MAY FLIES AND MIDGES OF NEW YORK 111 



kind. It is said that the pupa has no respiratory appendages, 

 the only peculiarity which would distinguish it from other known 

 species belonging to this group. 



Genus Psychophaena Phillipi 

 Verb. z. b. Ges. Wien. 628. 1865 

 Proboscis equalling the head in length; palpi four-jointed, 

 third joint thickened, obconate, the fourth a little shorter, 

 slender and cylindrical; antennae pilose, 14-jointed (also of the 

 male?) the first joint thickened, the following seven subglobose 

 and (in the female at least) not petiolate, the rest elongate, the 

 apical one lanceolate; the posterior margin of the wing with 

 long cilia; legs pilose, not spurred, the metatarsus longer than 

 the following joints. The wing venation resembles fig.l4, pl.17, 

 but the media separates from E.1+5 a little distad of the forking 

 of the cubitus, this forking being almost as far distad as the 

 tip of the radial veins. The radial cells short. Type P. p i c t i- 

 p e n n i s Phillipi (Chile). This genus as defined does not differ 

 from C e r a t p o g o n or C u 1 i c i d e s . 



Genus Tetraphora Phillipi 

 Verb. z. b. Ges. Wien. 6.30. 1865. (P1.37, fig.18) 

 The antennae equal in length, the head and the thorax taken 

 together, about 12-14 joints, moniliform, verticillate with long 

 hairs, the basal joints subglobose, the intermediate ones nar- 

 rowed apically, bulbous. Wings hairy, venation as in fig.18. 

 Legs long, the first tarsal joint about as long as the four follow- 

 ing. Type T, fusca. Phil. (Chile). From the figure of the 

 wing it appears that this genus is probably a synonym of either 

 Ceratopogon or Gulicoides. 



Genus Didymorphleps Weyenbergh 

 Stettiner Ent. Zeit. 44:108. 1883. (P1.35, fig.2.5, after Weyenbergb) 

 The wing venation and other characters as figured and 

 described by Weyenbergh is essentially that of a Cerato- 

 pogon or Culicoides, but according to this author is said 

 to present some differentiating characters. The cilia of the an- 

 terior wing margin are coarse and bristle-like and of equal 

 length; those of the posterior margin are more delicate and of 



