore tn ia, the wings are milky, and the cross-vein is obli()Ue.

Lengtli, t) mm.

Ijocality: Collinson point. .Maska. ,hme 22 2:?, 1914 i F. Joliansen).

40 (

((iiKiiliitii Arrtif Kxpclihiiii. 11)1, S-IS

T T;

riii,; iiuiy lie the >p(>i'ii's recorded as iiiililliiisis Zetteisledl . Iioiii ( ireeiiland,
l)y I.miillieck, l)Ut so many of the iiortlieili species ol' Oithocliiiliiis -.uhI Chlrntio-
niii.i have the same haliiliis and jieiieial ehaiaeters of colour iid hairing "f the
fore tarsi lliat it is not possible to say (h'fiiiitely whether Zetterstedt's sjiecies
occurs thi're or not without a careful comparison of a series of specimens of species
from I'lurope ami ( ireenland.

Orthocladius, sp. 2.

A species re|)resented hy a nuni!)er of specinicns to which I li.ive n'ven
tills name may ii". lielonjj to Oiihm Iniliiis in the restri<'te(i sense, hut is related
to that ftenus.

The colour of the larva in life is (jreenish or >-ellowish. In general form
the body resemhles that of ('itmjMchiilius, taperJTiK to the apex and lieiiiK witho\it.
dorsal pai)illa' anil permanently i)rotnidcd hlood-nills. The hca<l is small,
ta])ered anteriorly, ahout as lonj; as its ureatesj width, with very minute, un-
protruded antenna', and well (levelo])ed. distinctly toothed mandililcs. The
laliial plate is armed with ahout eifiht rou'ided teeth, the anterior four licing
in .'tn almost transverse line. Thoracic pseudopods very sniall. armed with a
few Mack h^iirs at a])ices. Anal pseudopods at extreme apex of la>t segment,
even smaller than the tlioracic i)air. armed with a few l)lack hairs and souk^
curved, thorns at a^iex. Body without surface hairs.

I.enfith, ;i- .") 4 ■.") mm.

Locality: Demarcation point, .\laska. May Hi, MIH, in mud of freshwater
ponds I I", .lohaiisen i.

Cenus incertus.

A larva and |)U|ia from the stomach of the (ireat Lake-trout {('n'Miromir
jHinKiifciish) helonn to a genus unknown 'o me. It is my ojjinion that the ncnus
helonns to Tanypiiue, hut so little is known of the immature stages of the alierrant
genera of ( 'hironomina' that I cannot he ahsohitely certain of the relationship
of the rather imperfect specimens liefore me.

L.\I{V.\. Testaceous: posterior margin of head, apices of mandililcs. and
lateral portions of laliium d;irk hrown.

Head with sparse loiiy;. erect ])ale hairs; antenna' either retracted or missing;
mandihles very long, i.pex terminating in .'i long, slender, sharj) tooth, inner
margin with three .videly spaced, short, truncated teeth: maxillary jialpus
short, not over I") a.- long a< thick: laliium without distinct teeth, minutely
irregularly serrateil anteriorly, its anterior outline produced anteriorly in centre;
hypopharynx with eight to ten sin:dl teeth on each side above lateral dark
areas of labium: ventral surfa<e of head with a narrow pale central strii)c. bor-
dered on each side with blackish brown. Anterior ])seudo])ods short and stout,
armed apically with many stitT hairs; body without noticeable hairs; an;d
pseudoi)0(l.s stout, with apical retractile claws; dorstd i)ai)illa' about three times
as long as thick, each with about six ajiical hairs; two apical respiratory jtro-
tuberances at base of pseudopods dorsally, their lengtli about three times their
width, ai)ices sharji.

Length, 15 mm.

I'li'A. Testaceous. Head mis.sing. Prothoracic respiratory organs not
elevated (jiossibly missingi; wings extending to middle of second abdominal
segment ; none of the tarsi exceeding ai)ices of wings, the fore and hind legs with
the tibia' and tarsi straight, the mid i)air with the tibia' and tarsi forming a
double curve. Incisions between abdomin.'d segments marked by a d:i' k lifown
line on dorsum and vi'uter; each segment except first and last with three long,
slightly flattened hairs on each side; penultimate segment with two large down-
wardly {)rojecting, posteriorly flattened, projections on ])osterior margin, which
are sejiarated by a distan<-e about e(pial to their own width; apical segment

;«,~taan^nr>i'2

■""TT

Difil

41

lliittciKMl (III ilur>\im. liitcnilly .-lii]>iinj vcntrml uiiil liiisail, Mniicd aloiit; t lie liii>;il
t\v(i-thir(l> til' its lateral iiiai'Kiii> with slcinlcr. >li(jlitly llMtlciicd hairs, ami with
Iciur loiin. Hat hairs on ai)ii'al thir<l, venter of apical sejjiiient with a iarue hitiil
])r(it\ll)eraii(e.

Length. Ki nun.

l.ocaiity : Lake at Mernard harhimr. Northwest Territories, .June "iti, l'.tl."i
( 1'. .lohansen).

In tiie vial with the s])eeiineiis is a lar(£e saek-sJKipeil eoed.iii or pocket
ot' a very toU(ih consistency which may helonn to this species. It is open at
one end and shai)ed somewhat like the cocoon of Slnriliiiiii except that it does
not taper so much at Ixittom. The surface is coated in part with small pieces
of rotten wood.

SIMILIID.E.

tnd

There are several lots of larva'. i)upa-. and imauiiies of this family in the
collection. The imagines, with few exceptions, are in very ])oor condition.

The larva and pupa of one species. ol)taiiied at Hernanl harbour, very closely
resemhle those of Sinniliiini vittnlinii Zetterstedt, hut as is shown in the ti'Xt
following it is s])ecificially distinct.

The larva- of this family are found only in running!: water, some species
preferring very swift streams with rocky lieds. and particularly those |)arts of
the streams where there are falls or declivitous rock-surfaces over which the
water moves at an accelerated speed. Olher species are found in streams with
only a moderate current, and since in these streams the lied is jjenerally more
or less muddy and gives an o|)portunity for a weedy or grassy (jrowth. the
larva' and cocoons are usually found attached to this growth or to roots or
fallen branches of trees in the stream.

The imagines are i>reilaceoiis. usually feeiling tijion the lilood of mammals,
and are a great pest in certain parts of North America and ICurope. As a general
rule the flies do not bite man. but they c:iuse great discomfort l^v Hying i)recipi-
tately against the face, and by getting into the hair. Their bite is more i>ainfu!
than that of a moscpiito.

There are imaginal representatives of two ge.iera and three si)ecies in the
collectiol..

Prosimulium Uoubaml.
The only species of this genus in the collection is ai)pareiilly undescribed.

Prosimulium borealis, n. sp.

Mai.k. Ulack. opacpie. Thorax and abdomen with yellowish white hair.
Wings clear. Halteres brown.

Head as in liirtipix Fries, the antenna' rather slender, postocular cilia dark.
Thorax with long, but not very dense, sub(U'pressed hairs, tho.se (yn posterior
margin and scutellum longer tjian those on disc; mesopleura with a few long
liairs near u])j)er margin. Fore tarsus with basal joint slender, not so thick
but I-.") as h)ng as ba.sal joint of mid tarsus: basal joint of hind tarsus almost
as thick as hind tibia, and nearly four times as long as second, not produced
at apex: second joint thickest a short distance before apex, three times as long
as its greatest diameter, and twice as long as third. Venation similar to that
■A pmiririn)! Hiiey. the r:idi:d V '.n with third l.>ranch thickened at aiiex but not
ilistinctly furcate.

Length. ;} mm.

Tyi)e locality: Wollaston jyeninsula. Victoria island, summer, IStlo (I).
Jenness).

12 c

('aaailifin Arvlic EfftctlHion. HH.I-IS

This species rescnihles pIrurnU- Miillocii in liaviiic tlie mesopicuni hairy
on llie siipiKT piirtioi). The tliinl l)riiiM'h of raiiius in nUuralf is very iiistin<'tly
furcate, which is not the ease in Imnolin.

A feinah' which is in rather poor con<lition appears to heloiiK to this specie*.
In colour it i* i<h>ntical with the male, hut it is not possiiiie from the condition
of the s])eciinen to say whether the inesopleural hairs are present or not. The
claws are hitid, as in /tliunilv, hut the tliinl l>ran<'ii of radius is as ' i the male
of hiirtnlix. 'I'he hasal joint of the hind tarsus is of e(pial thickness .h.rou^ihout
its length, its apex is not iiroduced on ])osterior side, ami its length e(|uals 'J-.')
the leiinth of second.

Locality: Hernanl harhour. Northwest Territories, .Vunust 2"), IKlti (F.
.lohanseiii.

Simuliutn T.atreille.

There ari' imagines of two species of this genus in the collection. It is not
jmssihle to definitely as.sociate the larval and i)upal material in the eoUeclion
with tiie adults ;is no s))ecinii'ns were reared. It is highl.\- iiroliahlc that the
l)Ul)a' 1 describe in the following pages lielulig to spe<-ie> represented in the adult
forms, hut there apjx'ar to he three distinct species in the former and only two
in till' latter. Unless the species which has sixtecn-branched respiratory organs
is that of I'rosiiinillNm liorcdlis, wliicii does not ap|)e;ir |)roi>ai>le from what T
know of the puiKC of that genus, there nuist he a tliird species tliat occurs
Hernard liarliour.

Simulium, sp. 1.

This species closely resembles iriiu.'^tum Say in colour, but is larger than tlie
a\crage for that sj)ecies, being nearly ;{ mm. in length. The specimen is in such
poor coTxlitiou that it is imjwssible to tell whether the scutum is marked or not.
The abdomen has the characteristic colouring of tiie iTniistum grouj). the i)asal
four segments being o|)a(pie black and the ai)ical five shining black dors.ally.
The legs are black, with the fore coxa', trochanters, bases of all femora ( narrowly I,
basal half of all tibia', basal two-thirds of hind metatarsus, and basal half of
second joint .>f hind tarsus jiale yellow. .Mid tarsi missing. Wings clear.
Ilalteres yellow.

It is impossible to say anything about the structure of the tarsal claws as
the only i)air that are left are stuck fast in the mounting medium, and are not
visible to the extent of showing if they are simi)le or not.

Locality: Hood river, Arctic sound. Xorthwe^t Territories. .Vugust 2S, l!tl."i
< H. M. And'erson),

Simulium similis, n. sp.

I-KMAi.K. Similar to incllrinn Malloch in gener.al coloration and in structure
of tarsal claws.

Black, subo))aque. covered with whitish pruinescence. .\utenna', palpi,
and proboscis entirely black; front and face with dense whitish i)ruinesconce,
the former very faintly shining: hairs of face ami frons whitish yellow, those on
vertex and ui)per ))art i)f occiput jiartly brown. Dorsum of thorax, when seen
from the front, with an indistinct, broad, whitish pruinose vitta on each side of
median line, when viewed from, behind wiMi the vitt;p less distinctly whitish
than the area behind each anterior lateral angle; pile of dorsum all hair-like,
rather short and depressed; no erect dark hairs distinguishable. Abdomen with
basal four segments ojiatjue: the .ipical five sei:;n'.ents vitv faisftly sliining;
surface hairs all yellowish. Legs black, basal two-thirds of fore til)ia> dorsally,
ba.sal third of mid ami hind tiliia\ basal third or basal joint of mid tar.si, basal
two-thirds of basal and bas.U third of second joint of hind tarsi yellowish. The
tarsal claws are .similar to those of urcticiiin .Malloch, but besides the differences

hijiti ra

i;t

ill lolnur fviilciit from the a'iov<' (li'x'riitlinii llicri' ;irr no Idii^ ircri dark liaii»
(111 tliorsicic (Inrsii.ii as in that spcrio.

Lt'!i)!tli, 2 :< mm.

'I'vpi' locality: Hooil livtT. Ari'tic soiiiid. Nortliwr-t '{"crritoric-, .\iinii>t "JH.
i',»i."i il{. M. AiuliTson). I'aratypcs, Iiathiir<t inlet. Xortliwf-t 'rcrritorii-,
Sci)t"ml>i'r I. I<.»l.") il{. .M. .Vndcrsoiii.

This six'rics is closclv rclatiMl to iircHciiiii .\Iallo(li, di'-crihid from Mriti-h
('nliiml>ia, liiit till' ])oiiits mi'iitioiu'd in the description should s(.r\e to separate
tlic specii'.s.

Simulium, sp. 2.

I'rp'.. This s|)ecies is similar tit jdliitinixini Hart in havinn the ihorai'ic
rcs|)irator\ oruaiis each foiir-iiranched (I'l. \T, fin. t). Ttiere is also a i'.iiro-
pean s|)( lie- with this characteristic, j'roni juliiiniiniiii ihe iireseiil specie-
differs in the armature of the aluloinen. The tliinl and I'ourth dorsal sejjinenl-
each have einht stout anteriorly diri'cted thorns near the posterior inarijin. in a
transverse series, four on each side, the space lietween each series of i lur aliout
three times as wide as the space hetveen the thorns of each series; dorsal seg-
ments five to ei({ht inclusiv<', each with a transverse series of weak. liackwardl>
directed si)ines near anterior margin, the series of fifth segment much shorter
than th.at on si.\th, thiise on other segments hecoininn proi^ressively ionner ami
stronger ;is they near apex; aj)ical si ;rinent with two short s])ines; fourth, fifth,
and sixth ventral sejjments e.ach with two short si)ines oti each side.

l.eli(;th, :{ mm.

Locality: Hernard harliour, l)ol|)hin and I'nion strait, Northwi'st Terri-
tories, .\uj;ust lit, I'.ll.'), in lied of river (1". .lohansen).

Simulium, sp. :{.

Pt I'A. DitTers fnim the forenoinjj in li.ivint; the thoracic respirat<iry orjian
each with twelve or thirteen lir;inehe>i ( IM. \'l, tin. liii and the armatiue of the
alidonien as follows. 'I'hird ami fourth dorsal -etinients each with {■\\i\\\ ver>'
small recurved thorns arranged as in the jirevious species, fifth segment with
the anterior transverse armature almost imperceptible, that on sixth, seventh,
and eighth consisting of a series of very small, closely jilaceil sjiiuules th;it
extends entirely across the -urfaee from side to side; apicd segment with two
Very conspicuous ujjwardly curved thorn-like processes, lifth ventral egmenl
with a 1 i- of small thorns on each side near jiosterior margin, si.xth and seventh
each with one such thorn similarly located.

Length, W ■ ."> mm.

Locality; Hernard Icirliour, i)ol])hin and Tnion strait, Xorlhwesl Terri-
tories, .lulv" 10, I!)l() (F. . lohansen).

Simulium, sp. \.

I'l i'.\.- -DifTcrs fr(>in tiie previous species in having si.xteen-hranched
thoracic respiratory organs (PL VI, fig. 12i. The ahdominal armature is as
follows; second dorsal segment with eight minute sjiines on each side — three in
a sulunediaii transverse group, three in a sulilateral similarly dis))osed group,
and two midway lietween these grou])s; third and fourth segments each with
the same nmnlier of s])ines ;is second, hut they are stronger, more api)reciahly
recurved apically, and the suhmediaii and intermediate series are not so distinctly
-"p:init-:-d and aiJjK-ar as a singlt" r:i*hi-r irrc-guLtr serie- of five thonr-; fifth :irtd
sixth .segments without well-developed sj)inules anteriorly; seventh and eighth
each with a (•<)m])lete series of si)iiiules near anterior margin; ajiieal segment
wi'h two to three small spines on each side; third ventral segment with two
thorns on each side, fourth with three, fifth with two. and sixth with one.

' ( 11 nil, hail Arrtir Hxim.IiIiiiii. In I. i- IS

IciiKtIi. J ,") inrii.

t..rHv AuKUst 1.., I!.|.,, ,„ I....I .,, nv..r; „•„.„■ I.M,.lity, July 10. HM.-mI'. Joh"!-
With Ihi. In,, l.„ ,|,,r., ,, ,„..ul...r ,.| larva- of whirl, 1 .h...., ,..,1 ,(,.. h.-nln

:'i'' iiiiilonnlv c.hMir.-.l. Stni.tur.il- thi 1 ,v., i >l'<«"'> thr aiitcimu'

lik.'lv thit „ tlw, I. . I Y , "^•"'' ,"'", '•"^•' 1^ •' 'III.' .s, mull 1,1,1 am vitv

;i. ^, ail;! I, ;is,;":;";';.lv'' '=''■""" """•""- -"' •"-"'^'- -• '•'• \m. ni^. f

^^^^^1 l^.^^^^;;;'" ''r,n,.lu> pa.n.l to .i.-ar l.as,. an.l vrry n^rular in arra.,K..,„..nt,

LEPTID.t.

Thi

Ptiolina arctica M illoch.
EMPIDlD.t.

^.".i 'n ti';'i;;:i.;;i::r*il:i:.::i^::;;;'':;;' ;;;.;;;:'l';;;;,;:;:r ^-" ■"-'"•" '-'- ^

The lame of fh,. s]n-ru-s which I hav fouii,! ii, 111

!• icilialc (d|)iilafloii takes place.

Rhamphomyia Mei^en.

.'BM '■wm-wr'r^Tam

I >l III) III

l.'l <

on.' I Imv.' Hli'iitifii'.l I (mv .■. -IikIi, .|,,iiI.i „- t.. \h,- .uinrtri.-.- uf iiiv i.lrntili.
.•iili..n iHTiiusr I h;(vr ii..t ll.r t.mlr l,..|.,f inr, Mn.l It «:i- honi ll,Mt -.x i|,.|t
fhf -i»'cii'^ wii-' uriu'iiiiilly ili-criliiil.

\\t \ Til Sl'H II »
M AIK*

I lliillin- lil.iik i>r liliiik-hriiHii .,

Il.illiri" \illii« -

- ''■ >■■' viTV iliMiM.'llv ll.irkiM.'il; ryi- -..|M|-.,i,.| l,v «|,|||, ,„.,■,,- MnMrn.ir iin II, -imI,

viiM iMiii.Jiinj ii, Miarmii iif VMtiu; hair- nii ilinrax .iiiil .■.lulnii. ., ilmk

IViiMira 111.1 a|,|.ii-.ulily ll.i.k.Mii..|. Iiitlr -.liMilir iIii.m lihia': .■vr> ii.M'li«i'ii'm"''i,V'.iil."''
...hlmuiHi- -iM iviMMMiil .•xlLihliMtf III «iim inarit.n; hairs, .n ilinraNaml al..ln.M..M liiir :i
.1 Hiii.l lai-i will, tlir ha-al ji.ii.t thukir ll.ai, lit.ia^ at apiirs, ami v-rv inilil, tlmkir llr.n
ha-al ji„„i 1,1 |„r,. ami „ihl Iiim; ail lil.ia^ ami lia.-.il Iwi. jmni, „f all lar-i «ill,
lalliri .III, >r. Iiitiu. Iilir hall- iliir-allv 'ii','„i !'■,

Tai-i 1,1,1 a-, aliiivr. Ug- will,..., I li,i,u ilia',-.i. hair- mi liliia'ami l.a>al l«u ji„ii|..,,| mu'VmiV''
-.•viTa of 1,1- hall-. ,„, t.avil jimii „f tar.-l .ill all li^Ks ,„i,>,,i,n,„„|v -lu,,,'^,;- ,Uu,

II III. -Is, liri^ilr-liki' ., ■iiiii'hil

I lla,!-. Ill- th„rax ami alHhiiiMM, v..||„«|.|| .■..:.;::■., i,lh,>r'h''n ('.'i^umX

llairM'ii Ih.irav aii.l aliLiii,.'!, Iila.k , ,„ ,, ,, '^'"""■

I tills, I I, III) ,1 , II. ^|t.

H:\l M.K.-.
I llallil.- I,l..k

llalt.n- y.ll..« -

J. Ml.l ami himl f..|ii.,ra »nli a wrirs i.f si|iiaiiiiila' al.>ii|{ lli.- i...«i..|i>-v,i,ii;,l ,„-,iK,n, |,.,,.,|

J'l' ' 'ill"' '■'■■-I ill 'l-'-I II- 'llll■l^ ll> .-.Pll-.-' ..I lll'ia- -,\lll \.l,, .Al,.„,|||,i; I,, „,.,ri.i„

"' "'"'' hi, -In II,' ,,

r.'im.ra .l.;v.,i,| .,f vinainiihr. at iii.,>t ^^ill, l,ai,> ,„■ l,ii>t|,.-; .|\lli v,„i m.i ,\i,.„,||i',i: ,,"'''
liiariciii ..I nil, II .,

;i. ■I'il.ia| ami tar-i «,il, .I,.,,-.- -h.,il l,;,ii- ,,| „i„r,„ii, Mr,i,ml,. «|,i,.|, „,,«l„.r.- ia,- | |„ '

li'lltflh Ih.. .llaliiil.T 1,1 111.' |ialt ii|i,,ii whi.l, ih,\ air -lUiMlnl nr^iiiii n u

lil.ia- aii.l latM «ilh soars,.. ,i.,iit hrisll,.-, many ..f whi.li .v.avil in l.aimli llir ,|iain..|,T
.il tiliiM' -ir tar-i, ll,..-i. ..ii .l..rsiiin ..f |,a~al j.,ii,I i,f la'-i v.-ry iimiiniil n, imll,

■1 V,.„li:,l |,lai.- I„.|«.-,.n l,as,.., ,,|- f,,r.. .•,,vr with l.,i,tc |>al.. hairs; !„,„..- ..n ll,..ra\"an,V'ilI,'l.,".''
iii.i. y..ll.,«i-h i,ll,.,,iil„,.i C,,,,,,,!!,.,,'

\iailral plali' l...m.-.-n l.asi's oM.ir.' i-ovr liar.- hairs ,>,i lh.,ra\ aii.l aliil.uii ' i,k

III. 'n'nii^ I, ^[,

Rhamphoniyia erinacioides, n. sp.

MaI-K. Hlack. siilMipaiiiir. U iiins sliglitly l.mwiiisli. veins .l;uk l,r,,\vii
MMllcrcs hlack-liruwii. Hails mi nil ire insect t'liscdus.

Kycs scpar'alnl hy as ureal a wi.lth as ilislanee acidss |i«isleii.ir ,.(■■ lii-
aiileiiiia' with l.asal tw.i jiiiiits siil.eimal in ienfitli. lliini joint hn.a.l al liase'
(apeivil liuni near l>ase to apex, its enliiv leii(itli slightly m,,!,. il,;in twie- its
Urealest widtji and I .") as ureal as first anil Miamd lamiKined ; apieal style thick
iine-lhird as Inn;.: as tliiid joint: proboscis sleinh^r. lapered to apex, its eiitin'.

lenttlli •■i|iiai to I ■:. the height of head: palpi short: ipul. with lone rather

liiiek hairs. Dorsum of inesonotiiin covered willi ionu. rather dense, iiprijiht.
Ihiek hair>: ventral piothoraeic [liate lieUveen fore coxa' hare, the portions of
thorax iinnieiliately aliove liases of tore coxa' with ioim hairs: hairs in front of
lialteres nuinerons: scntelhini with a closely -et friiifte -.f upright hails alonit
posterior inaiKin (2t HO). .Vlxl.inien with ilense erect stout hairs on entire
surface except on the hypopyuiuni; hypopyfriiim iarue. upper processes lonji
directed cephalad over dorsuin, as shown in I'i. MI.h«. (i, the filament not visible
except near hase. Femora very noticeably thickened tibia' and tarsi more sien-
<ier than usual: all femora with rather dense hairs, which are not so thick as
those on abdomen, iiind pair with the ventral surfaces devoid of loiin hairs exceiit
on basal fhinl. beyonii that with dense miero.seopic pile; all tibia' with siiort
ii.'iirs on dorsal surfaces and dpiise erect microscopic pile on ventral surfaces;

'5i^_/-rJ6_l

tt(

i'lniniliiin .\iihv t'.xjHil, •in. IDI-l-IS

l.ir>i iH.t iH.tic.al.ly I.m-iIn ; cIiim." vir.v Ioiik .iimI imiiiIi nirvr.l Dinal nil
.loH'.l, iKiirii.'il ill M/.I', vein rloMiiK l"H«r |M>tli<iti of ii|m\ iiiiiiIi iiiivt-il; .>-i\tli
vein l.'iiiit, lull iiiici'Mlilf III iii:ir|{iii.

l.t'iiKili, ,'i iiini.

TyiM- li.calily: West of K.hik«ih\ ik. < aiiiiliii Hav, Alaska. July I. I'.tj I
iK. .loliaiiscin. I'aratyiM-. Harlcr i^laml, Arctic coa>l of Ahii-ka. .Inly' II, |<t|J
( J). .IcniicKN).

Rhamphomyia ursina, n. -p.

Mai.k. Ulack, ^litjiiiiy shiiiinii. VViiijt- -lijjliilv lirowiii,*!!. v.-inn l.lack-
liiown. Ilaltcrcs l.io.vii. kiioli^ l.lack. Hairs ,,ii cntiic insect fiisciis.

