174 NEW YORK STATE MUSEUM 



c Langth 1.5 mm; abdomen dark brown; subcosta uniting with costa 

 at the distal third; fourth palpal segment one-quarter longer than 



the third graminea Felt, C. 5 



cc Length .75 mm ; abdomen dark brown ; subcosta uniting with costa 

 at the basal third; fourth palpal segment with a length twice the 



third leguminicola Felt, C. 121 



bb Fifth antennal segment with a stem three-quarters the length of the 

 basal enlargement 

 c Length .75 mm ; abdomen dark brown ; wings narrow, the fourth 



palpal segment with a length twice the third 



h e s p e r i a Felt, C. 714 

 cc Length 1 mm ; abdomen black ; wings broad ; fourth palpal seg- 

 ment with a length twice that of the third 



latipennis Felt, C. ai457 

 bbb Fifth antennal segment with a stem as long as the basal enlargement 

 c Length 1.5 mm ; abdomen fuscous yellowish ; fourth palpal segment 

 with a length one-half greater than the third ; basal clasp seg- 

 ment with an internal lobe dilatata Felt, C. 1109 



cc Length 1.25 mm ; abdomen fuscous ; fourth palpal segment with a 

 length one-half greater than the third; basal clasp segment with- 

 out a lobe montana n. sp., C. ai95i 



Prionellus defectiva Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 314 (Campylomyza) 



This species was taken on hemlock, Tsuga canadensis, 

 at Newport, N. Y., July 27, 1906. 



Female. Length 1 mm. Antennae extending to the fourth ab- 

 dominal segment, thickly haired, dark brown, 12 segments; fifth 

 subglobose, terminal segment slightly prolonged, narrowly rounded 

 distally. Palpi; the first segment somewhat enlarged, subglobose, 

 the second short, stout, subquadrate, the third a little longer, the 

 fourth one-half longer than the third. Mesonotum dark brown, 

 submedian lines sparsely haired, indistinct. Scutellum dark brown, 

 postscutellum and abdomen dark fuscous yellowish, distal segments 

 dark brown. Wings hyaline, costa dark brown, subcosta uniting 

 with the margin near the middle. Halteres yellowish transparent; 

 legs mostly fuscous yellowish, the tarsal articulations variably 

 tinged with deep carmine ; distal tarsal segments brown ; metatarsus 

 more than twice the length of the following segment; claws stout, 

 strongly curved, denticulate ; pulvilli as long as the claws. Ovi- 

 positor short, the terminal lobes triarticulate, the distal segment 

 broadly oval. Type Cecid. 715. 



Prionellus silvana Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 314 (Campylomyza) 



This species was taken August 11, 1903 by Mr R. P. Currie at 

 an altitude of 8000 feet on the Kokanee mountain, B. C. 



