MAY FLIES AXU MIDGES OP NEW YORK 253 



lum and tlie metanotum sliining black. The abdomen dull black, 

 basally and at the incisures whitish; anal segment thicker than 

 the preceding one; the forceps white. Head black, the antennae 

 brown, its hairs lighter at the tip. Legs black or brown, ante- 

 rior coxae, with all the femora at their bases and wide bands on 

 the middle of all the tibiae white; the second and third joints of 

 all the tarsi also white; the fore metatarsus markedly shorter 

 than the tibia. Wings grayish, in certain lights whitish. 



Halteres white. . • ^i 



Female. Differs from the male in having darker veins in the 



wings. Length 2 to 3 mm. New Jersey (Johnson). 

 Translation from Schiner, loc. cit. 



2. Cricotopus geminatus Say. 



1823 C h i r o n 111 u s Say. Journ. Acad. Nat. Sc. Phil. 3 : 14, 4 



1859 Ohironomus Say. Compl. Wr. 2 : 42, 4 



1878 Ohironomus Ost. Sack. Cat'l. Dipt. N. A. p.20 



1899 Gricotopvis Johnson, in Smith's Cat'l. Ins. N. J. p.627 



Thorax fuscous; pleura gray; abdomen white, annulate with 

 black. Humerus gray, the color being a continuation of that of 

 the pleura; pectus livid; feet white; thighs blackish, pale at the 

 base ; tibia at base and tip, and tarsi at tip fuscous ; abdomen with 

 three broad double bands, formed thus : second segment fuscous 

 with the exception of the posterior margin, third segment fus- 

 cous on the basal margin, fourth segment fuscous excepting the 

 posterior edge, fifth segment fuscous on the basal half, sixth and 

 seventh segments entirely fuscous. Length 3-20 of an inch 

 (3.75 mm.). Pennsylvania. Say, loc. cit. New Jersey (John- 

 son). 



3. Cricotopus trifasciatus Panzer 



1813 Ohironomus Panz. Faun. Germ. p.l09, 18 



1818 Ohironomus Meigen. Syst. Beschr. 1 : 42, 50 



1850 Ohironomus Zett. Dipt. Scand. 9 : 8556, 83 



1864 Ohironomus Schiner. Fauna Austr. 2:610 



1818 Ohironomus t r i c x n c t u s INIeigen. Syst. Beschr. 1 : 41, 49 



1850 Ohironomus Zett. Dipt. Scand. 9 : 3555, 82 



1864 Ohironomus Schiner. Fauna Austr. 2:610 



1874 r i c o t o p u s V. d. Wulp. Tijds. v. Ent. 17 : 132 



1877 O r i c o t p u s Y. d. Wulp. Dipt. Neerl. p.272. 3 



1878 Ohironomus Ost. Sack. Cafl. Dipt. N. A. p.21 



(P1.24, figs. 5 to 10; pl.29, fig.l5) 

 . Larva. The larva is yellowish with a brownish or reddish 

 tinge. Some are wholly yellow. length 4 to 5 mm. This larva 

 differs from all others thus far examined in having a bunch of 

 long, fine, pale yellow hairs (pl.24, fig.O) near each lateral margin 