Kycs continuous; tliinl aiilcniiai joint loiintr ami narrower liiaii in llie
l.re.c.iinK species; prolioscis slender, ^li(!litly longer thai height of liea<i; paliii
.-mall; occiput with niinieroiis slender hairs. Hairs on dor-uni of inesonotiini
very filii', erect, and moderately dense; pleura and protlioi.ix as in preceiliiiK
speeich; scutelluiii with marninal frinije of lonu hair> ■ IJ Iti). Alidoininal li.iirs
fine ami sli.,;t modcatel; ,lent.e; hypopyuium in tvpe liadlv crushe.l, I. in in
general structure .similar to that of preceding species, .litTerinu essentially in
havintj the two stout anteriorly directed picicesses covered with .soft short hairs.
Femora si.. nder, l.arely stonier than til.ia', for<' and nii<l pairs with iMoiler.itely
lonn hails, hind pair ••ilmost hare; all tihiii' and the l.asal two joints of all t.arsi
with dense lonjr, fine hairs dorsally; hasal joint of fore tarsi slender, thinner than
tihia ami as lon(£ as joints two and three .•omhined; hasal joint of mid t.irsi thicker
;ind distinctly shorter than that of fore tarsi; li;is;d joint of hind tarsi |«i.'e .as
thick as mid pair, aii<l distinctly thicker near apex than hind lihia- at apici's.
Discal cell normal, the vein ilosinn it on lower portion at :ipe.\ nearlv straitrtit;
sixth vein not extemlini; to mar(iin.

l.ciiKlh. I mm.

Type locality: On sandy beach Hernard harl.oiir, Doh.liii, and rnion
strait, Northwest Territories, .Inly lit, I'M.') i K. .lohaii.sen i.

'I'herean- two females in the collection which prohahlv ImIoiiuIo this specie^.
One of them is in fair condition and is described herewiili,

Idi'iitical ill colour with the mjile.

Eyes sepani ted by a space (iri iter than distance across posterior ocelli;
iintenna- similar in structure to those. \n\i- \>i triiKiriolilis. Thorax less den.sely
hairy than m male, the sciitellum witu about eitihteen to twenty bristly hairs.
Abdomen pointed apically. Lejis slende--. laisi not so much thickened .-is in the
in.ile. the ba.sal joint of the himl pair eipi.d to hind tibia 'ii thickness; h.iirs on
lens short, the lonuest ones not as loimas di.imeter of tibia: no out st. •mil ins; bristles
on basal joints or tarsi. N'enation as in nude.

Localities: Sandy beach. Hernard harbour. Dolphin and rnion strait,
Northwest Terrilorie-, .luly l!t, l!t|,K Bernard harbour, .Inly, l!MC. 1 1\ ,Ioh,.nisen i'.

Rhamphomyia similata, n -p,

Ar.\i.K.- Similar to the precedinj: species in i dloiir.

Kyes do.sely contisruoiis for a considerable distance below ocelli; third
antennal joint about four tiiiu- as lonn as its ba.sal width, style short, aboiit eipial
in h'linlh to greatest width of third joint ; proboscis nearly twice as lonn as heiuht
of head; occiput willi |..nn slender hairs. Dorsum of pronoluin with dense, loii);,
erect, slender hairs: pleura and protlior.ix as in piecedinti; species; sciitelhini with
ten to twelve lonn liairson margin. .Vbdomen with rather sparse hairs, which are
lonscr .liid iiioif iiuihcioiis wji pusleric.r iiKupins of >. ^in.Mi.-. ii\ i.opvgium similar
to that of urx'nia. Lens rather stout; all femora with short sparse hairs, those
on apical half on antero-ventral surface of hind pair more dense and setulose-
basal joint of hind tarsi thicker than that of other pairs; all tibia- with numerous

l-NK lu.i,H .l,„>ally, whirl. rx,v,.,\ „, l.,.„,|, ,(„. .Iianulrr ..I t,l,u,. Hh,,... , ,|„.

Fkmai.k. Xtirvvs ill nil • with Ih.' iiiali-

Kys s..,,anit,..| l,.v >.l,„ut twi... tl... ,li.i,uHT ,„t...^ i.,...|..|H,r „r,.||. aiil<.„n .•
M. ... tlu- n.al... I Ii.,n.x ir.s ..„Ms,.i....Mi.lv ha.iv .1,.... in nalr, li. .1 ,„ 1 ' •
I..OWI, ,,n„n.;sr..M,. ,.,,„,allv iiMlis.inrtly l.iv.t,-..,., LHw..,,, Ih.\ i , I,
...W...I ar,„s,„l.als; s..m,..||,.,„ «,th ,.i«l.t sIlihI.t l.n.H.... Al -1 , ... .,, [
.. -Ill .^ tl... ..vi,„,.„..,. v..ry ..l..|i.|..r. |...«s Mlnilar t.. tl..,..- „f n.al.. "x .. | .
. >. J..... ..t I.,,., tars,... ,. ,i.„ a. ,l,...l, a> ,il„a. a.i.l that tl... I a.r> , . .

''""Ei^f'i'EE ^ "' ^"'" '""" "'"'" ^ ""

n...;Si;inrm ' >■ -• N-"--

...ay h.:C ;:: a'lhiT:';::;;;";:.':::':''"' "' ■ ''-'-^ ^''«'"'^ --^ •>."■■ -"•

J,....al.ty: ( •...kl..,,.. |,..,„t. l).,|phi.. a,„l rnj,: , strait, N...thw..M T..rnl...i.«

Rhumphomyia herst belli . n. -p.

Fkmu.k. IMa.k M,.,„„K. Wi„^. ,|m|„ly ai.,1 ,.v,.„lv l,n,«M..,l. H:,!.,.,,..
.'lack. Hails tl.|-.>ii)jh., lit liiM.o.is.

Ky..s s..,.a.at...l l,y .listi.ully ......v than Uw.-.. .1... wi.llj, a,',-..,, |.„>„.n.„-

.. t .. ,1 anl..,n.al j,„„t th,v,.„n...s as l„n« as ... I.asai ui.lth; mvI.. ..,..-

'Im.l as l„,,(r as th.n! a,.t,-n„al jon.t; pr„l,.,s,-is 1.5 as l.,nK as h,.mh. uf !..•■ I

"'■',''"" 7' ;. -"'"....■.„.- ha.,s. Hairs |,.,s ..f .....s.,,,.,,.,,,. si. „..,., I .

:..,l-.-.o.- halt ..f .hs... a.-,.,.„..|,ats , ^^ „.,„w..,l ; .,„t,.||„n. „,ll. al..„n t .' . I, , Is
Al,.l..n...n pn.nt... apn-ally; .,vip„sii„r v..ry sln.,|,.r. ],-^, rath...- ' „ 1 - .M
■I';"," •;' I'"" '","' ■""'.•'"•M -a.-h as thi,.k as til.ia- at api-'. 1 , . [ ■;,
''Nm„l .a.s,.s ,h..-k,.,- than h.n.l „l,ia at ap,.x; n.i.l an.l h.'n.l li.,.. i a wit

"' "^ "f ''•I"""" =''';">I tl... p„sl..,-.,-v,.,.ti-al i..a.Ki..: tih.al l,ns,l.., v.-v •- .k

:n..lspa>s.. „.„... n.,,,-!,. ,..,.,alh„« ,i.,.„n,.t..r „f tibia-. V,.in .l-sin^ l.,w.. - ... t ,,

Typ..l,„alily: Ilciscl...! islan.l, V.ik.m T.T.iloi v, .l.iivJ!.. I<I|(m1. ,l..|...r, -.■,,)
I Wo sp<.(ini..ns. • .M.I1..11 .1 1

This ...ay 1... tl... f..n.ah. „f ,,•;,„«•/,«/,.•. I,,,, i. ,|,„.s „„t aKi... with th.- n.-.l.. in
|M.J. ,-ha.a.- ..,s as tl... v.-ry sl,.,„|,.,- tihi;.. a.,,1 ta.si as, f,„,.. p,..vi.,„ ^ ,o . , !
I sh,.„|,| |i„|>;, „ „„^r|„ I,., I,, if it u,n.th..n.;,l,.,,ttl.atsp...-i..s. 'Mxi'......

Rhamphomyia albopilosa ( ■i..|iiill..it.

/{hr,n,,,h,„n,„n „U.,.,„h.u ( o,,,„ll,.| t . l',„,., \Va>l,. A,-a,l. ^ri , vol. J, HMH), ], IIS.

I What I tak.. f. 1... this sp,.,i..s is .■..pi-,..<..nt...l in the i-(,ll,.,t.,.n hv tw,. f..n,al..s

^ As t... s,H.,-„.s was ,.,-,j:,nally , ,.s,-,il„.,i f,-„n, tw„ ...ah-s, tak.-n at li..,^ l.av, \ a ka '
I MIC ti'iiialc IS (i..s(-iili<.|| h(.i-(.will.. *^ MX, .v.a. h...

I Ikmalk. Hla.-k, slightly shiniim, (listinctlv irrr.v pn.i-!f'-c<..it ,.. .„,,.;.,i!.. . ,

j;";"" ••""' ai..i.......„, \\ inp shKhtly a...l .n.if,.,-n.Ty l.rownish, vins .lark'l'.mvvn"

>< I ow, .M-iitclar l.i-istl.s, ii...st of th.. haii-s on ......iput. an.l all of thos,. ,,., „.l„i

.....1 antenna- hlaok; til.ial an,! tarsal l>iistl..s ,-„ I haiis l.la.-k ' '

w

mz~:^SAnm

4Sc

('niKviinn Arctic K.rpcdition. t!)l.1-IS

I'.vcs widely sopiiratcd: third miteiitial joint conical, ulxnit 2-o times as loiig
as its iiasal width; style slightly over one-third as lon^ as third antennal joint;
proboscis fidly twice as long as height of head. Hairs on thorax long aii<l soft,
the acrostichal series in two to three irregidar rows; plate on venter hetween
fore coxa' lonn-haired; sciitelliuu with four hristles. Ahdonnii rather acut(>ly
pointed apically. I-egs very slender; femora with very short surface hairs; fore
tibia- without difl'erentiated bristles; mid and hind tibia' with a few short bristles
on dorsal surfaces wliich are not as long as the diameter of the tibiie; tarsi
slender, all joints with stitT black setuhe ventrally, and a few differentiated
setuhc on dorsum of at least the basal joint. Wiiijt venation normal; the vein
closinjr lower portion of apex of discal cell very oi)li(|ue, almost straight; sixth
vein thick to apex, extendinn; to margin of wing.

Length, 7 mm.

Localities: Herschel island, Yukon Territory, July 29, lOKi; Cockburn
point, Dolpiiin an<l I'nion strait, Northwest Territories, Se])tend)er U, 1'.>14
(F. .lohaiiseii).

Rhamphomyia conservativa, n. sp.

^^\L^;. Black, suboi)a(pie. Wings brownisli, iTiore distinctly so basally.
Halleres yellowish. Hairs and bristles black.

Kyes contiguous; third antennal joint nearly three times as long as its
width at biise; style stout, rather more than one-third as long as third antennal
joint; proboscis about 1-2.") as long as height of head. Dorsum of mesonotum
rather densely hairy, the hairs upright, sleivler. and of moderate length; ventral
plate between bases of fore coxa* bare; hairs in front of base of halteres long and
dense; scutcllum with eight to twelve fine hairs on posterior margiti. Abodmcn
with rather sjiarse short hairs, whicliare longer near posterior marginsof segments;
hypopygiuni of the same general typeas tliat of rrinacioiilis. but the portion that
is directed cephalad over dorsum reaches about three-fourths of the way to base
and is pale yellow in colour, contrasting strikingly with the dark abdomen;
lower po.<terior angle of hypopygiuni produced caudad in the form of a short
subtriangular jirocess; hypopygial filament very thick for a short distance at,
base, then becoming abruptly setiform, hidden for the greater i)ortion of its
length. Legs slender, femora with a number of very short setuhe on ventral
surfaces, which are confined to basal third on hind pair; apical two-thirds of
hind femora and the whole of hind tibia' ventrally with very dense microscojiic
pile, intermixed on the tibia' with short erect spinules; basal joint of hind tarsus
nearly as long as the next four joints combined, the entire tarsus much shorter
than tibia; dorsum of tibia' and tarsi with short setuhe; tarsal claws very much
curved, sickle-shaped, of good size. X'enation as in previous species except that
the vein closing lower portion of discal cell is distinctly curved.

I''k.mai,k. Similar in colour to the male, the wings more distinctly browrdsh.

lOyes separated by nearly twice the width across posterior ocelli. Dorsum
of mesonotum with fewer and shorter hairs than in the male, the anterior
acroslichals four to six-rowed, .\bdomen pointed at apex. Legs nunc setulose
than those of the male, the hind femora witli setulose hairs on their entire ventral
smfacc; ventral surface of hind tibia' with short regular setuhe instead of erect
|)ile; basal joint of hind tarsus longer than next four combined; tarsal claws
nuich shorter than in male. Wings broader than in male, the venation sinular.
but vein closing lower portion of .'ipex of discal cell less curved.

Length, (i- "> 7 S mm.

Type locality: West of Bernard harbour. Dolphin and I'nion strait. North-
west Territories, .luly 14, liUfi. I'aratypi's. Herschel island, Yukon Territory,
.luly 20. litlii: rninard harbour. NoiiiiwiM Terriioric>. .Inly 10, 18, l\», ami
.\ugust I 7. IIU."): Young point, .Vorthwest Territories, .luly 18. 1<) 1(1 ( F. .loh a n-
sen). Nine spe( imeiis.

l)i})tera
Rhamphomyia sp.

49 c

Two laiya- of ;t species lielonninK to this (iciiiis are in the (•oli<.ctir.ii

In eijtjth they are 13 mm., and in eohnir pure whit.', witii tl xception of

the eeplia he parts which are l.hick-. Tiie neneral stni.'tine of tiie h<'a.l is the
same as tiiat ot l{h<niii)h<>„njia 'limi>li<,ta I.oew, a si)eeies I liave fiuured and
descrilied from Ilhnois.,

Tiie niaiKhhles are sharp and much curved, wiien fullv pn)trii(h'd extend-
n.K .eyoiid apex of th<' sharply pointed hi!)rum. The proihoraci.' spiracles ar.'
small roun.led, and slinhtiy protrii.h'd. Apical senm.'nt of alMl„men endinc in
our short, pointed proc.sses. the two upper distimtlv smaller than the two
lower; spiracles rather small, round, situated „n the under side of base of upper
proees.ses. No distinguishable hairs on body.

I-oealities: Demarcation point. Alaska," in wet moss-pilhiw. Mav ''() I'Ut-
Hernard harbour. Northwest Territories. .lime -JS. l'.)!,") ( F. .Johanseiii.

DOLICHOPODID.t.

The larva- of the dolichopodiil genera in this collection are as far as I
know, f<.und in muddy streams or ])o,.|s. The imagines are pivliceous, those
or U !j,lro,,lii>n,^ imd Sctll,,- almost exclusively so, though Dullrhopn.s is mo.st
ireciuently loiind feeding uimn the nectar or honcydew on i)lant-.

Dolichopus Latreille.

There are only two si)ecimens of this genus in th<' coUection, one male
and one teinah', possibly representing only one s|)ecies.

Dolichopus dasyops, n. sp.

M.\LE. -Hliie-blaek. with a distinct eui)reous tinge. Anlemne and arista
back: face black, with dense yellowish brown i)ile: pali)i vellow: proboscis
black; i)o,stocular eilia entirely black: hairs on eves vellow. Dorsum of thorax
with coppery ting<': fringes of s(,uama> black. Hvpopvgium black, lamellfp
white, blackene.l on aiucal margins and with black hairs. Legs vellow fore
coxiP slightly infuscated at bases, mid and hind jiairs black: ai)iees of hind tibia'
apices ot basal three, and all of apical two. joints of fore tarsi, all but liase of
mi< tarsi, and entire hind tarsi fuscous. Wings clear, veins dark brown,
ilalteres yellow.

V ??'"'' •^''''^■^' '"'*''""''' ""t t'l'>»Kiited. third joint jM.inted. shorter 'Jian high
(11. \ ll,fig. 8): arista with second joint much elongated, third ilenselv i)ubescent ;
face parallel-sKled. about one-sixth the head-width at its middh'. not descending
to lowest level of eyes. Sciitelluni with two strong bristles and two weak hairs
Hypopygial lamella as in PI. VII, fig. <). Fore <oxu- with s'.ort black hairs,
and a few long bristles near ai)ex: fore tibia with three to four antero-dorsal,
two po,stero-dorsal, and three to four posterior bristles: fourth joint if fori'
tarsi dilated from base to ai)ex, fifth very much broadeneii. its width about
equal to Its length: mid tibia with one ventral, two to three antero-veutral,
four to five antero-dorsal, and five to six posterior bristles: mid tarsi simph'.'
witli a few short bristles on apical half of Ijasal joint. ..ne of which on dorsal
surface is c .nspicuous: hind femora with inconspicuous l^lack hairs on apical
portion of postero-venlral surf.iie; hind tibia with short regular hairs on basal
two-thirds of antero-ventral surface and one long bristle bevond these, antero-
and postero-dorsal surfaces each with about eight long bristles: postero-dorsal
surface witii a .slit at apex which runs forward on to dorsum: posterior surface
densely black .setulose on apical half: ba.sal joint of hind tarsus with about

■ Hull. III. .State Liil). Xat. Hist.. vdI. li', :irt.:i. p. 401. liMT.

Vol iii--4(l<lii:i— 4

50 t- Cnnadiun Arctic Expedition. II)IJ-I<9

♦•ight bristles in two irregular scries. Curve of fourth vein distinct hut not
abrupt : a])ices of third and fourth veins -ubpara.'; :, costa not noticeably swoUen
at apex of first vein.

Length, 5- 25 mm.

Type locality: Bernard harbour, Doli)hin and Union strait, Northwest
Territories, .Inly 10, l'.)10 (F. Johansen).

This species is most closely allied to biri'ipcnnis Meigen, but ditTers iu
havinu the hind femora without long pale hairs on ventral surface.

Dolichopus, s)).

A female in collection which is in ver> poor condition may 'oelong to dnsiiops.
It agrees verv well in colour with the male above dcscrilied. The wing has a
knot-hke swelling on the costa at end of first vein. The hind tibia has (m basal
half of the jx stero-dorsal surface a distinct groove or channel which is evan(>scent
at its extremities, and at apex on dorsal surface another short groove; the bristles
on hind tibia are as follows: five almost exactly on the dorsal surface, six to
seven on antero-dorsal surface, and four to five on antero-ventral surface whii'h
are very weak but increase in strength to apex.

Locality: Nome, Alaska, August 21, lOHilF. .Johansen).

Scellus Loew.

described North

The Hies of this genus are predaceous. There are six ilesci
American species. The single species in the ])resent collection was originally
ilescribed from northern Europe and was recorded from Fort Hesolution, Hudson
Hay territory, by Loew. There are no subse(iuent recor<ls for North America.

Scellus spinimanus (Zetterstedt.)

llijihoiihorua iiotnliis Zcttcrstoilt, Iiis. Lapp., sp. 701, 1H;{8.
lliiilri>phoru.< xiniiiiimini.t, Zottcrstcdt, Dipt. Sound., vol.2, i>. 44.), IM:}.

Two males and ten females. Bernard harbour, Northwest Territories, August

2(5, lOlo; two females. Cockburn point, \rctic coast, Northwest Territories,

Sei)tember 7, 1914 iF. .lohansen).

Hydrophorus Fallen.

Thc-e are three species of this genus in the collection. The imagines arf
l)redaceous and niii with great facility upon water surfaces. The genus \t
northern in its distribution.

Hydrophorus innotatus Loew.

Ilij'li-Kiihnnis iniioUilii^ Loew, Mem. N. .Vin. Dipt., vol.:;, \). 2\2. iNll.
Represented in the collection by three specimens: two males, Beriian
harbour. Northwest Territories, .liine, I'.M."): and one female. ' 'ollinson point
Alaska, June 20. 11114 ( F. .lohansen).

Originally des<TilHd from Sitka. Alaska. 1 have seen examples Iron
Pribilof islands.

Hydrophorus signiferus Coiiuillett.

Ui/<lri>iihi>rus ,s„/H,/(r».s Coquillftt. Tlic fur .-cals and fur seal i.-lan<ls of tin' north Pacifi
Ocean,' vol. 4, p. :i44, isW.

1 idintifv a^ thtr- ^ln■cies tnr-lve specimen^, representing lioth sexes.

The species was originally described from a female specimen, and severa
important cliarai'ltrs are omitted. I, therefore, redescribe the species froii
both sexes.

DipUra .., ^

Mai.k am. I'KMALK^^Hla.k. with ii .listinct Kr.rnish lustr... Froiis upaiiuo
. ark- ,row„: a„t,.„na> Mark; fa,.,. gm-nLsl. al,„v,.. th,. surfa,v witl, ,l,.„s,. n i -
..1 I...ll,.n wl.H'h ran;ly „l.s,.ur,.s th,. ....tir,' surfa,-,. i„ ..jth.-r s,.x. fa,.- hZll
....t.n.ly s.v.r.v ,.,„s,. ,„ th.- ...ah., l.ut in tl... f.mah. th,.Kr,.at,.r i..,rti,.,. is I r„« . ^h

ha.k .r.>th.> an.l y..lh,w ha.rs. Thcrax almost Llack. with a ,„,,n.„..s stri..,-
ahniK !..!,. ot ,h,rs.,-,.,.ntrals an.l a bn.a.l s„l,h.t..ral vitta ,.a,.h si.h'. \i„h n ...
w.th a .....r,. i.r,m,„.n,...,i Kr,.,.nish ti..^, tha,. th„rax a..,l ..suallv sii^l.tlv ......m.us

surfa,,.> ,.t tii.ia. \\.,.Ks ch-ar, w.th a .listinct l.nnv., sp„t t, ss-v..i„ and

an..ti...r h.f„n. muhlh. .,f last s,.,.t.„., „f fourth -vin. S,,na„K,. with pah. fri.iR.s.

-Male - Ih.nl a.. ,..i..al j,..nt sh,.rt, ..btuso at apex: fa.... in i,„th s,.xes

br„a,l, shKhtly w..h.n...i h..h,w, th,. „,,p,.r half sliRhtlv v,.rti,.allv r,.^ros,.. >ro-

br.>th. is i,ar,.ly .l.stinKU.shahh.. S,.ut..llun. with four stn.nn .eristics For,.
..rnoni in ...ah. ,x,.avat,.,l at ap,.x h,.h,w, an.l with four to fiv,. short st,.ut l.risth.s
l.asa,l of th,. ..xcavat.o.,, o„ th.. ant..rior si.h.; has,, of f,.mur siightlv swolh...
?,„l n.''V' i ''""■'•<'-v.'..tral ,.,1k,. with a .(.ri,.s of fiv,. to s.-Nvn wi,i;.lv-,,h.c.Ml
M.tuhp; ven ral surfa,... of fore t.hia with a .sori,.s of ,.h.s,.lv ph„.,.,l spin,.;; fore
tars, normal: m..l an,l h.n.l f,.mora ..ot swoll,.n, both pairs with a f.'w b.istl,.s
,m ap.(.:il half of ant,.ro- an.l p,jstero-v,..,tral surfa..<.s; n.i.l a..,l hi.,,1 til.iic
with a f,.vv w.,l,.ly pla(.(>(l bristles.

Femalk.- Sin.ilar to mah. ..xcept that the f,.r,. f.-n.ora ar,. not <.x..avat,.,f
n<.ar apex a.., la,.k th,. gniup ,.f bristh^s on th,. a..t,.ro-v..ntral si.l,.. a.i.l the
tor,, t.h.a has h'ss n'Rular and slinhtlv longt.r -entral bristl,.^

4 ?'r Ii\;.,''';l''''.'' ,-^''i"'^". two specimens, .,uly 2!t. l!ti;5, an.l t,.n sp,.,.in.,...s,

Aujtust (., ]!li;{ (F. .Johansen). ' o". "■ ,

Orininaiiy deserib,.,! fr,)m Commahder island^, I^erinR sea.

Hydrophorus pilitarsis, n. sj)

-Male and Female. -Similar in c^h:

o.ll

. . -- c^hmr to th.. precedinjr si),.,.i,.s, (litT,.rinK

ly .n hav.ng h,' i)ost,.eiilar eilia ..n h.wer half almost ,..itir..lv ver:,w a.i.l the
lore ....xa. w.th Io.ik y,.llow hairs an.l only a i.air ..f lilaek b.isti,.; at mi.ldh. a..,l
u t,.w bla,.k s..tula. at ap,.x i„st..a.l of b,.inK almost ...itirelv bhu-k s,.tul..se

AlALE. la.-e wi.h.st b..low ini.ldle. sli^htlv narr,.w,.<l at l..w..st ,.xtremitv
ant..iuia. as .„ ..,,//(, frn/.v. Propl,.ura with on,. bla,.k bristl,. an.l a ....n.b.T of
lonji y.'llow ha.rs. I- or,. f,>mora .i>,.re noti,.eablv sw,)ll<.,i tha.. those of siiinif,ri<s
.i..t ..x<.avate,l at aiH'x ....ar base, with s,.ven t,. eight st..ut. ,.los,.|v i.ia,-..,l."
rath..r short br.sth.s on th,. wntral surfa<.e: a numb,.r of lo.ifr bla.k hair.^ „„

ai.i.'al half of post,.rior surface; fore tibia th'iek..i.,.d „., ai.i..al half! th.' ant.'ro-
\,;ntral surta,.,. w.th .l,..is,. m.eros,.,,))!,. ,)ile a..<l v..ry miiiut.. spiiuil,.s; for,. ta.-si

,)f

at bas,. on

111 api.'al two-thinls of

1.1 f..iii<ira slender, straight,

).a. with a f..u- short liri>tles. Fast

eo.ispicuously eoiiverfrent api<.aliv, th,. ilark

with long blaek hairs on aiit,.ro-v..ntral niai.niii of biisai an.l .lorsal -iirfa,..

ii.'Xt thr..,. joints; mid fem.na witl. four t.. hv<. lo.ifi. hia.k bristl.

