TACHINID.E. 



377 



With more than one cliscal and marginal pairs of macrochsetse on 

 second abdominal segment. .... Bpalpus. 



172. Sides of face with one macrochaetae; slender (39, 61). 



Tricophora. 

 Sides of face with two or three macrochaet?e. Cuphocera. 



173. Face on lower half of its sides bare (113). Bombyliomyia. 

 At least a portion of sides of face with hairs or macrochaetae. 174 



174. Eyes distinctly hairy. . . . . . . . 175 



Eyes bare or with very short hairs. ..... 176 



175. Third antennal joint almost straight on front edge, the tip sub- 



truncate (113) Bombyliomyia. 



Third antennal joint strongly convex on front edge, the tip 

 rounded (10O) ....... Jurinella. 



176. Ocellar bristles absent. . . . . . . . 171 



Ocellar bristles present. ....... 181 



177. Sides of face without macrochaetae. . . . . . 178 



Sides of face with two or three macrochaetae (7) . Pelateria. 



178. Second segment of abdomen never with more than eight mar- 



ginal macrochaetse (11, 1O2) . . . . Archytas. 



Second segment with at least twelve marginals. . . 179 



179. Palpi gradually thickened from base; proboscis shorter than 



height of head. . . . . . . . . 180 



Palpi thickened on distal three-fourth; proboscis at least one and 

 one-third times the height of head (17). . . Dejeania. 



180. Abdomen subquadrate, the tip deeply emarginate (fig. 21, p. 44). 



Paradejeania. 

 Abdomen conical, the tip not emarginate ^95). . Jurinia. 



181. Vibrissje at least the length of the second antennal joint above 



oral margin (46 1. . . . Eucnephalia, Amobia. 



Vibrissae at most only half the length of the second antennal 



joint above the oral margin. ..... 182 



182. First posterior cell closed. .... Trochilodes. 

 First posterior cell open Echinomyia. 



Owing to doubt of their true position, the following genera have not 

 been included in the above table. The references to them will be 

 found in Aldrich's catalogue: 



Eliozeta, Hiniantostonia, Hemithyi.vion, Meriana, Parahypochccta, 

 iMetadoria, Evibrissa, Besseria, Peteina, Masistylum, Stevenia, Mys- 

 tacella, L'hcctogena, Hypertrophocera, Tricolyga, Tetragrapha, D<zc- 

 cha-ta, Neotractocera (1O7), Paraga'dia, Cestoma, Gccdiophana, 

 Crvptopalpits* Hystricia. Microchira, Ttopuiopsis. 



