MAY FLIES AND MIDGES OF NEW YOEK 279 



the femora soni.nvl.at .InrkcT; IIr. fo.e tavsi of the male bare or 



aily so, fore u.etatarsus scunewha, short..- than the t.b.a the, 



nl tibiae and tarsi thickly haired; ^vi„gs wh.t.sh spotless. 



aU,.res white. The fenmle has a light s,,ot on each hume™, 



and the l.ostevh.r legs have fewer hairs. Lengtli 1 to 1.5 ram. 



Greenland. Lnudbeck. 



15, Orthocladius fugax n. sp. 

 larva In liKle rolls or tnbes of debris upon the Hat roek 

 boUom of Caseadilla creek (Ithaca K. Y.) little Wmsh green 

 larvae with dark brown heads were fonnd. These larvae a e 

 •ather n.ore robust than those of many CU . r o n onv. d s , t e 

 H.iddle body segn.ents being fully as wide as they are tong To 

 total length of a full-grown larva is from 3 to 4 >"» ■ Hf",'^/'; ,^^ 

 brown short, with the suture separating the dorsal fiom the 

 1, e al' sc lerites quite distinct, the dorsal sclerite bemg eloogate- 

 ova acate-anglecl at its caudal n.argin, with three setae upon 

 Zt literal n^rgin, the most posterior of these bemg cepha ad 

 of the middle transverse line; opposite this last ^<^t^, »*;"'''" 

 suture but upon the lateral .sclerite is another se a a l.ttle caudad 

 ol^ 1 is a so near the sutnre there is still another, and on each 

 d near the ventral surface, directlv veutrad of the p^red ey. 

 spot, there is a pair. The pale brown .antennae pl.2., fl^3a) are 

 short only about one half as long as the mandible. The lattei 

 Is stout i^s apical half blackened, and with a stout seta on its 

 de The lalrnra .fig.3. bas a somewhat blunt aPf- -* a 

 few small setae; the epipharynx has the usual I-'' »' » "^ ^l^^ 

 ends of which are not conspicuously darkened. The maxilla 

 U" 2 ni^ has a short palpus and a few papillae and a group o 

 me^Td n-ljectiug tllaments. The labium is J--;;-;^^^-^ 

 ni-ivcin of black, the middle tooth is rounded, the hist lateiai n..s 

 "lore or less distinct notch on its lateral edge, the remaining 

 la rals h-ive rounded fips (Bg.'i 1). Each anterior P™l^g - P™^ 

 ided with perhaps about 5(1 long and rather coarse pectinate 

 srtae (fl.5) and inanv shorter ones. The ,,osterior legs are each 

 n H^dcd with a number of claws, those- on the periphery as 

 1, V 1 11 pl 25 flg.n. those in the middle of .the foot as shown in 

 fi X T le pap llae upon whi.h the caudal setae are placed are 

 short an pale in color. The anal blood gills are rather long and 

 irent\pl.25, flg.fi). The diameter of the -.terior a .doininal 

 L,meiils is .-onsiderably greater than tlmo.he^^^^^ 



Pnna Dark tiTscons sreeii. l.enp,tli —J lo .3 mui. ^ 1 . 



or^an slender broadened! toward the apex, its surface ronghened 

 Tpl 25, fig.4) ■ it« length a little greater than the setae at the 