.■iiitero-v..ntral surfai-,. an.l nio(l<.rat,.lv lonn, bla.k hai.-

post,.ro-v,.nti-al surfa..... th,. femora sli)jlitlv b,.nt; hi

with short sf.tuhisf. hairs; mid ami hind til

>,...tions ,)f v.. ins thr..,. ami four

-p.it on last s,.,.lion of four n,.ar..r mi.i.il.. of that sei-tioii than it is iu si,,,uf,ru^

rE.MALE. Similar to mal.. ex(.ei)t that th.. f,ir,. fe ' "

lack the ba.sal s,.ri,.s of str.inp bristles, and ha'

post,.ro-veiitral surface l.-ss ,.los,.ly pla..,..l. Tli.. mi.l f,.inora hav,. two t,) th.-,.,
strong bnstiis n,.ar base. The f.ire tarsi hav.. onlv th.. ii..rmal hair<

i-,.nKtl., ;{•.") 4-.") n..n.

Type l.M-alitv; Ti.|l..r. .\laska,
AiiKiist (i, l<tl3 (F. .lohanseii).

Vol. iii--469«;l-4i

c.imra
ai)i(-al

ir." less tliiik,.n,.d,
seri.'s of hairs on

tiv.

specin...|.s, .July 2'.t. MILS; ou,- sp,.cimeii.

•'•-'' Ciiiiixlinn Arctic h'xi>iilitii»t. t!>l.l-!S

This s,,,.ri..s M.Mv I... .listiiiKuisl,,..! from any pn.viunslv ,l,.M.,ilM.,l fn.n.
No th A.n,.p..a ,v tl,.. i.a.r.y for,, tarsi of th. ,nal.. an,l tl... prrsn,,-.- of hristLs
Ileal hasc of inid tcinora in hotii sexes.

PHORID.t.

The lar\;e of the moii!, in the |)i(.s..|it eolle.'tion are foiin,! in fmiiji, niainiie
or (leeayiiiK vejjeiation.

Aphiochaeta Mnies.
Aphiochaeta alaskensis, n. sp.

-Mai.k. nhuk. sul.opa.|U<.. l.eKs l,la<.i<, fore ti!.ia. an,l tarsi, exeept lip

iXen >:'"v"-,'"r" r' ;""' ""' ''r' '"'''" '"•"^^"- ^^'"'«^ '■'-'■• ^•'•i"' -I'-k

llalleies black, kiiol)s testaceous yellow.

rosl-Miilennal l.risties four in nuiniier, the lower pair nearlv as larne as the

upper low..r lr.,n,.al hnstles in a nearly strai.h, 'transver.s.: line: 'n.en a-

al.m_e the nonnal size, third joint round, slishtlv less tlian half as larir.. as eve-

palpi arK<.. eo.ispicuoljsly set..s<.; clypeiis pn.jectiiiK, p,nnte,l; arista almost;

.are longer han width of frons; l.risth.s on che,.k loni an.l strong. I o sun

thorax with rather dense setulose hairs; scntellum wi,h two bnjr apica

...tl.s and two uvak latera hairs: niesopleuia with a numher of weak, hair-

Hs, ; : ;'' '•" ;'■''"''■ ''"'";■""■ ='"«''•• AlMlome,, tap.Med to ap..x, with a few

I >stl. son apical .segment: hypopy^inm rather larire. with a lon^ l.ristle on .M.-h
sue near .ase ap.ca process lar^e, oval, J.egs slend.T: foiv tarsi l.road. Inn.
ten, ,a with short ch.se .rinse at i.ase ven.rally: hind til.ia with a fringe o

, r ''."n''";"*"''"'^'" "" "'•■ "I'''"'' <li<''''-l''»'>ths. Costa extendinir jn.t

s or o nmldle oi wm... firs, .livision slightly lon«,.r than .he other two conlhin.d

I'e , T ""■'^ '' ^'■••">wl: .•oslal fringe very lonu an.l widelv spaced, ,1.;

ntt Isl : i -7' '>■;■","•'■''/" ^'T'- ',"■'"■•>• ^"■='i'il" f'"- »'"■ n.mam.ler ui its

llo<^ fifth • ' '" '"' '""' '■"•""*' ■^"''''">' '"■"'■'■'• '" -'I"'^ "'" ^^"'« ••>^'"

''■'■■^'■^''K- ^i"iilar to male. DilTers in having the abdomen pointed Mt ap.'x,

tlie anienmo and palpi smaller, and the fore tarsi slen.h.r
l-entith, 2 mm.

specilm'ns. '''"'""'■'' ^"""■' ■^'^'^'^^'' -^''ti""^" ^»-^^. n'l(i (!•-,. lohanseni. Ki^ht

in n,v 'kcv?*' v"' ,'i'"r'-' i"'^'''"'''*'': '"'<J<"" ^lali.K'h, to whici, sp.vies it runs
> k > to North American sp.Ties.' It dillVrs. however, in the much dark.M-
palp', lame anfmne, and shorter costa. and in several other chara(.ters.

•Vphiochaeta platychira, n. sp.

•ire .:min!|';- Vi''''l'''''' '" ''"'"'"■ '" ""■ l"'''''''''"« ^l»'<'i''-^ '•^••'■Pt that ,h,. halteres
.lU' eiltliely r.lack,

rha'tolaxy of head as in niaskrusi.s except that the lower posl-ant<.nn.il

II >ii!( . palpi not as stroiifily hrisll.-.l as m nloArii^l... .M,.so„leura Icire- scutel-
•"-." »;tli two lonsi.rislle.-.. Abdomen narrow, apices of s..pn en s 1 eallv i h

i.'w Ions hnstles sixth will, a number of bristles on posterior m „•>£ i ' h • p.
P. jrium small, w„h one ,o two shmt bristles on each 'side, anal proces^ smal!

•1 UMee as long as broa.l: himl t.bia with very short setulose hairs on postero-
lorsa surface. ( osta to very slightly shor, of middle of wing, firs, division
I-2.. as long as nex, two together, thini about two-thinis ,..s bug as s..cond
eosta fringe very long, .!,c !-,nstles twice as long a.^ fork of (hiid ,.in- four,,'
v..m leaving beyond fork of third with a slight cu?v,. and running n.-ar v'st ig
t" >"argin of wing. ..mlmg d.s.inctly nearer to ap.-x of wing than .U.es fifth

' Vriir. r. S N:ii .\I„>.. vnl, l;j, |), 4.V.>. ]'.)]>,

Kinlit

Lt'llfrtll, 2 IIIIII.

Typt- I.Dc.ilitv; Ndiiic, Al;i>k;i, .\unii>t 21, 21, iiikI 2.'), l!H(i i F. .Ii)liaiis(ii).

This species niiis down to piriiUm '^.'alloeh in the paper previously referred
lo. I)iit the <-olourof ilie le(;s, anil tin weaker tiliial setiihi' are siiHicient to warrant
their se])aration.

Aphiochaeta, sp.

.. ......... ... J,.-.., . .,11.11, i..n a ppears to iieilistimi immu im- [ire\ lous sneeies.

It lias the hind tihial eharacteristies of that species as well as the l.are nieso-
pieura. hut in violation it agrees more nearly with iilii4;i iisi.<. It is not possible
to s.'itisfactorily descrilie thi' specie.-.

A female in poor condition appears to he distinct from the previous species

.1,,. i.;...i .:i.: 1 i . ■ .■ .• . i . • ,. ' , . '

Locality: Nome, Alaska. Aufiusl 2t. 2."), lltlti ' !•". ,loliMn>eni.

BORBORID.E.

The larva' of this family live in maiiuic. fuiifii. dec.ayinn vejiet.ition, or.
rarely, in putrid water in which then is decaying anim.il or venelahle matter.

Several species are connnonly found in marshy spots, and 1 have seen the
imagines running upon t he surface of stajjuant water. In winter and early spring
some siM'cies occiu' under dry grasses amongst deail leaves, and when distnrhed
jump violently about much as do springtails fouiid in similar situations.

There is only one species of the family in the collection.

Leptocera < )livi<r.
The s))ecies in this collection seems !:> he uiidescrihed.
Leptocera transversalis, n. sp

Fkm.M.k (alcoholic s|)ecimen). Head yellow, ocellar triangle, upper half
of occiput, g' "I- poiil.m of third antemial joint, arista, and cly|)eus black.
Thorax bla -al margins, centre of sculellum, and the pk'ural sutures

broadly, yello is, \bilomen brownish black dorsally, venter largely yellow.
Kegs black, tiocha. ,s, .apices of femora, bases of tibia', and the tarsi yellowish,
ll.ilteres pale. Wings clear.

Ocellar triangle large, sharp anteriorly, extending over midway from
vertex to anterior m.ugiii of frons; orbital bristles three to four on each siile,
short but strong: interfrontalia with short setulosi* hairs, anteniue rather large,
third joint rounded ajiically: arista very much shorter than in typical Leptocera,
not twice as long as antemia, tliickeni^d at base, distinctly tai)ered. microsco[)i-
<'ally pubescent: vibrissa weak, genal bristle absent, the marginal bristles very
short; cheek about one-third as high as eye. Thorax with nmnerous discal
setulose hairs and otdy one distinct pair of bristles in dorso-cential series, just
in front of sculelimn: posthumeral bristles absi'nt : scutellum roumled, with a
few very short cliscal haiis and four moderately long marginal bristles. Legs
-lendi'r, without ;iny distinct bristles, even on femoia; hind tarsi with basal
joint twice as long as second. Wing venation asin PI. \1 1 1, tig. 20, differing from
that of most species of this genus in liaviirg the cross-xcin- very nearly directly
below apex of first vein.

Length, 2-.") mm.

Type Locality: I'ond ,il ( 'ollinson point , Alaska, .luiie 115. MM t i F. .lohanscTi ).
Two s'lecimens.

T. is species dilTers so strikingly from others in Leptocera that it might be
placed in a new genus, but as .several workers are now engaged in revising the
family I prefer to leave its removal from or retention in the genus to their decision.

SVRFIUD.4i.

The larva' of the species in the present collection are either aphidophagous
i.s'i/r/»/)i/.v, etc.) or feed in sewage or decaying xcge'able matter such as is found in
>w;impy |)laces {IliUiphibis].

"^ '' Cfin,i,l,a„ Arrlic hhp ,l,li,„i. lOLl-IS

Melanostoma S« liincr.
'»■'"•'••• ••'-" at Last two s,„.,.i,..s r.-f..ral.l.. „. ,hi.s k,.„„s i„ th,. .•.,l|,.,-ti.,n.

Melanostoma trichopus Thoms,,!!.

Melanostoma, sp.

Melanostoma, sp.

l-.Hi; hairs al.scnt <.,, th.- f.m- ini.ViVti i ',■''''''''''''''•"' ''''^'''K ' •'<'

n.Ha,arsil..sssw,.llo;, , s;'i''":nlK^^

..uK.';;:;ls.'!;!:";i;;;,^;:i';"-' "■''"'•'■■ --• ^--'i"" ^t.ai,, xo,.,hw..st T..n.i,..n..s,

Scaeva Kahricius.
Scaeva pyrastri I.iniic.

.l/.(.vy/ /,,ym,v/,-, Li,,,,,.. Syst. Nut., i:,|. |(), ,,..-,19 17-^

™''™"™™.3:™;Ss':i^i;if;:;;;™||^,,f '*:'-■•' '''"■"«iv.

ins;:;,,;*: ^ '- '< • - '■ :i;"i;""-i:.".i'\;:s"Mr"iV'H;s

Sphaerophoria cylindrica Say.

S,,r/,h,<.. ,■,,!, ,.,hir„s ,S„y. .\,„. I,,,,., v„l. 1, ,,1. II, ISL't.

.-^ ■■^'"Hl'' '".•"!'' spcciinoti fiom Hcrschol island Viikm, T,.....;,
Airtic ('(.ast, .Viiiriist \•^ 11)14 ,lifT,.,.< f,.,„" t ,1?" "'"<".v, Caiiadiaii

lourtl, sog,„,.„ts ,,„.!. with a .,•,«.,,,.','"''■'"« l.e .s<v„„,|, ,l,i,,|. .„„,

fifth s,.K...,-„t with two s , d ;:,.,",.,'; ',7'!r'7 •^■'■"*'"- ''=^"''' '"■•' "'«■

Syrphus sodalis Williston.

S„r,,lu.. s,„l„li, Wmisu,,,. Sy..o„. \. .\,„. ,<yr„l,i,la., p. 7-11 l.ss.i

spo...;^:::s -ir'r pn::.,."'';^"^;.,;':;;?;^:: j'^"i,-^ ■•"'"-■- ''-•-- -'^ throo

;;-.;..;;.,.. taL,, w.. J^i^o-;-i;;TL:S"q.,X.^'t;:: ^^n/Zi

i.u'ntioncl ..xainplcs. ^ 'itsHnctly rod.hsh at haso i„ the two last-

Dipli

55 c

Syrphus sodalis, vur., interruptus var. n.

A female taken werit of KoiiKenevik. Caiiuleii hay. .Vla?<ka. July I. IIMI,
(lilTers from the oilier specimens in liavinn the aliilominal yellow marks much
smaller, the hasal sejjnient having two short, spot-like marks which do not ri'ach
the lateral margins, and the other segments having narrow, almost linear, marks.
The atiteniue are entirely Mack, an<l the tihia' yellow. In other lespects coloured
as type form.

Length, H nun.

Ilelophilus Mei^en.

The larvu' of i
(lecayin^j vepetalile

ipecies of this jieiins are as far as known found in mu<l and
matter in or aioni: the marjtins of ponds or streams.

Ilelophilus dychei Wiliiston.

Ihioiihihi.^ iljirini Willistdii, Cm\. ImiI.. veil. '.".I, p. Ili.'i. lS!t7.

Two specinn'iis of this sjM'cies are in the collection from Nome, .\laska,
.^Udust '1\ and 2.j. HUti. and in that from Bernard hailmur. Northwest Territoiies,
on Driiax flower, .luly ti, Udti ( K. .lohansen).

The s|)ecies lias previously heen recorde(l from .Alaska. Iiein^ oritiin.ally
dcscrilied from Sitka.

OESTRID.E.

Only three imagines of this family are in the present collection, hut there
arc a nuinher of larvse of two s])ecies.

Oislnix l(inu((li I.i

(Edemagena tarandi (Linnc.)

Kauni' Succia, p. I'M, 17()1.

Fkmalk. -Three females of this species were taken.

The species superficially resemhles nijixxhrnm linvntit ])e X'ill., iiut the
distinct pal|)i. and larger size, l.l mm. in addition to the ditTercntiy coloured
ahdominal hairs readily separate it from that species. .\ hrief descripti(ui of
the siiecies is (liveii as few descriptions in JOnRlish are availahle to students.'

Head hlack. apex of second antennal joint and arista hrown: hairs on froiis,
parafacial, and the upper half of face hlack. on occii)Ut except aloli'r margin
of eyes, on cheeks, and lower half of face pale yellow; palpi and ijrohoscis lilaek.
Thora ic dorsum witli lon^;. erect, pale yellow hairs in front of suture and on
l)ostalar callosity, with hlack hairs caudad of suture; disc opatiuc hlack, with
two suhmeilian linear vittae in front of suture which are evident hehind suture
as two small spots, and ith tw.i hroad lateral vittae hehind suture which are
present in front of siitun as two small spots; jileura and scutellum with long
pale yellow hairs. .Ahdomen with long pale yellow hairs on first segment,
and similar hairs of a hright reddish orange colour on segments 2. .'}. and 4
hoth on d<irsum and venter. Legs hlack. tihiae excei)t hases. and the tarsi
tawny; all parts with hlack and yellow hairs intermixed, the ))ale hairs longer
and more conspicuous at liases of femora and on ajiii'td halves of tihaie.
Posterior hasal cross-vein of wing distad of anterior; fourth vein continuing
parallel to third for a considerahle distance heyond outer cros.s-vein hefore
curving forward.

Localities: Teller, Al;iska, .July 31, 1913; one .specimen; Bernard Harhour,
Northwest Territories, July 14, 1!)1(), two specimens ( F. Johansen).

Larv.e. — I identify as of tliis specie- larvic taken from '.m^ler the skin of
Barren Ground caribou. The sjiecies was originally described from northern
Europe and has been recorded from Alaska. The recorded host is the reindeer, but

^ Fi»r .-in ai-count of (Edi'miifjt'na tnninli s(m*< r. H. <'iirp;^nt^'r. Tonoa. Ki-jn. liio!., vol.. 5, pp. l4!)-l.iH. 1 9 10,

")() «

Cnnndiiiii Airlir KxfMilllittii. HH.i-tS

all of which were taken from

I have no (loiil)t that the spccinicu-i Itcforr me
caribou, tx'loiin to liunnili;.

Localities: Head island. D.lphin and I'nion strait, soiitliern side of
Wollaston peninsula, Victoria island. Mav 4. Htl.') ( I), .lenness) • Bernard
harbour. Northwest T.Tritories. May 21. MM.-) and Hichardson sounil. Corona-
tion Kulf, between Richardson island and Victoria island. March 21, lltKi (F.
Johansen).

The niotith-parts of this species are very much abort<'d, the chitini/.ed
hooks so i)roininent in the larvie of (lastrophilu.-t being entirely absent. The
only chitinized portions of the cephalopharyuKeal skeh-ton that 'l fin.l bv dissec-
tion are two short rods that connect with the oral oi)enii.K on its sides, and a
poorly chitinized plate which covers the upper portion of the mouth and shiehls
the openinn of the oes<.i)liaKUs. The larvie of Ilnpodcrma and those of this
Kenus are very similar, the only noticeable distinction beiiiK in the spinal arma-
ture of the body— the si)ines on dorsum of llyiKxInma beinn much stroiiKcr than
those on V>-nter, whereas in (Kdeniafiemi they are '>f ecpial slreuKth.

The anteiuia- in (Edtiiimjina are small, their ba.ses blackened, the distance
between their bases about four times the width of their diameter; immediatelv
above the antenna- there is an irregular transverse series of strong thorns
the bases of which are black and the a])ices vellow. Each segment has a circle
of strong backwardly directed thorns anteriorlv and another of much weaker
forwardly directed ones posteriorly, both of which are interrupted at the trans-
verse depressions which run the entire length of the body. (PI. VIII, fig. |7)
Posterior spirai'les large, black, narrowly separated, structure as in I'l, VIII^
fig. 14, the minute i)ale dots more regularlv rounded than in drawing

I.«'ngthin finalstage. 2.')mm.; width. 10 12 mm.

Cephenomyla Lat

reille

■\ l|

Ihere an' sevi-ral larva' of a si)ecies from the nasal passages of caribou
which 1 i.hntify as b(.longing to this genus. I can not identifv the si>ecies
fn.ni t he material before me. but jiossibly it is uiidescribed in the imago .stage.

Cephenomyla, s]).

l.AUVA. \yiiiti.sh testaceous, the spinose armature bhick or black-tinoe.l ■
|)osterior spiracles and mouth-hooks black. A f.'w (h.ts .>n segments of ab.lom.'n'
most conspicuous and numerous on ajiical three segments. '

IJody much more sh'iider than in (Edcmmima. slightlv taiiered at both ex-
tivmities. Mouth-parts well developed, dorsal view as in Pl.VlII.fig. Hi, the hooks
ong and ^M-r. .'Urved. and sharp at apex. Kacli segm..nt of bodv with stout,
backwardly dire.'ted thorns on anterior hidf; posterior half of each dorsal <va-
nieiit bare on greater i.ortion of its width, with two small oval sw.-llings „„
each side, caudad of which there is a transverse series of .stout thorns- niesad
of thes,. swellings, on each side, there is anoth.T. less conspicuous swelling
behiiKl which are no thorns: ventral segments similar to dorsal, but the s„l,-
iiUNlian swellings ar.. as distinct as the lateral: posterior spiracles in a verv
distinct depr.'ssion, the ujiper ;ind lower margins of the segment produced
the latt.T very decidedly elongat,.d. and both evidently eapabl.. of n-traclion
so as to shield the spiracles; caudal view as in PI. VIII. fig. IS.

Length in final stage. ;i() mm.; width. 0 mm.

Locality; Bernard harbour, Northwest Territories. May 2."). 1»1G (F. Johan-

The larva' closely resemble specimens before me named bv ('. H T Town-
send (,phen„mum pratii Hunter. They differ, however, in having on
most of the ventral abdom.na! segments a small m.'dian raised area, cephalad
01 tiie t>ri)ad i)aiid of -■ ' ' ' '■ ■ -

iniii's, upon which there are several strong spine.«. Vlu^

hiplfin

.»( r

ponultiiiiiit)' ventral srniiunt in tlir antic s|)<cic^ \ms mure nuiiiirniis mittrior
opines than lias itnittl. and tlicrr arc several spines aloiiK the lalero-venlrnl
inarKJn whieh I ilo not find in the latter. The apiral spines are niiieh nii.re
r.uineroiis in the arctic species than in pmlti.

TACHIMD.€.

The larva- of nearly all of the species of this family are internal para-ites
in other insects, mostly in the larva- or pupa'.
Tiiere are only tW(» specio in the collection.

Euphorocera ftelida ('o(|uillett.

Knithiiritiiin ijiliiln ('iM|iiillctt, KcviMiiii ef the r:i(tiiiiiil;c
.\gr., Hiir. Knt., p, l(»l, 1H97.

■l"c(li .Sr . N.

I

Dipt,

in the collection,
mil from the original <lescrip-
In other respects

Tliere are thirteen specimens of this speciei

Four of the sju'cimens ditTer from the other
tion. in havinn only three ])airs of postural dorso-ci-ntrals.
the specimens of hoth lots ajtree perfectly.

Pinni'il with several of the imagines is the emi)ty pui)ariiim from which the
insect ernerKed. .\ comparison of these puparia with those of Kiiiilutniam
dnripcnnix Macijuart shows that the two s|)ecies are not congeneric. The
characters of the i)ui)ariun) of gvUiln are as follows:

Brownish red. suhopaepie; posterior s|)irach's Mack-margined, >{l<>ssly.

Surface microscopically, transversely striated; incisions hetweeii senments
defined liy a singh' series of short stitch-like impressicms; each alidoininal
segment with three small de))ressed areas on centre of side, in eacii of which
there is an irrejjular line of minute elevations visible only under a hijih-power
lens; no respiratory elevations jit base of abdomen ; anal opening minute, consider-
ably proxinuid of apex of abdomen, surrounded by a i)oorly defined uranulose
area; spiracles lar>te, slightly elevated, esiu'cially ai>ove, general ai)i)ear,ince and
slits as in PI. VIII. tig. 15.

Length, S it.") mm.; width, 3 ;}-7.") mm.

The i)upariuin of chiripvntiis ditTers in having the posterior sijiracles willi
openings very pronouncedly sinuous, almost \V-shai)ed us in .MuscidiP. the
segments with distinct though miscroscopic locomotor spinules, and the respira-
tory organs at base of abdomen in the form of stalks.

Locality: The si)ecimens of ijiliihi are from Camden bay. and Demarcation
point, .\laska, June and July. 1014 (F. Johansen).

The i)uparia were from inside of the cocoons of a le|iidopteron. Dnsiichinix
sp. (?), sometimes as many as six in one cocoon. 'J'he record- sjimv tiiat liii' larva'
of the host do not succeed in pupating. (Hearing 1(1).

Peleteria Kobineau-Hesvoidy.
This genus is represented in the collection !iy a single female,

Peleteria arctica, n. sp.

Fem.\le. - Black, shining. Head black, cheeks except near posterior margin,
face and its sides reddish yi How, densely white pruiitose: interfrontalia reddish;
orbits black, shining, but obscured by grey pruitiescence: antenna- and arista
i)iack; prol)oscis black, ])aipi ferruginous.

Thorax slightly grey pruinose, not tlistinctly vittate; scutelluin reddish
yellow. Abdomen black, slightly grey pruinescent on bases of segments; sides of
second and third segments broadly reddish. Legs black, hind tibia- re<ldish.
Wings slightly greyish. Calyptra- white. Halteres dark l)rown.

..« ••

('iinniliiiii Airlic Hxprililinn. l!U.t-IS

Frorw lirUtlcd «■< in rohuxUt; rlii-ck with fmir wcll-iiitTfrfiitiiitcd liristirs,
fwi) (if which an- riiiich stmnncr than tlir DtinTJ*, thr normal hairs stntnn: tli nl
antcniiiil joint very htlh'f<hort(r than second; arista short, thi(krn<Ml to distinct-
ly hcyond middle: profile as in PI. \ HI, (ij{. 21. Dor.so-centrals irrl•^"lla^ in Ivpe,
three slritnu •>ii<''* '>» <me side nid three strong and one weak one on the other;
three >ternoplurals. Alidomiiial senments two to four with discal nmcrochaeta-.
Wings as in ruituala. Fore tarsi dilated.

l.eiinili, '.•■7")nuu.

