MAY FLIES AND MIDGES OF NEW YOnK 157 



1. Tanypus stellatus Coqiiillett 

 lOOli Tanypus Coq. Froe. U. S. Nat. Mns. 25:89 



Yellowisli ibrown, antennae except the basal joint pale yellow, 

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

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

 the joints, light yellow, halteres light }-ellow ; inesonotmn thinly 

 gre}' piniinose; Avings covered with brown hairs, whitish hyaline, 

 marked over nearly the entire surface Avith many brown spots, 

 several of which are confluent and enclose small whitish spots; 

 costal cell except at its apex brown ; Rj near its apex connected 

 with R. iby the oblique Ro, culbitus forks a short distance beyond 

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



iBome inale and female specimens captured in Ithaca, N. Y., I 

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

 the description 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 sjiots from the lateral lines, the anterior margin, and 

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

 two minute tubercles of the collar sometimes pale. Metanotum, 

 pleura and sternum, dark brown ; scutellum a little paler. Hairs 

 pale. Abdomen dull brown, the posterior margins of the segments 

 whitish. Claspers short, stout, 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 Ri, one on the 

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

 in cell Ri-f--, each divided longitudinally by a wing fold; two or 

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

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

 rowh"" whitish. Tibiae excepting the knees sometimes brown. 

 Length 2 mm. 



2. Tanypus posticalis Lundibeck 

 1898 T a n y p u s 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, 



