JOUKNAI, OF ENTOMOLOGY AND ZOOLOGY 115 



• •aril s.-inciit. 'I'lu'sc spines ;nv iliivtcW latcrad an<l r;iii,l;i.l. 

 tlu- tcnniiial spine in. .re slinrply .•.•hi.L-hI llinn the .,llier two. 

 Steniito.s— Se.iiineiif III with a small snhapical spin.' <>n either 

 side, tlu'se hi'in.u- \-er> \vi.lel\ sepaialeii, nlidnt uiidw.-n hetween 

 III'' median liiu' and the latei'al uiai'.-in of the se-nient ; s.-inent 

 !\' with the same spine> Init lai-vr and umiv pi'ominent" se-- 

 'iK-nts V tn \-|l sihiilar hut with another pair i^' small spinas 

 ainnit mi.llen-th of the s.-ment and mnri, nearer tn the nn.hlle 

 line eftlie lindy. S..i;ment> II tn \' 1 1 witli a snhhasal ti'ian-ular 

 pit nr mark, wid.'ly separated. Mi-hth tei-,-ite with the •■audal 

 mar.^in I'uun.led. eencave. the lat.'ral an-les pr..dueed ha<'kward, 

 npwar.l and slightly nntwai-d as stmn- spines; sntnre nn the 

 ventral surfa.-e inrnniplete; tw.. small spines ,m either side nf 

 til'' Mlid.lle line nf the linily. Xinlh ter-ite prndneed .•auda.l as 

 twn str.m-. pai-allel. spinons prnjeethms. Ilypnpyni,,,,, iVuni 

 iK'neath. tlu' low<.r valve very hm- ainint eon.'ealini;- the dni'sal 

 valve, at its tip with fonr small spines diiv.'ted unlwar.l and 

 eaudad, tlie.se spines on the cando lateral an,-le of the s.-nient. 

 (Seo figure 1 of plate II ). 



Frnialr— Very similar to the male, the antennal sheaths 

 smaller and not so el,,sely approximat.'d hasallv; the lowr \alve 

 of the ninth s.-ment slender, ohtnse at apex, feebly notehed; 

 upper valves hroader. lon-er. with a deep median split, the lol.es 

 ionn<led. (See li-nres.'; an.l 4 of plate 11). 



Larva descrihed from one specimen taken in Cov (ilen Ithaca 

 .\. ^■.. May S. IDi:!. 



I'upa' .lescrihed fr<.m two f.'male.s; Cascadilla creek, Ithaca. 

 .v. ^■.. kill..! on May . -Id. IDi;;. (One taken as a fnllv -lown larva, 

 .May 7, 11M;1. hy Miss Kn.h,ra F. Tnltle; the otli.'r taken l.v t h.' 

 author as a larva on May II). 



Two pupa' from Oroiio. .Maine, killed on June 17. IDi;;. and a 



.\ r.na.loOHAI'HV OF TIIK l.M.MATrUK StacU-S OF TlIK (' VM X niioToM 1 .\ I 



General 

 Ostcii Sacken 1S!)7 



Remarks on tlic litcmturc of tlic earlier st.-ijics ef tjic Cvliii- 

 drotomini, a sccti.in (if tJK' Tipulidu'. 'frans ImH S.m' Leii.i'nn 

 362-366. 