Type l/ocality: ("ockhnrn point. Northwest Territories, ( 'anadian .\rclic
co:lst, .Septeml)er ."), I!tl4 I !•'. .lohansenl.

The only species I tinil record of from the arctics is mtuM Staenc'r.descrilted
from Creenlaml. This species !■ -s the alnhimen entirely Mack and is apparently
distinct from orrlicn.

C.M.LIPIIORID.e,.

This family cimtains a numl)er of (jenera the larva> of which feed normally in
carri(m. The (lies are jiopiilarly known as Hesh-flies, hlue'iotlles, and hlow-Hies.

()ri)jinaily the genera now included here formed part of the family Muscidu-
liul within recent years the Ititter has heen divided, several families now contain-
inuKcnera that at one time formed jiart of the Muscidu'. It is at present, accord-
ing to some entomologists, a dehatahle i)oint whether our c>)nce|)t of the ,\Iuscida>
shonlil not he revised to the extent of applying the name to what is now called
.\nthomyiida' and dro])pin(t the last n.anie entirely. With this view I do not
auree. hut the present paper is not the proper place to discuss the (pn-slion, more
especially as there are no true Muscida- in the collection.

Cynomyla Hohine.iu-nesvoidy.
There is hut one species of this (jenus in the collection.

Cynomyia cadaverina Hohineau-Desvoiily.

''//'""".'/'" niilnnriiiii Hdliiinaii-Dcsvuiilv. Fssai siir Ics Mydduiris, p. M'u,, IsHO.

Twenty-four specimens with data as follows: thirteen specimens. HerTiard
harhour. Dolphin and Inii-n strait , Northwest Territ or' , May, .lune and .luly,
H>1.") and l(»l() ( F. .lohansen); six s|)ecimens, Harter isia .\rctic coast of .Vlaska
.Iuni\ 2(t and T.i. and .luly 2, l<tl4, and .lune I."), I'd I . .cnness) three speci-
mens, west of Konjjenevik, Camden hay, Alaska, .Fu 4, IfUJ and two speci-
mens, Nome, .Vlaska, August 24, 2.'), l!»ii» (F. .Johan.se.i).

Calliphora Hol)ineau-I)esvoidy.

There is one species in the collection, represent(<l hy threi' specimens,

Calliphora viridescens Hohineau-Desvoidy.

CiiUiiilii.ra iiriili:ici:iiif Iloh.ucaii-Ucsvoiily. K.s.sai sur Ics Myiiliiircs, p. ."hfT. lS:jO.

This sp- -ies occurs in l^urope and North America. Like the jireceilinR
siM'cies it is lerally distril.utcd throughout North America, and has been irn--
viously recorded from .\laska.

])ata on specimens: Nome, .\laska, June 21, liUU ( F. .lohansen).

Phormia l{ol>ineau-De.-,voi«i.\ .

There are two species in the collection, one of which, ternF-nnvir, occurs
generally throughout North America, and has been reported from Greenland and
Alaska.

Phurmhi terrie-novse l{iiliitii'iii-l>i'>\<>i(lv.

I'ltiii 111(11 ii III -iiitrr l{iilnrii'iiii-l)iv.vi)ii|\ . K«i;ii »iir l<-n Myn l.nn-, \< 117. IViil

Tliirty-finlit spcciincris with datii ii> I'ollow*: -iximi -piciiiMiis, Hiricinl
h:»rlii>iir, Diilphiii uml I'nion striiil, Ndrtliwcst 'I'lTrilnrn's. .liiiii.Jnly ami Aiijju-i,
IJM'i; i>in' spcriiiicii. same liicality. July l(t. lOIti; riulii spiMinicii^, -aiiif Icnality.
Juiif anil .Inly. P.tlli; tlirci' spcciinrii*, Ndiiif. Alaska. .\u(£ii-t lM. ■.'■'•, Mtlii,
five specimens, Teller. Alaska. .Inly and .\u(tn.st. Illjlt; three >peeinien-. Cullin-
Hon pciinl. Alaska, .lune. I!t|4: two specinieh>. Denian.alion pdint. \la-k;i.
May i;{. lltH (K. .Inhansen).

Phormia cuerulea,

sp

MaI.K AM) KkmaI.K. Dark inetallie iiiue, WiIIk.iiI pniinescenee. Head

black, trims o|)a(pie. urhits slightly shininu; third antennid joint sometimes
hrowiiish: palpi yellow usually ius. ous at apices in male. Dorsum of thorax
with two slender, widely separated vitta' on anterior portion mesad of ilorso-
rcntrals. I,e)£s Mack. \Vin(£s cle.ir. slinhlly infusc.iteil at extreme hases.
8(iuania' lirown. Halteres fuscous, ])aler in female.

AIalk. Frons narrowest at centre, where it ii. on<'-fiflli the head-width,
orhit at widest part, ju>t lielow ocelli, narrower than iiiterfrontalia; oriiits
hairy, hristles dilTeri'ntiated l)ut not very strong; arista rather short-plumetl.
apical thinl hare; profile .as in Plate VIII. figure Hi. '['hiirax not so noti.'calilv
depressed as in other species, the postsutural dorso-ceutr:d< sometime> well
developed, the posterior pair usually so; Koth s)iracle- very lar^e. the prolhoracie
one I'Xtendinn from close to upper marnin of ileura to within a short di^laiicc
of i-oxa. the covering of both spirai'les deep Mack: lower maruin of anterior
spirjiclc with many lunu bristly liairs; upi>er calypter with lonu hairs on upper
side, when closed, !Iy])o])ynium small: fifth sternite as in trrni-niini. Legs
a.s in Irrnt-iKirir. Inner cross-vein very little proxima<l of apex of first vein:
outer cross-vein li'ss di-tini'tl\ curved than in li nn-iKini : foiuth vein almost
rectaiiKularly bent, usually with a short aptx'ndicui.ite vein at .alible.

Fkmai.k. Similar to the male in colour.

Differs in structure by having the froiis two-fifths the he.id-widt h. the orbit
half as wide as iiiterfrontalia, with two distinct supraori)ital outer brisiles.

Length, (i S- ,"> mm.

Type locality: Hernard hari)iiur. Northwest Territories, .May "JL
(F. .lohansen). Paratypes, same locality, May, June, and ,luly, liM."),
(F. Jolianseu).

This species resembles ]'hi>niii<i li irw-nofn very closely in some re>])ects,
hut is undoubtedly distinct. Zetterstedt describecj a species from (ireeidand
un<ler the name [irmnbtnilicit. which has been sunk as a synoiiyin of Itrnr-iionr.
As both s|)ecies ])robai)ly occur in (Ireeuland it is not possilile to decide tlie
validity of the accejiied synonymy witluut an examinalion of the type of
Zettorstedt's s|)ecies.

The appended key gives a summary of the distinguishing characters of the
species.

i\i;v TO Sl'LClKS.

l!ll.-)
I!)l()

Kycs scparatcil l)y a narrow lino; anterior thoracic spiracle with ycllow-hairc<l coviriiiu-

tt'I'^ nijinn Mcijjcn.

Kycs Si i)ar:itcil al)()Vc by a space at least twice as bro.ad us ilixtance ^trniss jwutcrior <Kell!;

.•interior llmraiie spira<li' with hiaek-liaireil coverinK-Haps 2

Narrowest part of irons ai)oiit one-half as great as width of eye seen from above; anterior

thoracic spiracle very large; outer cross-vein of wing very sliglitly eurvetl rmriilii, n. sp.
Narrowest j)arl of frons not over one-foiirlh as great as width of either eye; anterior

thoraiii- spiracle not very large; outer cross-vein of wing abruptly henf

Iirnr-niirir Uohinean-Desvoidv .

tiOc

i'liiiiiihiiii Aiiiir Hjjifhlinii , llil,!-IS

1. Ai, .riur ...r.. u ,,„r,.r .■ with y.||„« .|„„rnl ...vrnnK-tl,,,, ,„|v,„n. «|,i. ,,„„ M..,g,T,

" '|r.(i"l'."I' ',, 'P ' " " "'""" """•'"" "- ""''■ ^'^ Hil.rfront .Im. l,.... ,„„. I,
.\..t.r».r ,,„ru .,- vrry lurjcr; ..rl,.l I... ,l,».. .;M.-,(„r.l .- «,.l.. ., n,..rfr,m.'ulm"l..''l..w''
.-.l.Tior . hi i.T ,n,»l..rM..-ly pro, „| |„.|,,« /,,r„-m.,,r Hohm.-im-I V.v..j.lv

ANTIIOMVIID.E.

' I '.ilv :inin riKi-t 'jim'!* cii i,.r >cu\ triKcr- or |>livlii|)li!nti.us,
giiiK III till' li.rtii.r .•iit.({'>r.v. A few i.-m ■< jir.' a<|uatii'

Till la
the (irralir i i

in tl... I.Hva, t .' r, ,,;,, .,,,^,.,, .,„.l „,„„. ,„ f|„. |,r,.;,Mf r,,ll,vi,., li.lV.V.K'tirt'lVw

jfriiiip. ^

Th.> UtUiy ,:,■" .., • K,.,ni^ / nnltm. ami l|>u>r ,, tl... Hilitaiuilv < ,.nn-.iimo

"■■'' l'i-"«la.T.iu^ ,'•,..■ |„,ii ot u-r ip-nl .. ,.s|H..ialK l)i|.Icra.

I .•iTiitl: f , .,i,. , ,, ttir Mil.fatriili.s „f Aiitlumiviiila- in 77(.

,""'"'"'" f ' '■ '"" !" • • '"='>• '"• UM,..I l„ a.lvanlaK.. in ri.nnrNiM,, witl.

U..' |ir.-.M»t :m r,- ,; ...(.Ts u-c.l in tlir I,. V art' tlic lKi«is for tl,.. Mlli-

taniilv Krmil'i ' i.i t! i >•.'

U tun 1,1 In- K... .,lt will, in ll.is i.ap.T ar.' n.iw (l.'s,.ril...| f,„ th..

!rtli!' nrw flln. -■"'''" '■ ''' • '"■ *^'""'''"" ''*'"'' "■'''' "' "" "''' "• ""' '■'•'"KKm.Mi

\\K1~- III (Ikmhv llf I'llAllVISf; IN I III in riUN.

-.'If
V

llmil tilMu w,.h ;i 1„,,„ |„-,.Ui. hi.vimii na.l.l ,(„. ,Hist,.r.Ml..r.,,l ^nrhirr I'h., «

"""Un;:::::';;;;:;:!:;;;;;;;'^;.!:;;;;;''- - '^"•-•- - "- -■■ — i -r ii.n„,K ,„ . ^

lllihl libiu V 111 ^rvi-ral l.mu l)riMli> ,,» I).lsll•rlK.l„r^al Mirfan- ",

Ihnil iilii:. vMil, ;,i iii.isi ,i (Vw -lii.ri l.riMlrs on po^trro-ilorsil Mirljii-r l

'■""iitMoini"-:;'^^:?'; ' ^ r v■='^''^"'^^ ^'■"•■"'" — '- '->,../;?;;;;;■?:::;"■

our joinl> ot ton. taiM uith loiiK l.ristli-> :,i „pi.i- vnitnillv l;^„.n„mm,i

. Ji>> «..ak. I.mn -r.,1,. „f lalypim. Mit|.nii.iii.,| poM.iiorlv )/-/,/,„,„„

Ah,loni..n will, puiri.l spois on ilor>am;mHl tibia. uiilHwiMir , tin, ,H,s,i.ro..lorsai'hri^^

Litnnitfifinrit.

u"ii'..."'i '!'.!' 'T'""' '"■''"'; 'I'"""' ^'"■."■"■''' ■■'•'"■'""■ f'-'""^''^ ^'i-i't

pnli.n, "'■'■ '""■ "^ "'" """•-■•''i'^'' ''^i^"- •I'r-if.l lonvanl: ..ninal.. fron.als

•'"•■Itil'ia. with loMK |,n.upii.alpost,.,o-ilorsall,n>,l,. I'I.„.,„J

"""'l^:'::;,"'" ' ■' '""«• '"•- -' l'-t<Tii-.l..r.i! l.nMl... -..,,.,.1, a fi.w ^lioii hnX

'''■' o/fn!!?;:; !.,:,!:/'ol;;^^;,:i''"''''^ '"-"•- ■■■ •-' -•"- "-■■• -'■•■..■. .... ......r ,.,.„',

•Wilts liairyia- aInioM haiv. with orilv oml ,..ri,.s of hristli-s UW""",

Mill lihia. without -hurt liristlrs on iiostiio-vioir-l -...rf...... , . '

M,.i ui.ia. will, oni. or two hriMli.. ,., p.Mi.r-v.nVral^uHa,.. , ""X-n:.

1 iiopinia liairy on icntri'; antirior intra-alar liristl.- iibsmt /■ •'/'"".

lVr,.....ara bar... ra,..|y with a fow hairs on ilis..; ann-Aor uu;j:' lar b, m 1,. .^^i^^'-^^l^^t;,,.
'Can. Kilt, vol 4!t. n tIMl, 1<.»17.

1>I l>ll III
Phaoniu Hi.l.iri.iiu-Ur.vc.hh .

Ill

riir liirvif of I hi, uiiiii- arc v. rv littli' kiiouti. Th.' >|MTi.- ilmi | ivr Ih.-h
r.-iir-.| iin ..iiv.im.T- m lli.' larval -taRrv I.Tiiinu m <lf<-a\ iiiit vix-taMr inaCr.

I'hiTf arc -••vcrnl s|M'citiii'ii' in tUi- .(.llcitiuii that an' nl.ialilr i., thi- ij.iiii'..

ai-ci-pliinf us tl rit. li.Mi till' ( haracl.r lurni-lir.l l,\ ilir hri-tliim ,.t' tli. hirxi

ti))ia,

Phuonla minima, n p.

.Mai.K. Mlaik. ^liiiiiiiK. rii.irax III 1\ |)c -M lia.lU cru-li. .1 Iliil it i> inii,,--
Ml.lr to sav wli.'tlirr or iioi ii i> \iilat.-.' AImIoiiii,, vnth -liiilit |,riiiii,-.-.ii,-.-
ami a (lark ifiilral loiijjilinlii, ,1 -tri|ir l.,n> hlaik. S(|iiat>ia' ami lialtir.-
vi-llow . \\ iim> Mllo\vi>li hriiwii oil ant- rior halt.

Kvf.x hare, iiarrovxly Mparalccl ahovc. iiitirfidntMlia liiirar on ii|i|iir halt,
not \\j.|..r than orliit ; aiit.iniif >liort. third joint ii,,t twic- a« loiiu a> sriLiid:
iin-ta iiiicro>roiii.allv piilit -.•.iit on hartal 1 ■"': .-hck* liij{li. I.iit tli.- hiaii i- in
Milch poor <'oiiilitioii that their ariiiatiirc ai I coinparalisi- hciuht can not I"
(Ictinitcly iMcitaii^,;; palpi hn.ad.r ih. i aorinal. I'roiitiiral acro-lichal-
Ktrontt. with one to two -.Tic- of -hortcr hairs hciwnii the scries; po^tsiitiiral
(lorso-ccntrals four; pr.-alar Kn-tic \erv small; hvpopleiira and pieropl, iira
hare. AlMloincn narnnv, sul.evl^ndrical: li.vpop\ i;imii -mall, fifth ventral
.Hcl( nlc with a roiiiiiLiMl cxcavatioi,. the lateral eMeiisioiis -ni.all, i;l.issy at at)c\.
I.c^s rather slender, ! lie tar~; iioticcahly so. and e:.pe,iallv the liasal joint ,,i
fore pair: fore tiliia without hrJMlcs; niid tihia with one bristle near a|)c.\ on
|M.s|eri.T siirf'-ice; li.iid femora slinlitly curved, thickened apicallv. the apical
third on aiit.i.i- and postero-v. ntral -urface with a mailiiated -erics of loii«
hristli-; hind til.ia with Iwo ant< ro-ventral, oiii^ nitero-.lorsal. ami one loiijj
postero-dors.il bristle. Costal thorn small; outer cros>-vein sir.iiuht; last
section of fourth vein hardy twir. as loii^ as preceding section.

Kk.\i\i.k. Col ■ as in the male except that the wiiurs and c.dvplia' arc

lliore ('(111 |iiciliillsly \i'llovvi«h.

Kyes more than one iliiiil ihc heail-widlh. orhits shining, e.ich one-fourth
the width of iiiter-frontalia. orl.ilal hrisllcs normal, rather weak ahove, stioim
Ix'low; antenn.c as in male; r\v cks inie-fourth as hi|ih ,is r\r. invailed on lower
hall l>y the lirislle- of maruiii, those on inaruin of moderate Icn^'th. viLris-a^
well dilTereiiliatcd. one stronu hrisile lie|,,w \ilirissa. 'I'horax as in male. I.ci;-
.similar to th< -c of male I. lit the tarsi stoutci the hind femora less di-lin.ih
svM lien apically, anil with fewer Inisllcs.

I.ciujth. I .') mm.

Type Locality: .\<ime, .Vlaska. .\llnii-| ■_> 1 21. lid '.'.". I'.tlli I', .lohali-cnl.

Thi.s species is the smallest known to m.'

Phaonia imitatrix, n, -p.

Mai.K. HIack, disliii(ll\ shiiunL'. llioiax ami alulomcn nnin nkcd. Frontal
and faiial orhits uih dense .sjlvery pile; cheeks anil face very ^liijhtly pilo.-e;
inler-frontalia opaipic Mack. Willis -lightly fii-cous, noliceahly so at liasc.
Squaime while Hahci.-s l-lack

I'lyes hairy, separated >y alioiil one— ixtli the head-width, orhil alioiit one-
third as wide as iiiterfi<iiitalia, hiistles siroiu:. with the exception of the upper
hackwardly directed one, dircetcil inward: antennu' short, not exleiidin^ helow
lowi-t fourth of face, third joint 1 ■"> as lonu; as second; aristii siiliniide. with an
chmgatc tapered swellint!; ;i! h.ic; orhil- in profih' projccunu heyoml eye as
far as width of third antennal joint; rln . k as hiu;h ;is one-third the eyc-heinhi
protruding at anterior angle further than fron^ at ha.se of antcmui'. iiiartiinal
hristles numerous, of averane strcngih. a few weak hairs ahove margin; palpi

*l MLM

,=2Ti-*iJTa3ic -

(••_'

('iiiKiilidii Aictif Hxiiiililiiin, IHI.i-lS

iilioiit ,is loiin :is apical portion of prolioscis, slender. Dor.sinii of (liorax with
loiijj setiilose hairs; im-sutiiral acrostiehals lonjt hut not stronji, irregularly
four-rowed: postsulural dorso-centrals foiu-; prealar hrislle very l()iifj. Ahdo-
iiien narrow, sulicylindrieal, slightly tapered posteriorly; hvpopyniuni small;
fifth ventral segment almost, transverse apieally; (h>rsu"ni with st'roriu setiilose
hairs, apical and discal hristles on segments three and four. Lejjs stout; fore
tarsi similiir to those of Trichoptini.s, short, and denselv short pih)se ventriilly;
lore lihia unarmed; nud femora with slender hristles on postero- ventral s rface
which are longest on centre; mid lihia with two or three posterior hristles; hind
lemora with short bristles on hasal half ventrally, and an antero-ventral series
ot lonn, stout hristles; hind tihia with four to five short antero-ventral, two to
three longer antero-dorsal, and one long postero-dorsal. hristles. Co.stal spine
sliort hut distinct; third vein hare, outer cross-vein nearlv straight ; last section
ot f(»mth vein less than I ■."> as lonp; as precedins section.

Length. 7-.') nun.

Type Locality: Bernard harhour, Dolphin and I'nion strait. Northwest
Territories, .Inly, IKIti (K. .lohansen).

This species resemhles in tijeneral appearance species of Trii hopticus, hut
the hind tihia" are not frinned, the tihia- of all lejjs are less hristiv, ami the mid
femora are normal in shape.

Mydaeina, n. nen.

(uutrir Chiinirtirs: Mai.k. Kyes distinctly se|)arated, narrowest part of
frons ahout one-sixth as wide as hea<l, orbits with lonjc hairs on entire length
fron, base of anteima' (o vertex; face and frons slinhlly projeetintt: antennas
short, third joint e(|ual in lennlh to second; arista tapered, second joint nuu'h
thickened, as broad as hmn. third much thickeneil at base, p-.-idually taperiuR
to a hair at apex, the pubescence dense and short ; facial rid^ses with moderately
lonn hans which are carried upward I;. If-way to base of anteima'; vibrissa-
poorly dilTerentiated from the loi.n bristly hairs; proboscis stout; palpi .slender.
l)orsum(if thorax with lonjj hairs amon^j which the (h)rso-centrals are hardlv
distinguishable; lower scale of calyplra- much larjjer than the upper, narrowed
posteriorly. AbdouK'n subcylindrical, with four <listinct dorsal .segments;
hypopynium small (I'l. I.\, li^. :{|); filth ventral .segment with a broad central
emarmnation (I'l. I.\, 2!l). I-<'t£s stout, with few distinct brist'es, ventral
surlace of fore tarsjil joints with den.se erect pile, the bristles sparse short, con-
fiTied to margins; [)rea|)ical dorsal bristle of hind tibia- absent or represented
by !i weak setula. WiuK venation .'is in Miiiliim. the veins wiliiout bristles.

Kk.mai.k. DitVers from tin- mah- in having the frons ne.irly half tin- head-
width, each orbit iic.irly as wi<le an interfrontalia and with numerous lonn hairs,
an inwanl series direcied inward, and an outer series, directed outward, lontji-r
than the others; he.ad in other r.spi-cts as male, but the arista is slitrhtly le.s,s
coiispKuoiisly swollen and less hairy. Thorax with the (h.r,-<o-cenlrals 'more
distinct than in male.

Mydaeina obscura, n. sp.

.Mali; and Kkmai.k. Black, op.-npie, the surlace obscured by brownish
priimescence. Calyptra- in male subfuscoiis, in feinali- vellowish'. Halteres
yellow. Win^'- slightly (tn-yish, subfuscous at basi-.

Head of male as in PI. 1 .\, fi(r. 2,S. Four |)o<.rlv distintjuisli(-(l postsutiiral
dorso-centrals present; disc of seiitellum hairy, mar(iin with four bristles; sterno-
pleura with one larK(- posterior bristh- and iiianv loiiji hairs. I.ejts with very few
bnstij- (hose on femora loiin bul h.tii-like, the tibia- without W(-il-dev(-ioped
apicid bristles, oni- ni-ar ap(-x of dorsal surfaci- of hind pair about as lonn as
diameter ol tibia; the bristles on tibia- tliat an- soim-times distinct areas I'oUows

-one on the ixw-tmor si.l.. :il riiiildic of foiv pair, onr to two on .•inlcro-vcntral
onr t(. two on ant<'ro-<lorsal, aii.l one to two on poslcn.-doisal surface of nii<i
pair, one on aiitcro-vcntral, on<- on antcro-.lorsal, an<l one <,n |M)strrior surfjirr
ol lun.l pan-. Outer eross-veni ni male at it.s own lenjitli from inner an.l at more
han tl.at length from end of (iftli vein, in female it is siitjhtlv more than its ..wn
lennth from inner, and at its own length from end of fiftli; last section ..f fourth
vem toiu' times as hmn as penultimate in male, thre<- times in fem.ale

Length, (i 7 iiiiii.

Type Locality: Bernard harbour, Dolphin and Inion stniit Northwest
lerritories, .lune, IllUi, (.ne male specimen (!•'. .lohansen). I'aratvpes same
locality Au^Mist I, !«»L^ ( F. .lohansen): and Colville mountains,' Wollaston
pemnsiila, \ ictoria island, ,luly 22. I!»l."> (I), .h'liness).

In the collection I find one larva, and several puparia that .-inre.' with the
pupariuiii mounted on the pin with the tvne specimen, 'i'hese puparia ' IM I\
|in. 22) differ from any others in the familv that I have seen. Descriptions of
larva and puparium follow.

L.\KV,Y Whitish testaceous. ( ■ephalopharvnueal sk<-letoii. locomotor
spines, and posterior spiracles Mack.

(jeneral form similar to th.ii of Aiithomviina' l.ut the apical segment is
shuhtly more elongate, noticeal.ly tapered towards apex, and the spiracles are
pechmcuhile, and situated upon two roiiiKh-d flesh v elevations (l>l. IX. lijj. 2."))
Antenna- verv minute; eephaloiiharynneal skeleton well deveioped, mouth-
hooks paired, lonjj and slender (IM. IX. fig. 2tj. I'rothoracic spiracles not
iped: body very minutely striated, the senments well dilTcrentiated-

Ji. iiisiform .area well defined; <'ach .senmenl except apical with four short

dev(
lati

laferal longitudinal series of dark spot-like inarkinns showing throiitjh the skin
111. I.\. tin. 2I>); apical seumenl iinm.-irked. anal opening at anterior margin,
with a p.-ciidopod-like i)rotul)eiani'e on each side which is al)(.iit as lonn ;is its
basal diameter, taper d apically. and armed at apex with nuin"rous sliort
thorns; the ventral irfa.-e of each of the other sennients with three short
transverse series of dark s|)ots. about three in niiiiiber, the two outer situated
at middle, the central one slijihlly ceph: hid of th. •; locomotor spinules on all
except a|)ical senment not noticeably i-lcvated.
Length, 10 mm.

