418 NEW YORK STATE MUSEUM 



abdominal segment with 80 to 32 teeth arranged in about three 

 irregular rows. Caudad of this comb is a tuft of nine feathered 

 hairs, and dorsad and ventrad of it are several small bristles. 

 On the dorsal margin of the ninth segment are three or four 

 long bristles, and on the apical third of the ventral surface is a 

 brush of long hairs consisting of from nine to 12 tufts. In most 

 specimens the blood or tracheal gills are long, extending beyond 

 the tip of the breathing tube. 



Pupa. The breathing trumpet [fig.ll] is somewhat widened 

 at the top, about five times as long as wide, its apical margin 

 oblique. On the most posterior of the thoracic sclerites are 

 three pairs of short, stout, branched hairs; on the dorsal surface 

 ■of the firsit abdominal segment, are the usual pair of stellate 

 hairs; the remaining segments each have about three pairs of 

 lateral discal hairs and two pairs of small branched marginal 

 ones, one of the marginal pairs on the eighth segment being 

 many branched. 



Ciilex pipiens Linnaeus 

 Plate 43 



Male. Length 1mm. Antennal joints grayish white, the tips 

 black, the long hairs brown; proboscis and palpi pale fuscous, 

 the latter darker at the tip with long, dark brown hairs; occiput 

 with yellowish hairs; dorsum of thorax yellowish brown, with 

 five indistinct, darker brown stripes, on each of which is a row 

 of a few black or brown bristles, elsewhere covered with yellow 

 scales; ])leura metanotum and scutellum yellowish brown, the 

 last slightly darker, with a few long brownish hairs; abdomen 

 long haired, segments fuscous, at the base rather widely fas- 

 ciated with yellow scales: ventral surface paler fus^-ous; 

 genitalia yellowish, not very ])roniinent [fig.ll]; legs fuscous, 

 quite pale on the coxae and base of femora, gradually bcMMMiiiug 

 darker distally, the tarsi being quite dark; the knees and ex- 

 treme tip of tibiae, yellowish. The fore and middle pairs of 

 claws unequal, the longer one inside, each claw with a distinct 

 tooth [fig.8]. The hind claws simple. Wings hyaline, scales 

 fuscous [fig.lO]. Halteres jtale. 



Female. Length 1mm. Antennae, proboscis and paljti uni- 

 formly fuscous; abdomen fuscous, with a very narrow basal 

 fascia of yellow scales on each segment; ventral surface paler; 

 femora with basal half and flexor surface yellow, gradually 

 becoming darker distally, tibiae and tarsi as with tln^ male. All 

 tarsal claws simple [fig.!)]. Wings with fuscous scales, ^'ena- 

 tion as in figure 12. All else as with the male. IJred specimens. 

 July 18, Aug. 81, and Sej». 7, 1!»()1. Ithaca X. Y. 



Larva. Length 7 to 8 mm. The head is nearly circular in out- 

 line, color pale fuscous, with six moderately long tufts of hair on 



