154 NORTH AMERICAN DIPTERA. 



DASYPOGONINVE, p. 54. 

 2. Pulvilli rudimentary or wanting ........ 2a 



Pulvilli normal. . . . . . . . . . . 2b 



2a. Claws very long, with an elongated tooth at the base of each ; large 



species (Central and South America). . . DICRANUS Loew. 



Claws normal. . . <_ . . . ABLACTUS Loew. 



2b. Antennae with a long, terminal arista (Cen. America and East Indies). 



DAMALIS Wiedemann. 

 Antennas not with a terminal arista ....... 2c 



2c. Only four posterior cells present; front very broad above; very small 

 species (Mexico) ...... TOWNSENDFA Williston. 



Five posterior cells present as usual ....... 3 



S, p. 59. 



4. Oviduct cylindrical, with a terminal circlet of spines. . . . 4a 

 Oviduct laterally flattened, etc. .... ERAX Macquart. 



4a. Abdomen shorter than the wings. . . . ECCRITOSIA Schiner. 

 Abdomen longer than the wings. . . PROCTACANTHUS Macquart. 



7. Oviduct laterally compressed. . . .. ..... 7a 



Oviduct conical. .......... 14 



7a. Third antennal joint unusually hairy. . . ANARMOSTUS Loew. 

 Third antennal joint not unusually hairy. ..... 8 



NEOPLASTA Coquillett, Proc. Nat. Mus. 1895, 393 (June, 1896. Same as 



Hemerodromia, but the discal and second basal cells united and the 



second posterior cell sessile. 

 EMPIMORPHA Coquillett, 1. c. 398. " Same as Empis, except that the face 



is covered with long bristly hairs." 

 NEOCOTA Coquillett, 1. c. 434. " Same as Rhamphomyia, except that the 



face is thickly covered with long pile." 

 MICROPHORDS Macquart, Dipt, du Nord, etc. 1827. Separated from Lepto- 



peza and Ocydromia of the table by the third antennal joint being 



elongate, with a terminal style. 

 MEGHYPERUS Loew, Stett. Ent. Zeit. 1850, 303. Separated from Hybos 



and Syndyas of the table by the fourth longitudinal vein being 



furcate. 

 PARAHYDROPHORUS Wheeler, Entom. News, 1896, 185. "Closely allied to 



Scellus and Hydrophorus, the $ distinguishable from the $ Hydro- 



phorus by the deep notch in the fore femora, the prominent spur on 



the hind trochanter, and the structure of the hypopygium.' 



