J. R. MALLOCH 277 



height of cheek, the latter with a broad, anteriorly rounded area 

 which is covered with closely placed upwardly directed bristly 

 hairs. Prealar bristle strong; lower calypter not twice as large as 

 upper. Abdomen subcylindrical; fifth sternite almost transverse 

 at apex; in female the abdomen is pointed at apex and the last 

 segment has two moderately long, apically rounded processes 

 which are armed with weak hairs. Fore tarsi in both sexes ivitfwut 

 long, fine, isolated sensory hairs, in female with very noticeable, erect, 

 stiff hairs vertrally, those at apices of joints longer than the others; 

 hind tibia with several long strong bristles on postero-dorsal sur- 

 face; hind coxae bare at apex above. 



The subgenus Pogonomyia Pokorny is separable from Neopo- 

 gonomyia S. and D., as shown in the key to the males presented 

 herewith. 



The most closely allied genus is Drymeia R,-D., which has the 

 apical labellae of the proboscis elongated, sharp at apex, and re- 

 curved. This genus has been reported from North America ])ut 

 I have seen only European specimens. 



Key to Species 

 Males 



1. Mid tibia with one or more bristles on antero-ventral and always several 



on the anterior surface; basal joint of hind tarsi with an outstanding 

 ventral bristle near base; arista with very shoit i ubescence (Pogonoinijia 



sens, .str.) 3 



Mid tibia witliout liri^tles on antero-ventral surface, rarely with l)ristles 

 on anterior or antero-dorsal surface only; basal joint of hind tarsi 

 without an outstanding ventral bristle near base; arista with the 

 })ubescence usually as long as basal (liain(>ter of arista {Ntopogononiyia 

 S. and D.) 4 



2. Thorax with four pairs of postsutural dorso-central l)ristl('s. 



alpicola Kondani 

 Thorax with three pairs of postsutural donso-central i)ristles 2 



3. Eyes separated by a distance greater than width across posterior ocelli; 



spines on ventral surface of mid metatarsus longer than diameter 

 of metatarsus, metatarsus thickened; antoro- and postero-\-entraI 

 surfaces of mid tibia each with seven to ten bristles. 



spinitarsus Aldrich 

 Eyes separated i)y a distance distinctly less than width across posterior 

 ocelli; spines on ventral surface of mid metatarsus not as long as diam- 

 eter of metatarsus, metatarsus slender; antero-ventral surface of mid 

 til)ia with one to two bristles, postc^ro-ventral surface with four to five. 



alpicola Hondani 



TRANS. AM. ENT. SOC, XLIV. 