I'fi-AHUM (I'l. IX. fig. 22). He(hlish brown, .slightly shinim:. p<.steiior
spiraciilar region black.

Surface minutely transversely striated, and with much less distinct and le.ss
regular wrinkles transversely on segments; anterior spiracles not distinguishable-
thoracic segments much less distinctly striated than abdominals. :ind with
microscopic locomotor setiiLc; each abdominal segment with an oval clump of
short blai-k thorns on each side of median line on ventral surface, on each side of
the incisions also with ;i band of more minut(> spinules; antepenullimate segment
much eoiiHtricted ami more closely and distinctly longitiidinallv striated than the
others; anal opening in the form of an elongate slit
which encloses a broadlv rounded dark

slight rim

surrounded liy
''|-own area I .") times as wide as long; on
each side of till' .inal opening .iiiil at a considerable dist.-iiice from it there is ;i,
small clump of short, black spines on ;i slight eminence; posterior spiiai-lcs
elevated, surrounded by a coarselv granuiose biackcne.l area, the openings sneill
assliown in I'l. IX, fig. 2;{. , ^ ,

Length, I2-.") mm.
'I'he larva- liv(- in ponds :ind are truly acpiatic. The |)rincipal charactc-ristics
of t i(- larva- are the clumps of locomotor spines on abdomen, the ps(-udopod-like
anal locomotor organs, and the absi-nce of protliorai-ic spiracles. The caudal
part bc-yong tlu- constriction in ("upaiiiim is not occupied by anypart of the
enclosed imago after the indiinition of the larval skin, and forms aii air chamlier
which .serves to keep the |)iip:iriiim at the surface, tin- posterior spiracles being in
this position :ind so held that they li.-ive din-ct contact with the atmosphere.

<;»

Ciiiiiiiliiui Aiclir Kjcixililiiin, I!) 1,1-1 S

Joliiiiisni ill his notes sketches one of the pupiiiiu so curved that the ce|)liaUc
cxterniity extends to or ahnost to the surface, which is assuiaaMv the position

i'" <liately before the eniernence of the iniano, hut ail the ernptv "puparia in the

collection arc nearly straight. (Rearing 78).

The pupariuni of ////</( o/^/ior/o, an aipiatic (j«"iiii'*. i!< "ot conspicuouslv
dissiinilar from those of terrestrial Aiilhoniyiida', showinjj no caudal modification
or specializalion such as is shown in the present nt'i'iis.

The irnano hears a rcsend.lance to some species of .l)(f/(/, l)ut dilTcrs in
having the facalia hairy for a ^reat'-r length ahove the vihrissa', the third anieimal
joint much shorter, the under s<ale of I'alyptra- much narrower, an<l the fore tarsi
without spines on ventral surfaces. Tlie female resembles .[r;,iti also, hut has,
in ;idditioii to the ditTerences pre.-ent in the males, the orhits much more hairy,
the upper portion with a douhh' .series of lonn, hair-like bristles, tlie outer series
directed out over the eyes.

In some respects the >£enus resembles Tiichnphtliiciis. especiailv in the
character of the fore tarsi, hut tlie tihiic in Trichophlhinix are stronjjlv spinose.
the third antenna! joint is nnich longer th.an the second, and tin hind coxa'
have hairs above at apex.

Aricia Hobineau-Desvoidy.

I refer one species in this collection to this fjenus. although the male difTers
in manv respects from the nenotype, and in general habitus resembles Trich-
oiiliciiK Hondaiii. From Trlchoininis the present species differs in iiavinji the
posterif)r coxa- bare above at apices.

Aricia borealis, n.

■^P-

M.\LK. lilack. shining. Interfrontalia opacpie black, orbits silvery pilose.
Thorax very sli(;litly jireyisii priunescent. not distinctlv vittate. Abdomen
when viewed from behind, with brownish priiinesceiice "and a black median
longitudinal stripe. I,ejis black. Wiiifjs slightlv grevi.sh, fuscous at bases.
Siiuaiiiii' yellow. Halleres black.

Kyes l)are, separated by about one-seventh the head-width: orbits linear
above, not one-third as wide as interfrontalia at its narrowest point; antenna-
short, third joint I •.") as long as .second; arista almost entirelv nude: cheek with
many Ion;; hairs: vibrissa poorly ditTerentiated; orbit in' profile projectiiiK
beyond eye farther than width of tliinl aiitemial joint. I're.sutiiral acrostichals
irregularly four-rowed; postsutural dorso-centrals four in niiiaber; prealar
bristle weak but distinnuishaltle; sternoi)leiira with lonn hairs and two strong
bristles: pteroplcura and hypopleura bare. Abdomen subcyliiidrical. slightly
t:i|)erinjj to apex: fifth sternite with small rounded central excavation in posterior
iiiartrin. Fore til)ia with three to four bristles in a single series on apiial third of
postero-vcntral surface; nii<l femora slightly attenuated ajHcally. with two to
three long bristles at base on anterior side; mid tibia with almost the entiri'
leiitith of the jjostero-dorsal surface with short bristles, two to three im posfs-rior
Mirface. and three to four on postero-veiitral surface beyond middle: hind
femora with bristles on entire lenjjth of antero-ventral .surface, the postero-
venl.al surface unarmed; hind tibia slitrhtly curved, the apex on ventral siiie very
distinctly produced, anterior and posterior surfaces with short, rcmilar. sctulose
hairs, tho.se on postero-dorsal surface lonnest (I'l. I.\, fig. 27); hind tarsi with
a pair of bristles at base of first joint noticeably longer than the others, i.ast
sections of third and fourth veins parallel; outer cross- vein .slinhtlv curved, last
.section of fourth vein 2-.") as long as preceding section.

Length. 7 .") mm.

Type locality; Hernard harbour. Dolphin and Fnion, strait. Xortliwe-t
lerntones. .July, l!(l(i ( F. .lohansen).

hi litem ,)_- ,,

„,, ^Vith the mal.. ar." s.-veral f,.mal..s whirl. I cmsi.hT t,. I„. „f this <,„M-i,..
1 he (h'scnptKMi IS as follows:- IMd. >.

e ..0.!?''',?' ''•'^'''^♦'n'J'v ^'''"'"K <»'«n the n.alo, the thorax v.tv .lenselv pruin-
hrnJlv '''■'■' ^^'J '/"■" ""'•'•"^^■. 1«'<' Rrey vitta-, at..! the' lateral n, .rR ns

Froiis,
anteriorlv. e:

at vertex, aiioiit two-fifths the head-width,
■ach orhit at middle ahoiit one-third
surfaee with many short hairs, fi

oni

lightly hroadeneii
as wide as interfrontalia. the

14 111- ,, ■'""' '" '^'-'^ ineurved bristles on lowt"- T>ortion

and two shghtly omwardly-direeted om-s on uj.per portion; eh,.eks ' liL.""
nm,Vl '""'•■""';■'♦'' '-^Y f-,*'""-^ ''"'■•^ =^''"^- <>'' '""rKinal bristles T o mx
ir \'''.'-y,-''""\-"V''".r!"'''' ""• "^•■•'''"- '-"^tl" ^''-'"t. Abdomen pointed
at apex. Hristln.K ot the tib.a- very variabl,-, fore pair with zero to Ihre.- pos-
terior and zero to three postero-ventral bristh-s. and verv ran-lv one antero-

S:::^';,"';:l,rv:j;:i!:!"^..:^:'I'V':"!':;^"'"- y"^-'' *-' t<. four anten,:do;j;:i.

hree to ..ur postero-.iorsal. and thr^e,;, f^ur j;;.;;:^ -v n^ . i'^e^'hin i

orsj nr ■■"'" '"' '" ^'''" '""'^""^ "" ''"^"^"-v'.tral. antero-dorsal and p.istero-

Loealiti.-s: one speeimiM. with .same data as male: one spe.-imen same

^orthwest lerritor.es, .Inly IS, l<»I(i; one speeim..,,, ea).,' Bathnrst. Northwest

Alaska, ,)n\\ 4. I!tl4 (all V . .lohansen). ' '

This
.struct un
blaek l.alteres.

species differs from any member of this genus known
md armature of the hind tibia', the bare eyes, aim

lost

to mc ill the
bare arista, and

Limnophora I{obineau-Desvoidv,

There are two specimens in the eollectiim referable to th s genus -. mnle
and a female, neither o which it is po.ssible to identifv c.,ncu.sivelv 'because

•seen from the arcti.'s of this conti„,.nt is nobiU, Stein. Neither of th.. specimens
^^Z.Z^i:T '" ''"''""■ "•"' '"'"''^-'»'>- "»■>• ^'iff^'r specificilK fn,m

The im.iiaiure stages of the genus are unknown. Th.' flies are cominonlv
fouii.l close to water, being usually abundant on the shores of lak,.s ..n i vers
and .some of the mo.st aberrant forms occur (m the seashore

kille, if' ""' '"".V''k"''" '" •^'■"♦'-'•"l ''^''-''i-'K "Pon insects, but whether it
killed the sixTimens it.self or merely appropriated the .liscarded p,-ev of other
preda ors I ,.„„ .lot say as I ,lid not see it catch anv flies. The propose" is
not adapted tor j.iercmg, though arme.l at apex with chitinous rods whi.'h mav
serve to aorade the integument and so (>nable the in.sect to f.^ed in a i)r.-datorV

Limnophora, sp. i.

n at Cockburn point. Dolohin and Union strait
•■tuber 7, 1!I14 ( F. .lohansen), has the eves separated
distance across posterior ocelli, the orbits narrower
irrowest i)oin1 ; ari.sta pubescent; thorax with three
1 doFMi-cenfrals; presutural acrostichals irregularlv
large, siibtriangular, separate, brown spots; fore
s<le; mid tibia absent; hind tibia with two antero-
o-dui.-al brisii.'s; third vein liare at ba.se; veins three
, last section of four about 2-.") as long us preceding
light. ^

A niiile >pecinien tak(
Northwest Territories, Sept
by slightly more than thi
than interfrontalia at its n
strong ptiirs of postsutur.i
four-rowed; abdomen with
tibia with one posterior i>ri
dorsal, and two weak po.-iti
and four divergent apieall\
.section; outer cro.ss-vein str

Length. 4 ."> mm.

Vol. iii— 4liW.i— j

(iO C

I'niiiiilidii Arctic ExpcilitiDi:. l!il.!-IS

*

This species differ- from any I liave seen from North .\merie;i. Iiut owiiijj
to the very close roemlilanee Ix'tween s))ecies of thi> ({enils anil the poor >tate
ol 1 eservation of the specimen 1 do not consider it advisalilc to jiive it a name.

Limnuphora, sp. 2.

A female taken on Herscliel island. Yukon Territory, .lulv '2'.K \'Hi\ 1 1".
Johaiisiiii. ditTers from the foreKointJ in havinu four pairs of postsutural dorso-
ceiitrals. the acrostich.als two-rowed, dorsum of thorax distinctly- irivittate.
mid tihia with two antero-dorsal and three jJost.To-dorsal hristles. hind tibia
with one antero-ventral, two antero-dorsal. and two postero-dor>al hristles,
and the last section of fourth vein comparatively longer.

LeiiUlh, \ 1') mm.

Pogonomyia Hondani.

This Kenus has mucli in common with Tiiclii>iiliciis. In fact it i^ ililficult
to se|)arate the males of some fipecies from those of I'hniiniii and Trlchnplicus.
The male of I'oiiiinoiinjin niteiis Stein was descrilied as a Spihif/nsii r. thou(ih
the autlior of that description recognized the female as a I'lifiniiomi/id an
error which le<l me into deserihiiiK the species in that nenus under the name
I'oijiinomijui jlarinirrin.

The characters which are of servici in separatinj; I'ixiononnjiit from Tri-
clioiiticiif! are summarized as follows:

M.\I,K. Eyes hare: prealar bristle lona: fore tarsi short and with erect
short i)ile ventrally. tl. other tarsi spinose ventrally; hind tiiiia' not curved,
with lonn and short hristles, without fine hairs; hind coxip hare above at ai)ices.

FKM.M.hi. DitTers from the male by the widely separated eyes; in other
respects similar, but with tin- lower supraorbital bristle directed forward and
with cruciate frontal bristle-, characters which separate the penus from both
Fhaonin and Aricin.

There is one species in the collection, represented by one female, which
lacks the abdomen but is otherwise in good conditioii. The species resembles
alpiciilo Hondani, a European species reported as occurrint; in North .\meri(a.

Poftonomyia quadrisetosa, n. sp.

Ffai.m.k.— Ulack, shininjj. Orbits. i)tilinum, and u|)per jiortion of cheeks
silvery pilose, face and lower jiortion of cheeks less distinctly silver> . Dorsum
of thorax slightly (jr"'yish brown pruinescent. with three poorly defined vitta-
anteriorly. Abdomen missinj;;. Legs black. W'injjs clear, veins yellowish
excejjt costa and base of first. C'aly])tra' whitish yellow. Haheres black.

Cruciate frontal bristles stronji; orbitals as in (//7(/(.s .Stein, except that
the weak hairs are more numerous: orbits in profile projecting as far beyond
eye as half the length of eye- niuch farther than in nitcns: anterior angle of
cheeks protruding farther tlian frons at base of :iiiteiina'; third anieniial joint
slightly longer than second; arista microscopically pubescent; \ilirissa very
little stronger than the other bristles, the latter coverin.-: a larger area th.-m in
niteiis: palpi much shorter than in nitcns. Thorax with presutund acrosticlials
weak, irregularly two or three-rowed; postsutrual dorso-<cntrals four in number
r.'ither weak: prescutellars as strong as dorso-cenlrals; pteropleiiia in type
with a long hair near middle. Fore tibia with three to four bristle- on apical
half of post ero- ventral surface; mid femora with a series of long bristles on
antero-ventral surface; mid tibia with three to four antero-ventral, four to
five antero-dorsal. five to six postero-dorsal bristles, and three to four
]M)-t(^n)-vciitrai bri^th•s: hind femora with a series of long bristles ..n antero-
ventral surface; hind tibia with five to seven long bristles on antero-ventral,
antero-dorsal. and [xistero-.lorsal smfaces. \'enatii<n as in filtcns.

Length, (i 7 mm.

hi liUra

•»7 V.

1 I'liiun stijiits,

Tvp,. locality: West of Hcrnanl li!ul)onr, Dolphin an.
-Noitliwcsi Tciiitorics, July it. litjti i K. .loliaiiscn i.

Thf typr >p<'cinicii differs from any |.icvio(islv .Icsnil.c.l >p..,i,w of ih,-
pnus in having lour postsnimal (loiso-,-..ntral,s. If the sp..<iMicii i.< al.nonnal
in this irspct It can l.c scpaialc.l from intni.^ hv the presence of tli<' lonn l.ii-'les

..n the aiitero-yentral surface of the nii<l f.mora: from the > .ics i.lentific.l l.v

>tem as „l,„n,l,, Hoii.laiii, hy th.. yellowish winKs, almost l.are arista, and the
niKl-teiiioral hristles.

A third s|MMies which occurs ill th.. Tnit.Ml States, an.l whicii ivs.mhI.I.s
oIlHcohi. IS s.^paral.h. from <iiuulns,l„x,i |,v th.^ more l.M,.selv j.ih s.^ f.uv taiM th.'
iiior.. wi.h'ly >pa,M.,l and hm^.r hrislh^s .,n iater.,-v..ntral maruin- .,f th.. mi.j
an. hm.l tarsi, th,. .iark.T wmtis, an.l the short.T paj.li, tlw latter h.ing h.s> than
halt as loiifj as th.' ;ii)ii.al p.)rti.>n .if the iiroJM.scis.

A tilth, an.l pr.il.Ml.i- a sixth sp.'ci.'s, f.,un.l in (■.,l..ra(lo. aiv v.m-v di-i i„t
ir.uii iiiiiiihiniliisii.

Pogonomyioides, n. u« n.

(I'l IK rir ( 'liiiriKii IK,

Ikmai.k. K.s.Miil.l.s l'(»i„„„iriiil,i, .lifT.Tinn prin.-ipaJv i the iir.-ilir
bnstl..l,einji w.'ak ..ral.s..nt an.l in having tin pt..ropl..ura with a numh.r ,.f
lonti hairs ..n .•.-ntiv. '111.- .mly spe.ies .,f /',«/„,,„„/,,„, i„ whi.'h 1 hav.^ -.■,u
any hairs on th.- pl.^r.-phMira is th.. .m.. .hs.Til....l in this paj-.r. In a.l.liti.,ii i.,
the alM.w chara.'t.Ts t li.. intra-alar hristl.'s aiv pract i.'.allv al,>...it in I'ojioiiomv-
loKles, usua ly only the p.isterior one heiiifl .listiiinuishal.le and that v.rv
weak, an.l thiT.. is m. hmjj l.risth' at ap.^x of f..iv tit.ia ..n v.'iit.r. nor ir.' th.r'.'
any .•..nsinciious hnstl.s at apic.'s .,f for.' tarsal i..iiits v.Mlraily.

Ill .itli.r r.'^p.'.'ts as I'lhiiimiiinjlu.

Type. I'i)(iiiiiii)iiiii(iiil( s (itidfa. n. >]>.

Pogonomyioides atrata,

II. sp.

I-KMAU-,. Pupariuin: Mn.wiiish r.'.l. slightly shinintr. Surface mi.-n.s,.,„i,-
allyKraiiulos.'. alm.M without .-tria' ai.ove. finely hut verv .|i~iiiictlv traii^v.r-.lv
-^tri.'if.' v.iitrally, iMM'ommg ni..iv .-..ars.'ly s., ii.isteriorlv. l',,st.'ri.,r p.irtioii .'.f
ce|)hal..pharyiisr.al skeh't.m v.'ty ..leii.ler. as sh.nvn in I'l. I X. h^. ;{()• ,|.,r-.l
halt ..I th.iracic seKini'iits al-M^nt : apex with a .-.mcentri.alh ri.lp;..! rim Mir-
r..iiii.|inK a small hut .le.'p cavity; h).'..m.,t..r proc.'sses appar.'iitlv la.-kiiiK
.■x.-ept 111 enter of .'ach ventral segment, wh.'re th.'re is a sin^l.' tran-verre
s.'ries ..1 inicros.'..pic elevatl.in- .■xt.'ii.liny; n.'arlv a.n.ss the s..giii..nts- a -in);le
.-^iTies ot small. >tit.-h-like impressions hetween .ill M'^inu^nts. whi.h is ,|ii' it..,!
and surrounds th,' lati'ral lusiform ;'.rc.i. 'hrecr f.iur, short, irr.'siilar Unv ij,i.,i
series o| iinnut.' .■I..vati,.iis on .'ach se/rin.'iit lat.'rallv: has.. .,f ahcloiu, wit'h
th.. pair ot r.■^pl|•at<,ry tul.eiTl.'s w.'ll ,l.\ ..hip.'.l. sl.'n.h'r. ai,..ut ^ix tine- is
loiiu as thick at has.': a|>i.'al .M'um.'nt irr.'nularlv >hnink.'ii ipossiMv al.n.irnni •
a hir^i.' . l.'pr.'-^inn .•.•luilad ol spiracles and .'Xt.'n.lintr torwaid t,, p..sterior marijui'
-.1 p.'iiiiltimaie M'frni.'iil. a suhl riaimuhir .lepr.'s.-mn situ;it,-.l in extr.'ine 'ip.'N

and a larp' ..i n lat.'ral area: spira.h's sliditlv .'h'vai.'d. s.parated l,v le-s

than thr.'.' tiin.'s th.'ir .iwii .liani.'t.'r. t !**• ..peniuKs .lir.-.t.,! .iorsa.l. v.
and lat.ra.l r.'>p.'.tively.

I.eiiHth. (>■.") nun.

Iina^ii: HIack. >liKh.ly -hininu. iirlul.- and uppt-r jiart
pilo>.'. Thorax with >lif!;hi greyish pniiiii-cen, , ,li-tin.-tly 1
i'H-iy .juadriviHale. Al.d',r;i, n ~i;fciiii^ ..n.i .^ ,-i,K iir< ■ pruin.
Calyptra' y.'ll.iwish. Halt. 'ns black.

i"r..iis al.oiit two-fifths ih.'wi.lth ofhca.l, each ..ti.it al).iv.' .ii...ut on.-tilth
.•IS wid.' as iiit..rfn'ntalia: iiiterfr..ntn! .-ruciat.. I.n--!... -trontr: orhitaU -.^ ui

\\i\. iii— 4ii'ii:.t v

'■.■ntra.l.
■h.'ek- silvi.ry

II. It ....Ilspicll-

Wiiig- cl.-tir.

^1

♦is

( iiiiiiilioii Airtir Kxiiedition, Wl.i-IS

h

I'ltijoiionniKi iiundridetom: untfrina> ■'hort, tliinl joint less than twice as ioiiji
as x'CDiiil; arista ban-, second joint as ion^ as thick, third swollen for ai)out
one-tiiird of its length: ciieeix alioiil one-fourth as liif{h as eye, densely hiiired
nil lower half, the hristly hairs almost uniform in length and streiiKth, vibrissa;
well difl'erentiated; palpi slender, nearly as Ioiir as apical portion of proboscis.
Dorsum of thorax not very conspicuously hairy; presuturid acrostichals weak,
irregularly four-rowed; posts-.itural dorso-<'cntrals four, i)rciilar l)ris11e very
small; a Kroup of numerous bristly hairs above fore coxic; stcrnopleura with
very long hairs and two stronn bristles, one in fr<»iit and the other behind
.\bdomen with short bristly hairs anil no long bristles. Lejjs similar to those of
I'oKononiyia in form; fore coxa- without stout bristles; fore tibia with two to
three weak j)osterior bristles, apical spines sluirt ventrally; mid femora with ;i
few weak bristles on basal half of antero-ventral surface; mid tibia with two
to three antero-ventral, two to four antero-dorsal, four to six' post ero-dorsal,
and two to three jjostero-ventral bristles on surface; hind femora with rather
weak bristles on jj'"*""'''' portion of antero-ventral surface; hind tibia with
three to four antero-ventral, three to five antero-dorsal, and six to einht postero-
dorsal bristles, none of which are very long; mid and hind tarsi with short,
rather closely placed bristh's. Costal thorn indistinct ; outer cross-vein straight ;
last section of fourth vein aliout l-T.') as long as preceding section.

Length, 7 mm.

Type locality; Hernard harboiu'. Dolphin and I'nion strait. Northwest
Territories, ,)uly 7, I'.H.") ( F. .loliansen).

I have .seen a series of s|)ecimens of this species from the arctic region in
another collection, and find tliat the pleroi)leural hairs are rarely ;»l)sent. The
chara<'teri/.ution here given holds good throughout the series.

COENOSIIN/E.

There are two imagines of this sub-family in the collection. Hoth belong
to the genus ('m:iiiisi(i and rejiresent different species, but onl>' one is in good
enough condition to permit of its identification.

Coenosia octomaculata Zetterstedt.

CiMiioxid iH'tnmiiniliidi Zrltcr.-itcill. bis. I.;il)|>., I>. HI, 1H4().

This northern l'".uropean s])ecies has not hitherto been recorded from this
cotitinent. Although very closely resembling (jiniadatii Fallen, it is very
ri'adily s<'i)arated from it by the much smaller lower scpiama. which barely
projects beyond the U|)])er. In the specimen before me the mid tibiiv have the
antero-dorsal anil ))ost ero-dorsal bristles at the satne height, wlu-reas in my
specimens of (jiniciilntn from Illinois the antero-dorsal one is much nearer apex
of tibia.

Locality; Nome, .\laska. .\ugust 24 and 2."), litlti (F. .lohanseiij.

Coenosia, sp.

One female in very poor condition. The legs appear to be black or fuscous,
with only the ba.ses of the tibia' i)ale.

Locality; Bernaiil liarbour. Dolphin and I'nion strait. Northwest Terri-
tories, ,Iidy 10, 1915 ( F. .lohaui^on).

ANTHOMYIIN^.

There is one genus in this collection which has been previously known from
arctic Europe only, and another has been listed as belonging to Anthomyia. In

Diptirn (19 ,;

order to niakf dear tli" j£<'iifric rcliilions of tlii-H" I have drawn up an atiridjtcd
key to nf'ncra wliieli i.s presented lierewitli.

Kkv to (iKNKKA IN ( 'lll.l.KiTlON AMI TIIK CiKXERA MOST ( l.dsKLY AI.I.II;!) THKIIKTO.

I . ICycs hiiiry .1

Kvcs biiri' T,

•J. Al.<l(.iii(.|i broiully oviit.', liltlr longiT Ihiui broiid; .-yes in iiml.' dislin.llv .s.imrati-.l ii'i
fciiiiilc the width nf froii!< i» very little iiii.rr lliiiii lliiil of miilr .4//i<"«/m(.s S and I)
AlMlomni iiiirrow, almost parallcl-sidnl, imiili l.Hijfcr tliiiii hroa.l; .v.v in iiialr contiKiioiiH
'" f<'"mlc .scparatril by at lca«l om-tliird tin- width of hrad " . Ari.«o/M M.i(tiii'

.i. ( ayplra dccidollv iiiiciinal in .size, the under one iiro.icili.in hrvoiid uoiht 4

( ulyptra not as ahovc, the lower one not projei'ting f,

i. Lower ealyptiT very nnieh loiiRer than iip|«'r; arista plumose llyilroplmna H -I)

_ Lower lalypler not much lonner than upper; arista almost bare . Kulf H -1)

... Legs bla.-k; arista pubeseent or bare I'horhia H -i).

