MAY FLIES AND MIDGES OP NEW YORK 157 



1. Tanypus stellatus Coquillett 

 1902 Tanypus Coq. Proc. U. S. Nat. Mus. 25 : 89 



Yellowish ibrown, antennae except the basal joint pale yellow, 

 abdomen blackish, a whitish ring at three fourths the length of 

 each femur, tibiae except each end, and tarsi except apices of 

 the joints, light vellow, halteres light yellow ; mesonotum thinly 

 grey pruinose; wings covered with brown hairs, whitish hyaline, 

 marked over nearly the entire surface with many brown spots, 

 several of w^iich are confluent and enclose small whitish spots; 

 costal cell except at its apex brow^n; R^ near its apex connected 

 with R3 (by the oblique Ro, culbitus forks a short distance beyond 

 the crossvein ; length 2 mm. Female. Texas, Kansas, New York. 



(Some imale and female specimens captured in Ithaca, N. Y., I 

 have identified as this species. The females agree very well with 

 the descripition given by Mr Coquillett; the descriptions of the 

 specimens are as follows : 



Male. Head, palpi and basal joint of antenna fuscous, the 

 antenna and its hairs a trifle paler. Dorsum of thorax with three 

 dull dark^brown stripes, the middle one divided; the fine lines 

 separating the dark dorsal lines, the lines separating the dark 

 humeral spots from the lateral lines, the anterior margin, and 

 the posterior margin of the middle line, cinereous white. The 

 tvv^o minute tubercles of the collar sometimes pale. Metanotum, 

 pleura and sternum, dark brow^n ; scutellum a little paler. Hairs 

 pale. A'bdomen dull brown, the posterior margins of the segments 

 whitish. Claspers short, stouit, and dark brown. Coxae brown, 

 each femur brown,, with a white ring not far from the apex, each 

 tibia yellow with brown base and tip^ tarsi yellow, joints black at 

 tip, last joint darker; fourth tarsal joint slender, and longer 

 than the fifth. Wings with many brown spots, that upon the 

 crossveins most conspicuous. Two near the tip of R^, one on the 

 humeral crossvein, one dark one on the median crossveins, four 

 in cell R4-f5, each divided longitudinally by a wing fold; two o^r 

 three in the cell M; one or two between branches of the cubitus; 

 and several in the anal cell. Venation as shown. Halteres 

 sordidly yellow, the knobs somewhat infuscated, their tips paler. 

 Length 3 mm. 



Female. (P1.27, fig.7.) Like the male, but the abdomen is usually 

 wholly brown, occasionally the margins of the segiments very nar- 

 rowly whitish. Tibiae excepting the knees sometimes brown. 

 Length 2 mm. 



2. Tanypus posticalis Lundibeck 

 1898 Tanypus Lund. Vidensk. Meddel. p.295 



Thorax black, shining, with two longitudinal cinereous stripes ; 

 or it may be described as having three wide black stripes, shining, 



