92 



having the eyes broader and inclined to be angular along the 

 lower orbit. Two of the males from Lafayette, Indiana, one 

 from Moscow, Idaho, in the U. S. National Museum, and one in 

 my collection from Moss Point, Mississippi, in which the genitalia 

 have been relaxed, have the pendant process of the penis extremely 

 long and slender. These variations have not been considered of 

 specific significance. 



Phrosinella fulvicornis Coquillett. 



Hilarella fulvicornis Coquillett, Journ. N. Y. Ent. Soc, vol. 3, p. 106, 1895. 

 Euhilarella fulvicornis Townsend, Proc. Biol. Soc. Washington, vol. 28, p. 22, 

 1915. 



The writer compared Coquillett's type with genotype speci- 

 mens of Hilarella hilarella Zetterstedt and Phrosinella nasuta 

 Meigen from Europe, determined by Professor Bezzi. The 

 latter species apparently has not been previously examined by 

 workers in this country. Coquillett's fulvicornis differs from 

 Hilarella in having the bucca and back of head about the oral 

 cavity with sparse, pale hairs, the apical cell open, the inner 

 eye-orbits sinuous and the parafacials distinctly pinched in at the 

 lower corners of the eyes. It agrees with Phrosinella in all these 

 characters, and others of generic significance with the possible 

 exception of the sexual dimorphism in the specialization of the 

 fore tarsus not occuring in nasuta. A careful study of the 

 Miltogramminae of North America reveals several instances of 

 striking specialization of the fore tarsus occuring in species closely 

 related to others without such specialization, and placed by com- 

 mon consent in the same genus with them. Hence, I recognize 

 fulvicornis as of a genus distinct from Hilarella but congeneric 

 with Phrosinella nasuta. 