Legs blaek, or with tibue pale; arista hairy or pluni.we Ilylemyia Meigen

Leijs with at least the tibiii' pali- arista pubeseent or bare Pegomyiit H -I).

The last three genera are poorly defined and overlap eoiisiderai)lv, hiit my
studies of the family have not heeii liroiiKht to the point where I am prepared to
puidish reliahle charaeters for their differentiation, so I use the generally aeee|)te(J
ehanieters. I have in preparation a K<'i"'ric synopsis of this and other suli-
faniilies which I hope to publish shortly.

Hydrophoria Hobineau-Desvoidy.

The only species of this ftenus on which I possess information concerning the
early stajjes is aipiatic. The Hies are always found in the vicinitv of rivers or
|>on<ls.

There is oidy one species in the present coHection, which is described as iit w.

Hydrophoria arctica, n. sp.

Malk. -Black. Frontal triangle opacpie black, orbits, cheeks, and face
white pilose. Legs black, tibia' slightly brownish. Wings grevish, veins black.
Scpiama' white, with yellow margins. Halteres brownish yellow.

Interfrontalia obliterated below ocelli, the orbits tit this point linear; third
antennal joint about lo as long as second: iirista taiM-rcd on basal half, long-
haired to middle, bare apically; orbit in profile extending bevond eve iis far as
width of third antennal joint ; cheek 1 ■ .') as high as width of orbit : vibrissa long,
marginal bristles on cheek long and strong. Fresutural acro.stichals weak,
hardly distinguishable among the irregidarly four rowed hairs, prescutellars hair-
like: prealar bristle about one-fourth as long as the bristle behind it: sternop-
leurals two: two, the lower anterior one weak: upper margin of hvpopleiuiP
hairy proximad of spiracle. Abdomen short and broad, cylindrical," segments
with long bristles on posterior margins; hypopygium with ba.sal segment imlisjied,
the apical, recurved one slightly prominent, irmed with many long strong bristles;
fifth ventral segment densely covered with setidose hairs. Fore tibia' with two
bristles: mid tibia with two to threi' antero-ventral. three to four antero-dorsal,
two to three postero-dorsal, and three to four postero-ventral bristles; almost the
entire length of mid-femora with long bristles on theanteroand postero-ventral
surfaces; hind tibia with five to six short bristles on antero-ventral surface,
seven to eight irregular ones on antero-dorsal, seven to eight on postero-dorsal
surface, one beycmd middle being very long. Costal thorn at letist as long as inner
cross-vein; outer cross-vein very much flexed; last section of fourth vein about
1-.") as long as preceding scctiott.

Fkm.\i,k. — Similar in colour to the male.

Frons opacpie black, den.sely brown pruinescent. nearly half iis broad as liead ;
orbits broad, each at broadest part nearly its broad as orbit at same part; cruciate
bristles strong; supra-orbital bristles four in nundier. the lower one directed

rtt .

Ciiiiiiiliitii Aiiiir ExiMililiiiii. lltl.i-IS

h

(■liulilly oiitwaiil iiiiil forwiinl. Ilic iillicis (liicctt'd iiiilwaril: (.il.ital Imiis
llllm(•rlln^ iiiid nearly as lona as the lirisllcs: one to two l<»iiu l.ristlcs hiliiatril
aliovf vilirissa. Aliiloiiicii lapncd at apex; last scunifiil nut i-xixiscd. making
it impossible Ik say if it is ar I with nirvcd tlmrns. Lc(£s and wines as in male.

I.cimtli. )i mm.

Type locality: Cocklmiri point. Dolpliin and I'nion strait, N'oilhwcsl
T.iritorics, Scptemlx-r .'>, l!tU i K. .lohansent. .\llot\|M'. Hcinard liarl.oiir.
Nortlnvest Tcnitoiics, .June Hll.'i, i K. .lolianscnl.

This species aurees with ilirim Meijjen in havinjj the liypopleuia with hairs
<iu npper portion, hut ditTers from it and all other species known to nie in havinji
liieorl.it in the female .irmed with lonj: hairs in addition to the l.risties. ami in the
very conspiciionsly hrisily hypopytrinm and lone costal thorn,

.V female s|M'cimen. in ver\ poor condition, from Collinson point, .\laska.
.lum •22-2.\. I!tl4, may re|)resent a distinct species. The mid tihia on one side is
tione, l.iit the one remaining is reddish and h'sshristly than in nrrlirn. lint without
l>etter preserved exainph's it is iinpossilile to sav (U'hnitelv as to its specific
identity.

Alliopsis Schnahl and Dziedzicki.

(iencric Characlern.

M.M.K. V.

[ilxtve; anieiimi
iriimeroiis loni;
dirt'erentiated.

y roliiist. Head larKc, eyes lon>t-haired, narrowly separated
shorter than face: arista almost hare: cheeks with very
bristles (111 lower margin and anteriorly, the vibrissa' not
Thorax with three pairs of postsiitural dorsocentrals;
ealyptra- of ino(h'rate si/.e, lower scale not pnijeclinK, Abdomen broad ovate,
its lennth barely exceedinti its urealest wiilth: hypopyniiim small: apical
visible ventral senmeiit with a wedne-shuped central ini'ision. Legs stout,
^tronuly bristled. Sixth vein extendinn to marjjin of winn,

Kkm.vi.k. Head as in male but tin' eyes ar<' more widely s<'parated: orbital
bristles numerous, hair-like, erect and sli({htly inwardly directed, outer supr.i-
orbitals and cruciate interfrontal bristles absent. In other respects similar
to male, the abdi ^u'li not .so broad ami more pointed apically.

at base. Scpiama'

Alliopsis obesa, n, sp.

Mai-I-;. -Mlack, shining, AVings slishtly greyish, fu,scous
Hiey. margins brown, Halteres yellow, knobs l)rown.

Narrowest part of frous as wide as distance across po.sterior ocelli, the orbits
linear above and not over one sixth as wide as interfninta'ia; profile as in PI. X.
fig. :{:}: hairs on eyes [)ale. Dorsum of thorax with long hairs; acrostichai>
long and hair-like, irregularly four rowed ceph.ilad of sutme; posthuineral and
presutural bristles strong, the latter duplicated oti both sides, and the former on
one side, in ty|>e; prescutellar bristles weal-: seutellum with four long marginal
bristh's, numerous long diseal hairs, an I ,ery disiinct ventral pile: propleura
above coxa' with a conspicuous clump o; hing bristly hairs; sternopleurals three
in number; hypopleura bare. Alidonwii with long setulose liairs on entire
surface, those at apices of segments bristle-like; fourth segment the shortest:
hypopygiuni very small, globose, glossy. Legs rather dense! overed with
moderately long setulose hairs; bristh's on fore and mid tibia- ha' . distinguish-
able from the hairs but apparently as foUows: fore tibia' with \ to three on
postero-dorsal ■ face; mid tibisR with two to three on eacli of me following
surfaces — anteio-dor,sal, postero-doi-sal, and postero-ventral; hind femora
with long bristly hairs from base to well beyond middle of postero-dorsal sur-
i,ue. and nmch stronger bristles on the whole length of antero-venlral surface;
liind \ibiip with four to five short bristles on apical half of antero-ventral surface,
six to eight longer bristles on entire length of antero-dorsal surface, and six to
seven long slender bristles on postero-dorsal surface, the so-called preapieal bristle
veiy long, and very slender at apex; tarsi normal. Wings greatly exceeding

Diptrnt

'\ (

«|M'Xiil' uImIiiIiii'Ii, tlic Irlinlliol w inn (>(|iiul to that of t'litilr iliMTt ; ^■^^>\^^ wjlh
kIioiI lil:ick w'tiilii', tlif co.-ital spine not (lilTi'icntiiilccI: outer erosr-vein (•ur\e.l;
laf<t section of fourth vein twice ;is I(»n(j as precedinji section.

I.eni£tli, K rum.

Type io.aiity: Hernanl liarlioiu', Dolphin and I'niou strait, Northwe-r
Terrilorie>. .Iinie, lltl."i-i(> ( F. .lohansen).

Aliiopsis, -p.

!• KM.Ki.K. Similar in colour to dIhxii.

l-"rons at narrowest part al>out oiie-ei(ihth the width (»f liead. the orhits
linear and al)out one-fifth as wide as interfrontalia, liristlesas in preceding species;
profile as I'l. X, fi)j. ;{2, Thorax much h'.ss conspi<uously Iwdred than in nhi-^ii.
the dorso-cenlrals stronger and well difTerentiated ;' presutiiral acrostichais
irrenidarly four-rowed, presutural hristle single: prealar as in iihv/<(i, nearlv as
lonn as the l)ristle I.ehiiid it : scutelluni with a <lifTerentiate<| <liscal pair of liristles
in addition to the marjjinals. Alxlominal hairs very lonn on lateral marnins of
.segments and on apical two. short on disc, the contrast more sirikintj than in
«6t'.s«: apical genital segment witliout thorns. J.egs less hairy than in olnsa. the
bristles on tihia- strong and distinct : Uirv tihiic with three long hristles, one on the
anterior dor.sal surface and two on the posteiior; mid tihia' with three antero-
dorsal, four to five postero-(h>rsal, and throe post ero- ventral hrislles; hind
femora as in nhtxa, hut hind tihia' with four to five long l)ristles on the i)asal half
of posterior surface in addition to tho.se on the other .surfaces, the latter stronger
than in uhcsa. Wings as in obisa, hut the costal setuliP are longer, the costal spine
is distinct, and the outer cross-vein is straight.

Length, 7-.") mm.

Locality: Camden hay, Alaska, .June, 1!»14 (V. .Johansen^

It is ))ossil)le that the two foregoing forms represent f)nly one species.

The genus Aliiopsis was erected for the reception of the Kurupean arciii'
species glacialif: Zetterstedt, and is closely allied to [.(t.siop.i .\[eigen, iiotli having
the eyes very distiiu'tly hairy, hut it may he separated from that genus in the
male hy min'h more widely separated eyes, those of Lnsiopn lieing sulicontiguous,
and !)>■ the very hroad abdomen. The female of Laxiops has the froiis similar to
that i>i I'horhia. whereas that of Alliop.^ix is not nuich wider in the male and all
the orbital bristles are directed slightly inward, none dire<'ted forwanl.

Egle Uobineau-T^esvoidy.

This genus contains several species that have been jilaced in Anllidmijia by
liiosi authors. From the type of the latter K<jl< ditTers -at least the s|)ecies
know a to me — in having the prothorax bare l)elow and in front of the spiiacle.

• 'lie species is present in this collection.

Egle radicum (Linne).

AffiJtiii niiliniiii I,iniu'. Ftiuiia Suoc, 'M rcl., p t.J4, 17.")l>.

Six specimens, with data as follows: Nome, Alaska, August 21. Ifllli, two
specimens, and August 24-2"i, IDlti, three .specimens: and Teller, Alaska, Julv
29, I!)i;? a''. Johansen).

Thi.s is a European species which occurs throughout North America and
has i)reviously been recorded from Alaska.

Schnabl and Dziedzicki have erected the genus Pareglc for the reception of
the above species and several others, but I do not tiiink the separation warranted.

72c Vaimtim Arctic Kipedition, ll*lii-tS

Hy\emyia Holiim-au-Di'svoitly.

Tlii(i jtinii* is iKit well (h'tincd, uiid it in vctv difticiilt, in fiict nliiKiHt im-
poKnililo. to Mf|mnitf some s|M'ci('s from the ncnuf Phorhia by the .ippliiiition of
rhHractciH nivcii in iHihliwhcd keys to thr (icncra of the fjunily.

Tlu- larvu- an- very lit tit- known; thocc that arc known live i-itlifr in ilecuving
v<'(i<'tiition or, rari-ly, in living pliintx siK'h w wheat.

Hylemyia variata (Fallm.)

Mim-n iiiniila I'alltMi. Dipt. Succ, .Muse, p. .lit, IS'^O.

Then' is one fcnnde of thin n|M>cic» in the collection, taken at Nome, .Alaska,
August 24 and 2ofh, l!»l»i (F. .Iohan.sen).

Th«'re are records of this KurojM'an s|M'cies from niany states in North
America, its range extending from Massachusetts to Idaho, and .south to
Louisiana. It has also Iw-en recorded from Ontario and Alaska, so that in all
probability it is to Im' found throughout the entire area of North America.

Hylemyia acrostichalis.

n. sp.

Male. — Ulack, shining. Wings clear. Calyptra white. Halteres yellow.

Kyes separated by not more than width of anterior ocellus; frons not
buccate; antenna" nearly as long as face, third joint mtrrow, about twice as long
a.s sectind; arista with short, rather dense hairs, the longest hairs longer than
diameter of arista at bas«'; chwk not much higher than width of facial orbit in
profile, and about one-seventh us high as eye, bristles confined to margin, one
short bristle above vibrissa; prolK)scis not very stout. Prealar bristle long and
strong; two pairs of long presutural acrostichuls present. Abdomen in type
cru.shed; fifth sternite with a deep central excision, the lateral extensions with a
fringe of front hairs on inner margin, and a number of bristles on stirface, the
longest of which does not exceed in length the lateral extension (PI. X. fig. 39);
hypopygium small (Fl. X, fig. 40). Legs slender; fore tibia with one pf)sterior
and a weaker antero-dorsal bristle near middle, and a small sharp bristle at a|H'x
on posterior side which is directed downward and slightly backward; fore tarsi
slender, longer than tibia; mid femur with five to six bristles on basal half of
postero-ventral surface; mid tibia with one to two bristles on each of the following
surfaces;— ant(i<)-dorsal, i)ostero-<iorsal, and (lostero-ventral; mid tarsus normal,
not longer than tibia ; hind femur with long widely-s[)aced bristles on antero- and
postero-vpntral surfaces, those on the latter weaker and not carrieil to apex; hind
tibia with thre<' to four bristles on each of the following surfaces— antero-ventral,
antero-dorsal, and postero-dor.sal, those on the latter surface much stronger
than the others, especially the one nearest apex, posterior siiil'ace with one
bristle near middle; hind tarsus normal, shorter tliun tibia. Costa with weak
.setuja>, the costal thorn distinct but not very long; last section of fourth vein
1 • 7.T times as long as preceding .section.

Fkmale. — Similar to male in colour.

Frons nearly one-half the head-width; cruciate bristles long: each orbit
with oni' .strong bristle below the forwardly directed supraorbital; cheek narrower
than in male. Thorax as in male, the bristles stronger. Genital segments not
armed with strong spines. Legs similar in armature to those of male, ("ostal
thorn longer than in male, the upper exceeding the inner cross-vein in length;
last section of fourth vein very little longer than preceding section.

Length, ti-.T mm.

Type locality: Nonsp. A!."..ska, August 21, 191fi (F. Johansen).

Thi-i species bears a resemblance to margimUa Stein, but differs in armature
oi fifth abdominal sternite, almost contiguous eyes, and armature of legs. From
.v mpla C'oquillett, an .Alaskan species, it is reaililv separated bv the bristlir
thi' hind tibia.

ing of

til/til III
Phorbia Kohiniait-Dcsvoitiv.

73 c

Tlnif III.' iipiitinnrly four ^ih-vwh of tin.* m-un» in tUv .■i.ll..<ii..ii, n,,i„ ..
wliicli iiro III Kooil ('iiiiiliriiiii,

Phorbia brevitarsata, ii. xp.

Malk. Hliiik. Aiitfiior porli.iii of ii.lciironl.iliii. faii.il oihits :iii<l ih,-
Kr.-at.;r portion ot .litck^ rufous. Winus <l.':ir. ( i.lvplra vcllow. Halt.'irs vcllow
hvcs scparati'd at narrovvrst part of fioiis bv a ilislanci- more than' criual
to width across |M.M.Tior o<»lh: cniciat.' l.ristlcM Iomk and hair-hk.': antenna-
Khort, tliird joint I .') as Ioiik a> -icoikI; arista iniiili swollen at has., tapcrcl
to near aiK-x of hasal third, ahnost Imic; facial orhit m profile iieurlv as hroad
IIH heiKht ol eheek. the latter oii«'-thir<l as IukIi as eve; vihn>.-al aliKl- weak
alinosl on a level with lower inarnin of eyi-, the porlionVeiilrad -.f it nearlv verti-
eal; eheek with a few weak marginal hairs. Prealar l.ristl.' verv short ; three to
our pairs of weak aerostiehals in front of siitiiie. Al.doiiieii suhevlindrieal, l.iit
httle ttt(H-red [wsteriorly. L«ks rather short and stout; mid tihia with one to
two f.nstles on aiitero-<h.isal and postero-dorsal surfaces; hind femur with an
almost eomijlete series of widely spared l)risth's on antero-vontral surface an<l
a iiiim her ,>S .Himilarly disposed hrislles on hasal half of postero-v.-ntral surface
liind f il>ia with loun slen(h'r l)ristles on iintoro-ventriil, antero-dorsal, and iiostero^
dorsal and postero-veiitral surfaces, tiiose on the dorsal surfaces stronxer, more
irregular, and more widely spaced than those on ventral surfaces, the postero-
ventral surface with the bristles vi'ry fine and hair-like and in a .h.uhle series
on basal half; hind tarsus <listinctly shorter than hind tibia, the basal joint
le.ss than one-third the tibial length. Outer cros.s-vein of wing (>l>li(pie last
section of fourth vein about 1 .') as long as preceding section.
Femai-k. — Similar to the male in colour.

Iiiterfrontaha not much wider than orbit: cruciate bristles long and stronu;
two bristles proximad of anterior supraorbital; facial orbit in profile nearlv
as wide as height of cheek, the latter half as high as eye. Tiiorax showing traces
of {MiUinose vitta'. a sleiuh-r one on each side of anterior aerostiehals. Abdomen
tapered jKisteriorly; apex of last genital segment with numerous short st(.ut
I>ri8tles. Fore tibia with one posterior and one antero-dorsal bristh-- hind
tilna with fewer hair-like bristles on ventral surfaces than male, those on postero-
ventral surface confined to basal half. Costal and radial veins noticeublv
|)aler than others; costal thorn of moderate length.
Length, 5 mm.

Type locality: We.st of Konganevik, Camden bav, Ala.ska. .Juiv I, 1!H4
and Jtint iyi4 (F. ,h)liansen).

The much-protruded face. i)ale colour of orltits and cheeks, and armature
of the huid tibia of male separates tlii,-i species from any known to inc.

Phorbia, sj). i.

This species closely resembles siib.stniitii ."^tein. Init differs in having the
facial orbits in profile about as wide as height of cheek, the presiitural aerostiehals
more numerous and much weak' i. \one of the specimens arc good enough
eondition to ensure accurate identification.

Locality: Bernard harbour. Dolphin and Inion strait. Northwest Terri-
tories, July 18-10, l<tl,i. and July llUti (.F. Johansen).

Two males and three females.

Phorbia,

qi. 2.

Closely resembling the pre<-eding species. DitTers
entirely black, the wings h'ss conspicuously yellow at
thorn much shorter.

in having the
iiase. and tlie

frons
costal

f .

J - ■

N .

fntiiiiliiin .\iit I- t'.xi>i'li>'<n , an.i-i.^

I.iiriility : ilfriianl liiirlxiiii'. I )i>l|iliiii iiikI I iimii oti-iii, Nuii|i\m-).i rniit.iiic..
Aiiiiu^t 1-7, I'M.'). (Ill July. I'.Hli li. JoliatiM-ii..

Phorbia, »|) :«.

Uiu' iiialc ill very puiir rnliillholi. Hi'«fltililc» Inn ilm sutn in aliniidll"'
(if the IcKH, lull (litTi'is ill haviiiit tin- aliiloint'ii <l<'pit«Hf.|. ami tlic liiml i.ii«i
alioiit a.<> ItiMK i\<i till- tiliia

Locality; On samly lii'acii. Ifcniaiil liailmiir. nulphin ainj riiiiin siraii.
NiHthwcHt 'I'l'iritoiic*. .Inly Id, MM.'i i K. .lohaii-tn,.

Phorbia, >p|i

Five spi ciiiicn^ lirlonuiim in t|li^ Kcnnr- an in «nili piior t'oiniiiiiin lliat
I ciniKil Matinfacloiily assinn them to aii> ot tlii> picccilinn ''|«'i'i<'s or to any
known lo nic.

Locality: llcixclicl iftlaiul, Yukon Tciiitoiy. .Inly 2!t. llHti, oiu iVnialc:
Hcinanl liarlxiur, Noiiliwcsi Tcrriioiio. .Inl\ l(i, W\'>. one inalc. oik l.iiiuli':
wiiiif locality, .liiMo IH, 1<M,'», otic IVnialc: (ollinsoii |Miini, .\laska. .luiic 2(».
I!tl4 (F. .lohanscn).

P«gomyia Koliincan-Dc-voiily.

This dcniis as at prowiit constituted contjiiiis s|M'cics which arc very dissiiiiilai
in habitus, and my knowledge of the larval liahits of a iiunilM'r of the s|M'cie>
leads nic to consider certain that such s|M'cies as iiiiinilnr Stein, tifftnix .Stein,
and liiri)li)r Wiedeniann are not conjjeneric-. The first-named I have reared
from mushrooms, and the larva reseinhles much more closely that of Anlhomym
lihiriiiUs Linne than that of himlor, which is a leaf-miner. The larvir Of
a^«/.s are found in burrows of rodents and in laves itr holes in the mound which
inaminals or birds frequent and are essentially scavenjjers; their structure
is unknown to me. Both species in the present collection are more closely
related to itnicobtr than to hicolor and may have the satin- larval habits.

Pe^otnyia flavlpes (Fallen. )

AfUhiiimiiii tliii-ijHK Kallfii. Dipt. .'Siifc , Muse. p. IH). sp. rj.'i, l.s'.Mi
Aiitliimii/m iiiilthniHs l.rfMW. Zcit^clir. I'. *'•{■*. Naliir»i>s. l((l. Is.'i".
I'lgimifim fliiviftiii (.Fiillcn.i .Stein, Wicii Kiit. Zciik . vdI J.'), p. liil. I'.dHi

This species has the ({enenil habiliis of iinintUtr Stein. I«ni is consiih'iably
darker in colour ami is se|)arable from it> conueners by the remarkably lonit
brisllo on the antero-ventral surface of the hind femora, the longest one beinn
iit least three times as lonn as the diameter of the femora where it is situated.
The lower bristle on the postero-dorsal surface of the hind tibia is at)out half
a> lon^ a.s the tibia.

One male .specimen in ver\' poor condition. Nome. Alaska, August 21,
IDlti (F. .lohaiisen).

Pe^omyia albimargo I'andell.

I'lVomijin alliimargn I'nnilcll, Ufv. Kiit Kriimc. vol. 'JO. p. 2iK>, VM)l .

I'iKirhia obseura Mciiilo (iicc Maccniart j. Kiit. Mimth. Mag., vol. lit, p. ilii. 1S>*:{.

This species is one of the smallest and most variable in colour in the Rroup.
."Sometimes the whole insect, includin>j the legs, is black, but commonly the
nbdutnc!) and at lea-t the tibise are reddinii, or trali^lul:ent. The ihorax is always
black and in front is marked with four short vittie, between which the dorsum
is conspicuously white pruincscent. The black antentiiP and palp, serve to
distinguish the specie.s from vittigern Zetterstedt. whicli it most closelv resem-
bles in the duetotaxy of the legs.

1*1 III, 1,1 ;• ,

l,.Mall»\ Tliir.- iii.tl. -iMrinirii-. N.iiM.'. \l:i.k.i, .\llmi.| J | ,i„| ■>( |<)|ti
' I' ■ .Ixllilll^l-ll

UmIIi tin-,, l;iii,,|Mali -iMTi... ,,,-• M ..r-lr.l li.Trir, |u| llir tll-l riliii' ll..ln
INorth Aiiicriri.

FICEI.I.IN K.

Fiudlia l{utiiiit'Mii-l)<«VM|i|y,

riir ,|NH'i.-. Ill lln- llrlMl^ Mr I.miImI mIomj; I |ir lli:umil^ of «l|..llli» ..li -|i.'
W'Hsll.ilf. mill Kli llif «lnnr- . I l.ikr-

Kucellia punctipenniM H.(ki i.

/•■.(.<//,./,,.,,„/, ,",..,,x H.Tk.T. Ml,|,|,.| . i.r.,„|;,||.|, \,,| -."1. |, III |.HIS

riii> -p'-i''' «a> .|.'». iiIh^.I lro„, . ,i>l ( ;ir..i,!nni| :ili<l li:.« im.I ^iii<* !,..•:
riT.MiliMl All III. ^|M'(iiiirii« II, III, iM.'snil collrruuii uciv ohtaiii..) at Hniianl
ImilM.iii i)..l|,l,iii aii<l I iiion .iiMii, Vuilliuvst T.rnl..n.«. ,Mav KiHi. aii.l .litm.

IN. I!l|.). Kicvi'll -pctuil'li- r Jul, ilix'iii.

