160 NEW YORK STATE MUSEUM 



one fourth shorter thau the tibia; fore tarai of the male bearded. 

 Halteres whitisli. Wings slightly hairy, hyaline, slightly smoky 

 near the tip; the crossvein brown clouded; the cubitus forking 

 distad of the crossvein ; venation resembling that of P. n e r v o - 

 s u s (pl.37, fig.l*4). 



The female is usually souunvhat lighter colored. Length 3.5 to 

 4.5mm. Translation from V.d. Wul]> (ISTTj. "Coloring some- 

 what variable." Schiner (18G4). North America (Osten Sacken, 

 1878). 



6. Tanypus tibialis Say. 



1823 T a u y p u s Say. Journ. Ac. Nat. Se. Philad. 3 : 15, 2 

 1828 Tanypus Wied. Ausser. Europ. Zw. Ins. 1 :20, 4 

 1878 Tanypus Ost. Sack. Catl. Dipt. N. A. p.22 



Thorax reddish brown; tibia white at base; abdomen white, a 

 double band on the middle and i\]> black. Habitat : Pennsylvania. 



Wings imimaculate; poisers white; feet fuscous, basal half of 

 the tibia white; tergum, second joint witli a spot each side, two 

 middle segments with each a hand, of which the anterior one is 

 much broader, and terminal segments deej) fuscous, pleura yellow- 

 ish. Length of male more than 1/20 in. 



7. Tanypus baltimoreus ^Macquart 



1855 T e 1- n i p u s Macq. Dipt. Exot. Suppl. V. 15, 1 

 1878 T a n y p u s Ost. Sack. Catl. Dipt. N. A. p.21 



Female. Palj)i tawny, shining cinereous. Antennae wanting. 

 Thorax with wide black bands; abdomen black, posterior margins 

 of the segments Avliite. I^gs tawny ; tarsi dusky. Halteres brown. 

 Wings greyish, with an oblique black line; veins normal. Length 

 3.5 mm. From Baltimore. Translation. 



Judging from the description this S})ecies seems to resemble 

 T. c u 1 i c i f o r m i s , but it has brown halteres. Nothing is 

 said either ahout the wing venation with respect to fork of the 

 cubitus, whether sessile or petiolate; or whether the wing is hairy 

 or bare; it is therefore impossible to say to which one of the 

 four genera of the group Tanypus it belongs. 



Genus 20. Pentaneura Philippi 



Verb. z. b. Ges. 35. 629. 1865 



The antennae equal in length to the head and thorax taken 



together, moniliform, 12-14 jointed, verticilhite with long hairs. 



the joints subglolnise, not petiolate, the last joint elongate. Palpi 



elongate, equaling the aptennae, joints suibcylindrical. Wings 



