160 NEW YORK STATE MUSEUM 



one fourth shorter than the tibir., fore tarsi of the male bearded. 

 Halteres whitish. 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, flg.24). 



The female is usually son:c\vhat lighter colored. Length 3.5 to 

 4.5 mm. Translation from V.d. Wulp il87T|. " (,'oloring some- 

 what variable." Schiner (1864). North America (Osten Sacken, 

 1878). 



6. Tanypus tibialis Say. 



1823 Tanypus Say. Journ. Ac. Nat. Sc. 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 Avhite at base; abdomen white, a 

 double band on the middle and tip black. Habitat: Pennsylvania. 



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

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

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

 much broader, and terminal segments deep fuscous, pleura yellow- 

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



7. Tanypus baltimoreus Macquart 

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

 1878 Tanypus Ost. Sack. Catl. Dipt. N. A. p.21 



Female. Palpi tawny, shining cinereous. Antennae wanting. 

 Thorax with wide black bands; abdomen t)lack, posterior margins 

 of the segments white. I^egs tawny ; tarsi dusky. Halteres brown. 

 '^A'ings greyish, with an oblique black line; veins noi-mal. Length 

 3.5 mm. From Baltimore. Translation. 



Judging from the description this species 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 about the wing venation with respect to fork of the 

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

 or bare; it is therefore imjiossil^le 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, verticillate with long hairs, 



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



elongate, equaling the antennae, joints su/bcylindrical. Wings 