Fucfllia .uiiilformis H.ilTtiitn n

t'iiiiH,„ ,inr,,f„nii.:, l(.ilmirr,i:. k ,.iu, \ , ,..,|.|, ,,, , ,,, . ,,,,i: |s7-.)^ \„ n j, ]((;(

Tlii>s|»Ti..,jwa-oni£lliall\ .1.-.! ! ell,,.,;, ' invnlaMJ. Ihav, .vii .Aalnplc^
II..I1I I iil.ilol islands. TIk'i.. -Ai:' fH.'.i.-„i,„ ,„,i„,(.„. ,1, 111,. |„.M-nt ,<.ll,-,-
tioii: niii). ||.,iii M.-iiianl liarhoiir, l)..lj>hii, a,,. I li,»,ii strait. \,. ill, west Tcni-
tonrs lak.Mi May lit. IIMti, May .'It .mi,,! .'•.', .hi. ic •.>:.. ari.l .liilv II, 1!>1.-) ,iiii.i,.,.|i
frori. Dcmairaiion p.uiit, Alaska. Mas I.V n»il; ami ■ •„• Inm, ( •,.llii,s,.i, ,..,iiit
Ahinkii. .hill.. •_><», mil ' F. ■I..iians,.n i .

I .,

sc\TOPn\(;ii).t.

riic larva. .,( nmst -jii'i'lcs of this family fccil iipoi, .It.caviinj vr^'ft ,:.;.
iiialti'i- aii.l iiianiitv. ( >ii<. Xoiih Aiiicrirai, species, Uij,lro,„tizi VinilUi,' I ., •.
inili.-s. III the larval sta«f. in Ihr stems of \ ii,„i,liii,ii amtriciiiin. fl.e i , .,;.,. ^
of many sp,.,.i,.s are (»re,laee,,iis. feeilinu U|mii, other small insects, an' :•, ■ ' V.,
them are foiinil near water, particularly on the sh(»res of rivers, lake- ■ ■ i:
the seashore. Many speci.'s can l.e ol.taiiicl only l,y very thoroiijjh sw ,,r;,
with an insect net over masses ami other Ik rhajje jriowinij in ponds aim ai., !■
their extreme marttins.

The literature on this family is in (leploral)h' condition from the point oi
view of one who has to iih'iitify species, ami in order to make clear the K,.|ieric
concepts ot til,- writ.r 1 h:ive dr.iwii up a kev to the n,.|,era. which is included
in this paper.

Very man\ sfwcies of the family occur in northern latitudes in fact the
family is essentially a northern one -and this kev will l.e found useful in future
work on arctic Dipter.i

Some of the )ie(„.r;i are pniposeil h,.rein for the first lime, .md .several are
recorded for the fir>i time from this eontiiicnt.

KkV Til (iK\KEl\.

1. SiHM'ics with three stcriioplcunil l)ii-tl,'> ._>

Species with two steriiopleiinl l)r,»ilis. g

.Spet'ies will, one .^teriiopleiiral bristle -

2. First wiiiK-vein l)ri.stly on apical half; palpi without Iomk apical hrit.sie; arista short-

haired or puhrsci'iit; seiilellun, with two or four bristles; fore femora without

elosi.ly plaei.,1 or very .<lroiin (intiri>-iTiilrnl bri.stles Orlhurhiiiln Hi'eker

First wing-vein bare, or the s|M.i'ies .I.m-s not have all of the above characters ;{

7t> c

i'iinuilinu Arctic KxiMililmn. IHI3-I8
Kky to (iKNKka — Con.

•t. I'lilpi with liiiiK :i|)li'al hriKtlc wliii'li is about as long iu" the |ial|iiis: si'iili'lluiii with

six hrisllcs I'tithtthiuin ('ii<|iiillclt.. , .

I'alpi withdiil loiiK apii'al bristle; si-iitethim with two or four bristh> 4

4. Arinta phiinosr I'lirmtyUinKi Coiiiiillctt. .

Arista alomiist bare 4a

4a. Korc femora with anterior ami aiitero-ventral surfariw ariMe<l with closely plai'e<l

black bristles . Aniniintsonia He^-ker . .

Kore femora without such bristU's I'mliiiihi iiliiln He<>ker.

"). Third aiiteimal joint with apex roumlol; >( iitelhim with twci bristles HijiiiniliHrrii Ueeker.
Thiril aiiteniial joint with upp<'r portion of apex acute or anfculate; scutelhim with

four bristles ti

t>. Arista much thickene<l on basal half, the secoml joint much lon)(er than thick, K'''i'i'"-

lated with third (loiinlhiriiK liondani.

Arista thickened at base, second joint about as long as thick, not H''"iculate<l apically

TrirlmfHilixtH Konilani, pt.
(Chniiima C'iM|uill<'tt)

7 Pteroph lira bare S

I'teropleura hairy on at leiust part of its surface 22

8. Ileail much louKer than hi|(h, face much reireatiii(E below: pi-.lpi with lonK apical
bristle, third aiitennal joint with a long hair on outer side near base of arista

:\(ui iihdln ('o<|uillelt.
Head at lea.<t us hi)ch as UiiiK. face not much retreatin(j below; third aiitennal joint

withrtut Ionic hair as above 9

!•. Orbital bristles very short, distiiiKuishabh' only with strong lens; cross-vein absent

from bii.se of discal cell' II yilromijzn Fallen.

Orbital bristles Ioiik; di.scal cell closed at ba.se 10

10. Fore tibia' with a short, stout, rectangular spine near apex on under side

AiimlliiH-mma Hecker.

Fore tibia" without such rectangularly projecting spine lOu

l((a. Fore femur ami fore tibia- eai'h with a series of strong bristles on antero- and |)ostero-

ventrsU surfaces ..\orc//i<i liobineuu-Desvoidy.

P'ore femur without .strong bri.stU* on antero-veiitral surface; bristles on tibia not in

two series 10b

10b. Third and fourth wing-veiiis curved ilownward on their peniiltimatt' sei'tions, the first
po.sterior I'ell proxinia<l of inner cros,s-veiii distin<-tly broader than at any other
IMiini: stigmatal bristh' absent; arista pubescent; palpi with long apical bri.stle;

first vein bristly at apex .S.o/m/iA/f /« lieeker.

Wing venation normal, first |H>sterior i-ell proxiinad of inner cross-vein not broailer

than at any other point. 10c

10c. First wing-vciii bristly on apical half 1 1

First wing-vein bare on apical half Iti

11. I'alpi long :inl sh-nder, armed at apices with a long bri.stle; arista plumose 12

I'alpi not .irmed at a|M'x with a long bristle, or if so the arista is bare or almost so. . 13

12. Tresutrual dor.siwentral, prothoracic. stigmatal. humeral, ami tibial bristles strong;

legs stout , Cnnliiliini Fallen, pt . .

I'resiitural dorso-central bristlm weak or absent, prothoracic and stigmatal bristles weak;
humeral usually absent; tibia' usually with very weak bristles /'(ir(i(/.c/(.»i(i Uci'ker, pt.

13. .Scutellum with si.x bristU's; hiwer margins of cho'ks with numerous long bristles

Hiici iihiiliuii. n. gen.
Sculellum with two or four bristles 14

14. Male genitalia with verv long eurh'd bristles on each side which are direc'ted upward

anil slightly forward; fore tibia' with short, black spini-s on inner side

I'dgniintn /etterst«lt.
Male gonitaha without such bristli's; fore tibia' without short black spines on inner side 1,'i

l.j. .\rista siibnude; intra-alar bristles ab.scnl . <!iiiiiiitmira Uondani.

.\rislu plumose, the hairs wiilely .separateil; inlra-alar bristles distinct

Ml fiviihllKihiiii IJecker.

It). Sixth wiiig-vcin not exlemling to margin 17

Sixth wing-vein extending to margin IS

17 .\rista plumose; eyes concave on lower posterior margin; h'^s long and slender

I'liiiilhliimii Hecker. pt.
.\rista almost bare; cyi'S rounded; h'gs short Curd i/l urclln, uni-n.

15. I'realar bristle more than h:ilf as Umg as the bristle behind it ; thoracic and leg bristles

long and atroiig 19

I'reular bristle much les« than half as Umg as the one behond it; thoracic and leg
bristles of nmicrate li'iigth jOa

•Thi)* Ui»t vlmracler tUies mit apply !o thi' liunifHiin -;MTies

hiplna

77 c

lit.

2(»

KkV To (iKNKKA — Clin.

riii-rk liiilcli lr« tii:in htilf a-i IiIkIi :i^ "■vc: |i:il|>i with vrry liin({ ■i|ii<-:il bristle

<"iir<li)liirii Kiilli-ii, t>t .

( hcrk ahoul half ;is hiKh in i-vc: |i;il|)i without u Ioiik ;i|iiciil l)rislh- 20

Mill frmur with :t Ioiik stoiil liristlc :il iiiiclille oii iiiitM-rior xiirfufiv .CitnliiiitHluma Mctulc.

Mill frmur without ^luch brisllr SniUiiihiiqi, V-.Mvn. pt.

'20a. ThinI atiti-iiiml joint niiiiiilnl at apex: ari.^ta alimwt bare; fori- libiii' with short

bristles, the inner •(urfiuv with iiuniiti' black sctiilif \tirr,i;<riimim Hi'cker.

Third aiiteniial joint aiiKulate or |xiinte<l o;i upiMT side at apex . .21

21. .\reu between ilorso-centrals eeplialail of suture with iiiori! than two series .pf setulav .

SiHilhiiijihani Konilani.
Area bitw.MMi ilorso-ei-nlrals eephahi'l of sulurc> with only two series of seiuhe

Triiliniuiljiiix Konilani. pt .
i"/"*""".7"' ''"luillett)
i'Z. hore tibia- with ventral surt.iee.^ arnieil with short stout spines on their entire lennth;
male with a laru"' bifiil ihitinous plate on earli siile of apieal exposeil slernile.

.\ttiimijiii, n. Ken.
l-oi;e tibia' without short simit ventral spines: apieal abilotninal .sternitp not as above. ■_>:l

2.'{. .\pjeal half of first wiiiK-vein bristly: sixth vein not exieniling to inarKin

/>'/.v,7/)/i »ni/(, 11. gen.

Apieal half of first winu-vein bare: sixth vein exIeniliiiK to margin 24

24. WiiiKs with a number of ilark spots, those betwii'ii thinl ami fourth veins usually

eiieliH^iiiK rmlimetitary veiiilets EriKmiura HeVker.

WiiiRs elear, sometimes with the iro^s-veins clomleil. but never with small ilark spots
enelosinu vellllet^. as abi>.-e .N'«-,(„,,/,n,/„ KnUen. pt .

Tlic Kciiot\|)c ctf liuirphdlitin. (jcii. iiov.. is ('iinliihini iin iinoiihiilii I.ocw,
a spt'cics oriniiiiilly (Icsciihcd from the Distiict cf Coltmiliia. wlii^li I liavc seen
from Illinois, and fiom PliimiiHT's island. Maiylaiid.

Gonatherus IJondani.

I icfcf one s|)<'cics to this (ii-inis. It ajjlccs witli llir )ji-ni'ial description
of the K<'ni)|.v|M' very well r\rr\}t iliat the fcmalf itcnital scuiiifiits arc not com-
pressed. XotluiiK lias l)eeii known up to this time of the iinmatiiie stages of
tliis genus.

Gonatherus atricornis, n. sp.

l*tP.\iuiM.- Terra-cotta, almost opa(iiic: apices of posterior spiracles
fllossy Mack.

("ephalic and thor;icic sc>:nicnts inissini!. Surface rather closely covered
with slight, linear, discontiniiotis. transverse ridnes. No protiilierances on haw-
of ttorsiim of alidomen: each segment with a broad transvi-rse hand of very
minute locomotor spinnles on dorsinn and venter: apical .segment irreitidarly
niKose on stirface. viewed from liehiiid with eight ilistinct intirKiiial and sub-
marginal prottibcr.'iiices, as follows: a large one slightly below transverse line
of spiracles, a smaller one below it on nitirgin and anolhcr. still sm.aller. siib-
'n.'irginal one slightly veiitrad of the lower one. and .i i.irge marginal one laterad
of amis; s|)iracles elevated, their height e(|iial to their apical diameter, sep.arafed
Ity about three times the width of thi'ir iliameter, the openings three in nnmber,
the np|)er .and lower ones diiected straiglil dorso-ventrad. the outer directetl
straight laterad. on inner side of disc there is a rounded depressii n.

Length. .'> mm.

iM.Mio. I''k,m.\i,k. Ulack. densely grey priiinose, only the abdomen and
legs slightly shining. Head yellowish testaceous, densely whitish pniinose,
upper part of occiiiiit and greater portion of frons fuscous, anterinr portion
of interfrontalia slightly rediiish; aiiti'iiue deep black; proboscis glossy l)l!v<'k;
palpi whitish yellow, fiiscons at apices. Dorsum of thorax with two [xiorly
defined, narrow vitta' on anlerioi half between the acrostichiils and dormj-
cetitnils. Legs black- apices of femora below, and all of tiliia' reddish, tarsi
fuscous. Wings clear, veins iljirk brown. < 'aly|)tr;e w iiiie. Halteros brown.

rs <■

< iiKiiiliiiii Artiic Esjudiliiiii, lUl.y-iS

Fions aliout half tlir widlli of licad, cacli uihit iicailv half a> wide as iiitcr-
tidiitalia: lower siipiaorMtal hii.-tlc dinclcil t'orwanl. the iiiipcr two siinlilly
l>a(';\\aid; aiilciuia- larp'. third j( iiit hmad, its width uvtr half thai i>f eye,
apex not acute, entire length on inner side nearly four times that of second;
arista nii<'roscopically piilpescent, second joint ahoiit one-fourth as lonj; as
third, the latter swollen on its hasal Iwo-fifih>; profile as in J'l. X, fi>r. :}4;
hairs of lower part of occiput mostly white. Dorsum of thorax with two+'
three dorso-centrals; a( rostichals irregularly two-rowed hefore suture: discal
setiihe sparse ami loiifi; scutellum wilii four ioim l>ristles and a uumherof Ioiir
setulosc discal hairs; steriiopleura with two lone posterior hristles i)laced verti-
i-illy and many lonjj strong iiairs; prot lioraci- and stinmatal luisths stron^r.
Alidoinen with numerous ionji hairs, those on i>osterior margins stroiit; hut not
inacrochaeta'. I,e(js normal; fore lihia with two .antero-dorsal. two postero-
dorsal. and one post(>rior l)ri>tl< : mid til.ia with one ventral, two aniero-dorsal,
two postero-dorsal. and one jMislerior hrisllcM hind tiliia with one laiijc ami
one to t\yo small atitero- ventral, three antero-dcusal. and four to five postero-
dorsal hristles. Costa with fini' setul.T and more widely spaceil spiiiules: outer
cross vein straight, situated at nei'riv its uwn lemrtl. from end of fiftli vein,
last section of fourth vein nearly twice as imijr as preceding section.

LeiiHth, .")•.") mm.

I'ype locality: Hcrnaul liarliour and rape l\l■UM■M^ter1l. l)olphin and rnion
strait. Northwest 'I crritories. .!uly :{. l!tl<'i i 1'. .lohaii.sen i.

1 have seen a >pecimen whii'li [ consider lielontis to (iiuiiillii nis iiUininftK
Fallen, the genotype, in atiotlur collei'tion from \laska. From (ifrlctirnis it
difTers in havin^' the i)alpi entirely whitish, the lefis paler, tlii' win^fs conspicuously
liiown alonjr costa and on each -ide of loniiitudin.'il and crov— \ eiiis. and in lieinn
much lessstroniily liri-tled, the acro-tichals in front ot suture liciii(i les> numerous
and weaker The tw sjiecies are \. r-. hwl\ >. j.iii .1 l.iit in mv npiniun readily
>cp;iralile l)_\ the characters iinlicated heri'iii.

fJordylurella, n .< n.

< ■' III I '< I till null ,•■-.

I'KJ«*|.»';. He;id. viewi .1 from aiiovi -uii.p|,.t i= ;a!. -linhlly ti;iHt ned
(«.-i.riorly: frons one-third <•■ more than une-ihird \\t> head-w'idih: orbits
■ lit^Vrentiated tin l.ristk's well ilevclo)H'il, -mular to those of (uriliiliim: antenna'
-hfthlly sh'.rfer tli.an face, third joint round. i| ,t|Hcally. ari-ta puhesceiit ; [la^*!
wilhoiil .-ironsr ;m*|'-i1 hristk Tlioru^-,. .-ha't-^i-ixv a~ m Cnrihiliirii'. First
witiK-vem hare -|. n.rt reaclm,/ niargir. of w^nij. 1,. u, Mniiiar l.. tho^- of
' iinli/liira .

'Fen''\|w < 'iriihil:iiit itfttuit^Mi I iifpniU'Xt .

Ihcf. 1- a male -pecimen o- i ^jHcies win. h i rclcr to ihi- i£enn> in the
'■I'll' 'tioli- • can no' Mientify I' :t' anv p|■eviou^i\ de.-cril.ei| >p,-cif.. :ind (ic-crilii'
J! lull u nil .i~ new .

('Ordylurella subvittata.

n. -p

\f MK-. HI:H•i^. til().s>\. Head \<llou . occiput, oceljar Iriamilc. and yic.-iler
|M,riioM ot trontal orl.il- filos>y l.lack r he orhits and iri.iiiylc :-lii.|iilv pollinose;
lad .ind cheeks with distinct while pruinesccnce: anteiuuc yellow : aii-la l.lack'
palpi yellow: proboscis yellow at baM , becoming brown at apt \. 'i'lioiax slos.-y
bl;ick. latcr.al marmns. a narrow line .ilonji course of ilorso-cenlr;ds. and ;i broail
ccnlral villti covered with ver;, -horl mvy j>ile. tjivinK the dorsum a subvittate
.'■ppc-irancc. .M.domcn flossy Mack: -'•irfacc with lonj: but not dciir.c vcllow
hails, bristles on penultimate dorsal segment l.l.nk; hypopvuial forcep> vcllou
except at base. Lejis y.-llow. iimi ;uic| hind r(,xa' brown.' W iiii;- cic.ir! < .'in^
brown, llaheres brown.

X ■'TJSfm^^M X^SHU

Dilitno 7,,,.

Frolic ..v.T i.iu-lialt" tlic width of licad. (.il.ii> ikiuowcI aiitcrioilv ttmui
iniiih MV(.ll(.i, on l.asal tiftli of thud j.,itit, iiu.i(.s( (.(ncallv |,.,i „.«•,.„ J ; pali.i
>hnhtly (lilaird, weakly iiiistlcd. Thoiax without pivsiitmal a. rostichair* d..r-o-
r.Mitiais w..;,k. Sciit.lliiiM with two a|)i.al l.i-isljcs. AJMloinci, soincwhit
incrassatcd apically, the liypu|.yniiiiii hiinc, forceps lonu, curved forward rather
-leiKh'r. l.ens iiorinal. so i)laced in type that it is not ,)ossihle to sav <h-filiite|\
what thearraiineni.'iit ol th<' hristles is, hut the\ are weak and not riiinierou- the
lore -ihia lackinti them on posterior surface. \Vin)js extending hevond atxA ol'
al.doineii, inner cross-vein sh^hilv I.eyond apex of first vein and almost e\,,cil\
at middle ot discal cell: penullim.ite -, iiion ,.f fourth vein tline-fifth- a- jon..^ ,-,
ultimate section.

Length, I mm

Type Localil\ Kt inard ii:irl.oiii |)olphin and Inioii -lr;iit Xoithue-i
lerritories. ,lul> Is I'.i. I!ll."i F .lohaii>eni.

This speeie- agrees Inller Aifh Cn, ,1 i/lin; lit, th.in with aMV .ither in llie
appended key In uenr'ra tlloujfh VMlh i,. tie, ;/.aleii;d and both .^t xes available il
ma\ lie iiecessai\ lo .-( iiariile it ireiKTically from nihiil,,.;,, . The latter is readilv
distinmushed from s„l„,lh,l<, hv il~ denselv pruii.w.-< thorax, more stronsilv
M>iii<d let's, th.' antei.,-dorval l.ristle^ on the femora heiiin iiolieeai.lv stronger and
iMore niimeroii-. and ilie presence of a Mroni; ).o.Merio, l.nslle on'the fore til,i-i
I lie -ciitellmii in i,, Imb'sii lia< four l.ristles.

%

Dasypleuron, -i. -en.

(/• ;,( /■((■ ('hiliiitli /■.-■.

Head in lype->pecie~ ~(, l,;idly crushed that it is not pos<il.li lo -rivr full
de-cription in general il appears to reseml.le that of (■„nh,:„r,Hn ?iul ihe
antenna' are not visible ..uintj lo the lace liein>£ cru>.i„'d in. the apic;.! portion of
one arista, which is (li>tinctly ])iilieseenl. alone liemii vi^^ilile. The tlmr.ix lia- ihe
same cha■lotax^ ,i- ('.<,. h,Uini l<itlfn>ii.< I.o.v. , hut the pteropleiini ha> a
iHiml.crot lonusolt hairs on the middi". .VlMlomen short and stout, hypopyniiim
occuijyiiin over half of the ventral siirfaci\ tin- lorcetw chitiniiied 'and '-tout ,
si'iiil.ar to. lint larger than, those of r„r,/v/„,v/^i uhnttnMi. I.eiis nonnul. First
wini£-vein l.ristly on afiical portion sixth vein mcoini A-te

(;enoly|)e. I)'lsii/ili iiriit, lilniil.s. n. -o,

Dasypleuroa tiitialiK, u -p

Mali; ( do.'^sy Mark Il,:id l.t.Hk iron- nrowni-.6 red. .-rt+Mts and I rianule
lihirk. ^Iljihtly u>ey pniino-e: pai;., i.|;n-k: prolioset-- irlossv lilin-k. Thorax
<li.lhtly priiiiKise <in doi-uni. not vitiate. Al.doinen entirelv Ldoss\ , l,eus

I. lack; apices of fore fenioia. and all libia' n-ddi-^h vellow . the mid and hind p;ur
d.arkcr ajucally. W nmv ,-le;ir. >eii;- l,|,n.k, llaitcre.- black. Hri-iie- black.
Ii.aiis Itiscoiis. those on \iiilral -urfaces ot' femor.a pal. r.

Orbital bn-lli- lon^ .ind .-lender; palpi -pmdli -li;ip,d. with ralber we.ak
bn-tl.-s: probosi-i- nortiial. Dorsum of thoiax with nuineroi!- lonj: setiilose
l':'irs on front n.ar^iin laterally ami l.itemd of |iiv-ulura! dorso-centnds:
pre-iiiur.il acroslichal:- sli .u; anl.Mior postsulural dorso-ccritral dilpii'-ated
in type .-o that theic appear- t<i be uvo stronu ami two weak p<i>t-iiiurals:
Mauclhim with four -iibe(|ii,Ml bn-ili-: hairs on pleurae loim: prothor.acic
and stiirm;:lal bri-tle- lony: .and -lender; almost entire surface oi nie-opjeura
hairy. .Midomen with rather lon>; h.airs. b.as.al hy()opvfilal .^cKinenl with a
nuiiibn of strong bri^tlo; apical M-ible venlral semiient aniie.i with ionii
hairs. Lets normal: femora with loni; li:.ii- on the ventral and anterior •»iirfare-.
tiKise on anterior ,-iirfac.' ,if mid |iair aid .■ml, lo-ventral surface of hmd pair
bri-lledike; tore .and hind tibia' ;ipp.;i 'i:' l\ without bristles, mill pair with one

^-

S((i

Canadian Arctic Kxfifdition. Iftl.i-lS

hristlc on dorsal siirfiicc iicmi a|M'X. Inner iT'fw*-vi'in distiiu'tlv liovond n\»-K of
first vein and at thrcf-sc vent lis from aiU'X of dim-/il I'fil; pcntiltiniutf sct'tion of
fourth xfin about half as lon(j as ultiniat<* ftection.

Length, 4 • ") nun.

Type Locality: Collinson poini. Alaska, .lunc '20. I'.iU iF. .lohanscii).

AUomyia, n. kih.

I (icscrilx'd this Ki'UUs in a |)ai)cr, which was c<)ni|>(«'tcd some liinc ago, on
Prihilof Island Diptcra. hut it will not n" to press until after this paper. I had in
that collection the t'ctnale only. The jieneric synopsis in this paii«>|- and the
following descriptioii may he accepted as einhodv iii); characters of the genus,
though It is possible th;it the furcate proces.-^es of the fifth alwioininal sternite are
no) pri'sent in the male of the other species.

Allonayia wnguiculata, n. sp.

M.M.K. — Ulaek, th< "-ax ar»»l al)donien greyish pruino.'^e. He.-id brownish,
lilack, anterior portion of frons. lower half of face, and anterior part of cheeks
yellowisli: antenna' black: palpi vellow: proboscis blai'k. Legs l)lack. tibia-
brownish, yellow at bases, tarsi brown. Wings eleai'.

()rl)ilal bristles rather weak: antenna' large, third joint aboisir twice as long
as secoii'l, subangul.'ite at a|)ex on iippei- side (11. X.hg. ;{7): ari>r.a ban-, lapered
on basal third of apical joint ; cheek about one- fourth the eye-lM*i«ht. Dorsum
of thorax with fivt- w(-ll-d(-v('loped dorso-eeiiirals: scutelluiii with shoii discal
hairs and four strong marginal bristles; pti-ropleura with hairs on (-eiitre; sieriio-
pleura with long hairs and one strong bnsth'. .Vbdttmen subcylindrical, narrow,
fifth sternite with a 1,-irge bifid plat(- on eai-h »ide (Fl. .\. fig. 'AH), hypopygiuiii
small il'l. X, fig. 'M'i). Legs as in ha-ij/itUn-nui, but the fore tibia' with sliori
ventral spim-s; tibia- with the bristles as follows -fore tibia with one antero-
dorsal and one to two posterior, mid tibia »ith one antero-dorsal, one postero-
dorsal, and one posterior, hind tibia with two aiitero-veiitral near apex, two
aniero-dorsal. and one p<istero-<lorsal. Inner cross-vein well beyond apex of
first and at less than two-fifths from apex of discal cell.

Length, '.i ■ ,') mm.

Type locality: Chantry islaml, Ht-rnard harbour. l>'>iphin and I'liion
strait. Northwest T(-rritories, .lime 17, l!Ut> (V. ,loliaii.-en i.

This specimen was in very poor condition, and in order to -jet the slnn-tures
into condition for (-xamination I had to boil ii. Oiigmallx pinned, it is now
pn-served in alcohol, in a fragmentary condition.

Till- foregoing spt-cies ditTeis from tin- jiciictyix- m the culoiir of hi-ad and
legs, ill h.-tviiig the palpi narrower, and the wings longer and uiili thinner v(-iiis.

Ernoneura Mei-ki r

This g(-nus has only once previously bi-en rec(jrde<l from the \M'siein hemis-
phere. There is only one s|)ecies of the genus, which wa-^ origin.-iibi' di-scribi-d
by Zetl(-rst(-dt from the Luropi-an arctics.

Ernoneura argus Zettir-iidt

R(-pres(-iit(-d liy five speciiiu'ii' taken ;it Heriiaid harliour. Dolphin anil
l"iii<in strait, XorliiwesI Tt-rritorie-,, thn-e specimens, .luly l'.(, Iftl.'i. and fwn
specimens. .July, liUti.

Heck(-r stales that there is no -^ternoplcural bri-^tli- pre-^eni, but it is well
ih'Veloped in the specimens before me.

iHplcin
Scatophaga I'allen.

81

Thr m.MMlMTs (.f this pi.U.s arc nnirh inn,.. .■ ,n..i, ■„ l,.n.ro'nUc l-.lilu.l..s

par ...ular V al.un.iant hull, in .n.liv„l..al. a,„l s •„. in ,|„. , v, 'n .^ n X „'

purtH.Ms ..t tl... w..s„.n, iH-nnsphn,.. I„ ,t„. prcs.-nt .■ .,,..„ ,h,Mv ar , r •

h|)i'ilcsrf|)r(.sctitc(l l>y tlurty-scv.'ii siH-ritiiciis.

Th,. larva' feci ii,.oii .ic-ayirm VL',.|al,l,. ,nali,.r an.l i.i niaiiiMv tl„. Hi,.,
an- |m..la.v.,us, t.ul also l,....l „„ ll„. -;,„„. MiLsiatuvs as tli,. I.rv,. '

Inonl.Ttoinakcil (...ssihl,. toi -t udc.ts r.f th.. ..r.l.r to r..r„.r„i/,. the s,„.,.i,.s
'<••«..■.; .».. I ,.,v.- a k..y t,,r .h..,r id.n.ih.anon, usinK. .•lKua..t.rs';i mih ,.m /. o
M- M, a k..y ... par. .,t thcsa,,,. ,..„„.. ,„ a paper wr,..,.„ for th.- T S. , . .

ti::^;'u:V:z;i::: """'"' '^'''"■' '^'""■'■''' ^^•'"'•'' =" "- -- -"■ -in;:;

KkI to Si'Ki IK-i.

' ^'"' loni, «11'' h;!:"' "'"' '•' '"""'"■' '" ^'"""^ <""^-=.-.<l."K l.ri>,l,. i„ „.l,|i,i.,„ ,„ „„.

Mi.l ami i.MHl til.K,. «Hl,n„i stroiiK l.iistlcs, w,ih „mIv s.,li l,,.ur> ,(;,.„„„ „nr..nn.s,.ni.,l'

.. n,ss-v..,„> .,f w,„Ks n,„ ,„|us,..„.,|; |,.^. ,|,„„,, ,,„V.,|v l.la.-k ''■.:,

T ::V MlT' '"'■■■ """■'■'■"'''> '"f"- ^-'-': I'K^ :.l.n..si ,.„„r, Iv, ,„■ ..,„„■, lvU^'

Arw.-, C- '^ "' I""'"!'''"'''' >'•'■■'• /;-' lal

ni'Hi~.
1

■1. Ilm,l f,.„,„r witl, >,.v,ral Inn^ ;„„,|,., „„ a„„.n.-.l,„>,.l MatM,.,- „f ;,,,Mal luilf- „l, ,.,-
pli'iira uMil liv|Mipl(.|ira l>ari. ' ,: I"""-,

H"..l frmur w„l,„ul s,„h lyi>,l..>; ,.l,.roi,l,.„ru ...„,..„,„> with u f-w )„„« j ui^^ o.^'-
cMtr,.; u,,,,..r ,H,r„„„ ,.f hy„o,,k.,Ta wnh a f.w lon^ hairs .' r/S^t'^M;;!,',,,,,

Scatophaga sullla (Fal>ri.ius).

Mim-ti .■,!,, U„ Fatiriciiis. Ijit. Sy.-I., \(,1. -t, ji. M.i. 17<H.

V",V '"'''•' =" '."■ ''''"'='•'■• ^■'""<'' .Maska. AiiKusi L>1, liiu; i F. .Johai.s,.,,)

A Mirop..aii species prcvioiislv reporli.d from Ahiska

I have h^urcl the hfli, stcrnite of .,ulla ainl /,//,„v„ Fall,-,, to ilhlstrat..
c spechc .l.stmet,on , I'l. \. fi«. o, .T, an,i li:,,,.. Ulana oc.urs ,„ Ah
l»iiio, ami New Jlaiiipshire. -^i.'.n.i,

Scutophaga f urcata < Say ) .

I'lin.pn furnil,, Say. .I,„„ .\,,.,.|, Nat. Sci. I'hila,. vol.:!, p. -i.s. ISJ:).

•>. ..-""um'"" ^,l"''"'""^ '■""" 'I"' t"M"wir,f; h.-'alitic.,: Nom... Ah.ska, Aiiu.ist
- ... I! !(,. c.ghl spccnncns , F. ,l.,hans,.M ) : Marter ish.ml. Ahi.ska. .lulv 2
i.tlJ twelve specimens. June ,S, MM I, tv.clv.. s,.ccimeMs .1). .h.nness): ColhnsoM
po.M , Alaska, June .,, ,,U. Uvelv.. specmens , F. .loha„..,n; pom, i>, Ih-

W <'Mas,o„ |«.nms..la. \ Htor.a islan<l. AwkmsI IS, l-iir,, o„c speci,,,,.., I) M ss,

Ihis vcrv .on ,„ species oc-ins ihrouuM.Mil \oiih America wli into

the arctics, ami is e<|iially common m F.iirope.

Scatophaga ruhicunda Mallodi.

Si,il„iihii,i,i i„i,„i,ii'li Mallorli, In iircs..

This .prcies is r..prese,i,,.,l in the coljc.-.io.i l,v three specimens, one male
trom( ...cKi,.,rnp<m.l. Dolphin ami Inion strail , NonhwcM Territories Cana.liin
S;o"^'"•■7?:,''•';'';'T•'• ""^•■•.'•"•.-■".alean.lone female from liernard
W20; IOIh'If. tlilr:, "•■"'• ^'''■'''^^'" T..rn,ories.,hinc 17, MM., ami

I h;uT provioii-ly seen it f,-,,,,, p,il,i|,,f isjamls. Herim.' sea

\

\

82 c CanatUan Arctic Exptdilion, WlS-tS

HELOMYZID.«.

The laivtc of tliis fiiinilv live in carrion and manure. Somo of the spcpies
are found in cavts and in underground ni'fts of rodents.

The family is represented in this collection l>y imagines only. In order to
facilitate the indentiheation of the genera in this paper a generic synopsis is
given herewith.

Key to CIkneba.

1 . Humeral bristle present 2

llumeritl bristle absent ;j

2. Tiit)r:ix with five dorwi-ceiilruls Hiimnuzn Ixk-w'

[Hiorax with two dors. went r.iLs ArharUmiix ( '(xiuillett .

3. 'Ihorax with one pair of liorwwenlriils I'omenuii Durliniiloii.

Tluinix with at leii>t two pairs of dorso-centralM j

4. Mid tibia' with loiiK bristli's on middle Oecothra ilalulay

Mid tibia' without bristles excejil at a|M'X 5

!>. Thorax with live or more pairs of ilorso-eentrals \)

Thorax with two pairs of dorso-ceiitrals XeoUria Ben 11

Thorax with three pair. ..f dorso-eciilrals . . '. T>'iiiir<4-hl:imul, Uiin-

Thorax with four pair- of dorso-eeiilrals j.j

li. Seutelliim with six bris'.im; inner eross-vein much before end of firnt vein; nieHopli'ura

o . Vi"^''' ■ ■■',■■'.■■■■■, •' '""■"«i'»Hoi(/fs .Nluiloeh

heutelliini with four bristles 7

7. Inner cross-vein distinctly Ix'fore end of lirsl vein; frons in nude very narrow ; prople'iral

.-iiid mesopleural bristl.s pre.cnt ; . .11,1, n,;,,/i,i Kallcn

Inner cross-vein at or beyoiul end of first V(iii; propleural and niesopleural brisllis

absent; eves of :iiale widely sepal ;i led .-UVA^/a l>.ew.

H. h,ycs very smalt, not uiucli larger than antenna'; arista remarkably long; vibris.sa;

,. ^''''""K ; ■ , ■ ■ Kaopiomera Ukw.

J'^yes much larger than antenna;; arista short; vibrissa; short and weak; face receding

oral margin not develo|)e<i AmrosloHui Ll)ew.

fcyes large; arista long; vibrissa; strong; mouth margin well developed Leria Locw.

Oecothea llaliday.

There is a laint; series of a species of this Renus in the collection. I cannot
identify it with any of the previously descrilied Kuropetui species .nid it differs
essentially from fmv.ilmlig Fallen —a species occurring in Euroiw and North
America.

Oecothea aristata, n. sp.

Mai.k a sn 1'?;mai.f..— Head, anterior lateral angles of thorax, greati r portion
of sciiteiium. hypopysium of male, genital segments of female, and (he legs
reddi h :.'-!.. coiis; upper portion of head and greater portion of occiput, thorax
al)domfi..coxa>, sometimes median portion of femora, aiitl whole of tTiri^i fuscous.
Wings yellowish, cross-veins not inftisciled.

Frotis ahout two-lliinls the width of head, orliits with one bristle near
middle; inteifrontalia wil h s|)iiise, short liairs; antenna' small, third joint barely
longer than second; .-irisia very slender, iietirly i>iiri', ••ihoiit 2-.") as long as head,
with a very short swelling at l.tise; (ace with a broad central carina which is
flattened and broadened below, covering the entire centre of face, cheeks with
one strr^r-u vibrissa tind a number of short setuhe; eye iiboiit efpial in height
to ilieek af posterior margin. Three pairs i.f postsiitiirals present; propjeiiia
with ■•lie bristle: a few short setuhe bilow anterior spiracle, m.sopleiira with
or without a short bristle; st'inopleiira with one long bn.-tle and ,'i iiiimtM'r of
4iorl setul;p; pteropleiira bare; hypopleiim with a numlier of inimite setula;
below spiraclf; seutellnni bare on ilisc. margin with biur bristles. Abdowen
of ni;:ii siib.yl ndreal, tilth siernite with short, slntdtv setul.T oji apical half
hyiMipygium laiije. knob-like: .ilidomen of female inore tlattencd, genua!
segnieni-^niall. All feiiwtra of male slightly thickened, their anteio- and postero-
veutral sujiaces each witi a .series of short black bristles; femora of female not

/>//>^ ni

S3<'

M. sK.ut !in.l ttilh much w.-akcr iin.l mure wi.l.-lv Hpatrd hmtU-s; ,ni,l til.a-
in Loth sexes with „ur to („nv sln.njr aiitrnMlors:.! hiistlcs aii.l lliiv.. I., livr
irn-(£ua,ly placed iii,e(|.ial-si/,e.| poslerior l.iistles: liiii.l tiluH „f male sliulillv
cilive.l, with a very pn.iK.iiiMv.l apical calloNJIy <.ii ventral surface, tlie entire
ventral surface with .U-usv. short, ..reel hairs: hin.l tihia of female without a
pronounced apical callosity an<i with much less distinct v.^nlral hairs Costal
si)ines loi.K and widely spaced; last >.-ction of fourth vein ahout I -, as h>ni£ as
preceding seciion. *

I.cnjjth, ')-7 mm.

Type locality: Mernard harl.onr, Dolphin and Inion strait. Northwest

crr.lories. July 0, H.l.i ,|'. lohansen,. Paratypes, sa h.cali.v as type,

August I , aiul n, Mil.,, and Septeml-.r, I'.do (F. .lohan.sen). thirtv-Hve
specimens.

DifT.rs fr.un /,„,.s/,„/,.s Fallen, in l.einn much larger and, in the mal.-.
in havinc li,e hind lil.a- with a very deci.hHl apical pn.duction or callositv and
111 liutli si'xcs in haviiiK the cros.s-veins not infiiscated.

I.eria Holiine.tu-Dcsvoidy.

licplesenled l,y diie ^peiio in lh.' collection.

I.eria fratema ii,oew).

S(iillni;„lin (nilirii.i l.nrw, M. rl. V.M . /,iil>i-lii , lsii:i. |i. 'JT.

A male specimen, with d.ita ,i< follows: Xome, .Maska. .\ut;ust IM •-»(•, j'tlC,
( r . .lohansen i. . - . .

Thi- sp<-cies l,a~ (.r.^viously heen nM-unlcd from Ahiska, and is t. nerallv
disttil.uied Ml the I niicd Siaio ;ind ('.-inaila.

Neoleria, n. ncn

(iriicn'r (hdriicif's.

Similar to K.^ria. dilYeriim in havmtr nnlv two pair> >.f ivell-<|e\ elnne.l
pnstsUtMiah (lorso-central. thoracic hri^-t ler..
• iciiulypc: .Sniltriii i ol mnhrurni^. n, sp.

Neoleria rotundicomis, n p

Maik I{. :'.|i>h l--t,,,..,,u:., .-.iiliopaiine, upper p..,-.,,,,, ,,f frr.ns. .w.-ip,||
'lor-un, .,1 tie.rax excr,-i tiumeri and M^utellun,. «nnt, , |.Mtion of pl,.ura>. *.,d
jilMlomen , \,e||t (he hypopyjtium. fu.-cou- uiil, s-iev i.ruin.-.rnc- W.nus
laiiiMv v< ll.iwisli V4'ihs [tale hi,,a!,.

Kn.ii> |e.s> than ..m, -h.-.l! th. head-widtl, oii.ils dilV.'ivnt laf d, .•ach with
two stroiiK l.ristles an.i . tew -horl - Mihe, mterfr(,nta!ia wiih -h,,rl -elula-
antenna, laiite, third j.uiil alni.-l .n lihular, sivond v. 'A Muall ,ri-fi .ihout'
a> ,onjra<lenKlli ol fron- wdh :, -h.trt swellinu ,i l.a^e. apical part i.,,i a~ -lender
as 111 (),,.,tl„„. ailh imrr.......opic pu(»-sc. uce: eve., almo-l round, of moderale

size; lace alnio>i perpendicular; ch". k al.out half ,is hmh as rw with a few
>hort marmnal l.ri.stjes and om. Ion- vil,n.*^a: pn.hosci., stoul;' palpi normal
I orsum ot ilmrax with nun.. r..u. mo,i. niteh lonu seiulose hairs and two pairs
ol ,„,sisutuial dorso-cetitrai hristles; scitelhim .sliort and l.n.ad. roumh.,1 in
outliiM- and -.iihconvex on ,|im . I,a.. . v.ept f,,,- iIr. four maririnal hristles pro-
pleurai l.-MMIe sIi-iik: iiu-opleuia i.aic except f,,,- a [.'W setuhc on anterior
lower unule; sleriiopleiira uilli one stronu liiisll.. and !i few Mlulose hair-
|il..ropleu. .,,d hvpopl ■. I.air. AlHlomen with ^\u,v\ Mlula' an,! ;, f,.vv

H4

Ciinwiian Arrlir Kxitfilitiini, tlH.i-IS

Umitvr hn^tl.s im poslcnor iiiurKiiiH of w»£ii"'nt«; hv|)«pv»{iiiiii of ni(Mipriit«« hIw
MihKlohosf. LcKs with II few hristli's l.iit will. iiiiini-roiiN short sctiilow luiirs-
for.' femora with loii(f liriHllcH on postcroHlorsal and postcro-vctitral mirfafCH-
mul fcriiur with at least one nioiU'ratclv stronK l.riHile on anterior siirfaee at
lUKldle; mid and hind til.iu' with preapical .lorsal l)ristle, fore pair not viwihle
Inner eross-vein before extreme apex of tirsl vein and sliifhtlv lievond middle
o« diM'al eell; outer eross-vem .straitthl. at more than half its own' lenntli from

end (1. hflh; last seetion of fourth nearly 1 •.") as Ioiik as pr I in(j section ■ eostal

spines very littli- longer than diameter of costal vein.

l.eiiKth, 4 mm.

Type loeality: Nome, .\lasku', August 24 and 25, ntUi (F. Johanrtcn).

PIOPHILID^.

The larviP of all species of this family known to me feed in carrion, or on
preserved meals, chee.se, etc. I have found some speei.'s in numbers on dead
animals, espeiially -.n the .seashore and on the banks of rivers. There is onlv
one s|)eeimen in th< luesent eolleetioii, which is heri'in descriiied as new.

Piophila borealis, n. >;..

M.\LK. — Cilossy black.

Head black, interfrontaliu, lower part of orbits, face, cheeks, and palpi
reddish yellow. Thorax black, humeri, lateral portions of scutellum, and
posterior lateral angles of mesonotum IraiislucenI red; propleura pey pruinose
Abdomen black. Legs black, frochant.Ms, extreme apices of feinora, bases
(brojidly) and apices (narrowly) of all tibia , ba.sal four joints of mid and three
joints of hind, tarsi red.lish yellow. Willis dear, veins vellow, Halteres
yellow.

FroHs plain, with weak setula" proximad of triangle: anterior orbital bristle
very siiwill; central postvertical pair of bristles twice as long and stroiiK as
laterals: vibrissa strong; cheek almost as high as eve. Thorax smooth, rather
den.sely covered with .short dark hairs: scutellum siibtriaiiKular, convex in centre
of disc; apical bristles distinctly longer than laterals; propleural bristh-s of
moderate length. Abdomen broad, the surfa<-e unmulose and armed with
rather clo.sely placed short wtulo.se hairs; hvpopvKiuni small. Legs normal
both m stretiKth and armature. Inner cross-vein slightlv bevond apex of firsf
.sections ot fourth vein t>: ,"): 7 from base to a|H'X. " " '

Ij'iiKth, '.i mm.

Type locality: West of Konnanevik, Camden bav, Ala.ska, ,Inlv t. 1914
I r . .lohansen).

This species differs in the colour of the humeri and scutellu-ii fro ,s anv
des<'nbed in the recent paper on the family by Melander and Spuler,

EPHYDRI1),€.

The tncnibers of this family are found in
'*lieiii)£ alin">t without exi-. ptioii .■i<|Ualii
Ik Tlitri IS only one siwijcs in this collection.

Ill- ^ hHlit v of w;itei. • !ii- I

ar\a'

Scat«;lla brunntpennis Malli«*fc.

I described this species m tlw paf)«'r .* Pribilof Inland !)i,,h.|:i ,r.vi.rt,sl,
referred to, but whi^h has not y«-t appearpfl in pnnf.

Localities: Deinarcution [M.int. Alaska, an. I < ■H|liii.s„f. |«,i,ii Alaska Mav
H). .iiid .hine _'(). l!Mf: CoHinw.n fioint. Al:i.*ka. fViJiemlier.
liuHiour. \orth»«'st IVrritories. .luly. l»l.» K Joliainsen ).

my.',. H<>rnard

Uiftkrn **•• *'

CHI-OROPID.K.

'I'licK' is iirilv Kiic s|iiTics (i[ lliix I'iimily in I lie collcilioii.
Tlir liiivu' i>f this s|MTics Iccil ill siciiis of win ill ^ihI «riisscs.

Botanobhi (Osclais) frit tLiimr).

MiiMiifi-it l.inii. l-'iimm Surriu, 17iil. |i. I><.'il

One s|M>(im('ii in very |M>(M roinlitioii. ■,■ i

This Kiiropriiii .-pi'cics ..crms llnoiinl t llif I mlr'l Mates ami < anaila,

fxIciKliiiK iiilo Aluskii. 1 I 1 lull ,1.'

Lopiilily; West of KoiiKii'iovik, ( ;iiii.l<n liav, Alaska, .Inly t. I'UJ (I

Johansen),

ipp«pp««i

■m

m (■

. uu„<i,ii>i A' I III hjcfHihhiin. I >l,l-IS

•• .-i.
" ».

s.

1»
10.
II
I -J.
13.

K.\J1.A\ \rlON u| I'l.All \ II

Siiiiiitimr, <|> I iiiiixilittof l.irvn,

Smiii', laliiiiiii of liirva.

Hmiif, rimii'lililr i.f liirvii.

Simuliiim. p. J, Ki.irHcii- nwiMruK.rv nrKin i.f i

/'»J,rf<i», ;/,,„. Hp.? .audnl hii i.f |Mi,;„

Uh,it„i,h,„init,i . I in(i(,,i, ,;,.,, „|„ \ ,,( itwloi

Sun III I II III. -() », uiiti'iiim (if liina.

l)iiliihiii>UK ,l.,<i,nii.i. 11, , rum ,,f i,i„lr

Suiiic, liypopyKiiil liim IIm i.f m.,!,..

I'-ilnliiriyi ,< sp ■.' i|,„racif rr«piniU)r.v i.imk <i piinn, fr„„l vp.w

Sini'diiim, Kp. 4, tlioracji' ritipiriii
Simiilf- 'I, sp. ;i, Miiriif as aboi i

I'lipi.
riial*'

lali'ial \\v\\

ry organ nf i

I>a

KiK.

14.
Vi.
I<>.
17.
IS.

n».

20.

-•1.

KXI'L.VNATKiV OK |>I. \

K VIII

Mi, jlllt.,1

Oiihimngrnii liiriin.li. anal spiradf.-* of larva, on
hiiiihitrncini ,i,l„lii. <pirarlni of piipariillii
filihummyw ,p,'.' (■.•phalopliiirviiKral .--kcl.l, > of larva
itiiUtmityina tanimli, larva, dors.al vifw.
<''lhf-nniiiijui Kp.? cauil.il in. I i.f larva
I'l.nrmh, riiruliii. latir:.! \ 'iw i,f |,(Miil of ni:,|,..
l-i/iliMrru '.raiiKi'i rsiUis, himh.
I'tdtrrui arrlirii, licail of fcniali-. lateral vii w

■ Iv
lor-al

of onc-lialf.

24.

2:>.

2ti.
27.
2S.
2<t.
•iO.

:ii.

K-XI'l-ANATli- ^ OK I'l.All. I.\.

Uijiliritin ,Ji.ii-iini, pupariiiiu, laloral view.

■■^anic. anal .spirarlc-s.

Same-, (■.■phalopliarynui'Hl skeleton of l.irva, lateral vie»

Ninie, upii-al He|{inenl of larva, ilorsal view.

Same, aiH. iienultiniale .senii.ent of larva, lateral view

Aririn iHimihs, |K.slerior tilna of male. Literal view

MuiliFDiii 1,1,.., -lira, lieail of male, lateral view.

Same, tiflh .-ternile of male, ventral view

l'„f,„iH,m,ji„„l,„„tr„l„. (MBiferior purlioii of replLalopharviiKeal skeli'ton

lateral view.
-MijiUniia ohsnirn, aiH'X of iinile a.l'.i.min, l.itiral view.

>f larva.

KiK

:i2.
■v.\.
M.

.!■).

:jti.
:J7.
:«.

JO.

K.Xl'I.ANATIO.V li»l( I'l.All. .\

AUi„l,s,.i. sp.? Iieail <rf fen.ale, lat.-ral view

AUiopms iJn.m. head of male, lateral view

(•oiiathiru.^ atncor,ii.H, head of female, lateral view

Si„l„i,li,i(jn .■<intla, fifth sternite of male, ventral vu>w

■^I'tlnithngii hitnriii, .same a.s above

^l«i.m.ym „„,,,„r„/i,/a, apiial segments of abdomen of nmle, ventral v„.w

Niiiie, antenna, leteral view.

Same, apieal «<.(jment.s of abdomen of m.de. lateral vi. vv

llulimiim mr„xluh,Ui.H lifih abdominal stirnile of n.ale. ventral view

S,ime, fiyi>opygMrn of male, one side, eaudal view

I h I'll III

.•••^•«M**^

/•i

s'

I'l «ii Ml.

V '

'H-

A

y

(|/^^'^

1

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(Kxcltuling tlic Ti|iiili(l:i? itiid Ciiliridiii.

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