hh. Upper corner of the eye in the female not so terminating; wings nearly uniform in color, or hyaline. i. Proboscis scarcely extending beyond the palpi; front of the female wide; much wider below than above. S. W. States. _Apatolestes_ Will. ii. Proboscis extending beyond the palpi. j. Wing with cell M_3 closed. Tropic America. (= _Diclisa_) _Scione_ Wlk. jj. Cell M_3 open; ocelli present or absent. Two or three eastern species; many south and west PANGONIA Rdi. ff. Third segment of the antenna with five divisions; ocelli present. g. First and second segments of the antenna short, the second only half as long as the first, three western species. SILVIUS Rdi. gg. First and second segments of the antenna long, the second distinctly over half as long as the first. Deer flies. Many species, widely distributed. CHRYSOPS Meig. ee. Hind tibia without spurs; ocelli absent. f. Third segment of antenna with four divisions, no tooth or angulation; wings marked with rings and circles of darker coloring; front of the female very wide. Widely distributed. _H. americana_, _H. punctulata_. HÆMATOPOTA Meig. ff. Third segment of the antenna with five divisions (fig. 161b). g. Third segment of the antenna not furnished with a tooth or distinct angular projection. h. Body covered with metallic scales; front of female of normal width; front and middle tibiæ greatly dilated. _L. lepidota_. _Lepidoselaga_ Macq. hh. Body without metallic scales; antennæ not very long, the third segment not cylindrical, not situated on a projecting tubercle; front of the female narrow. South. _D. ferrugatus._ (= _Diabasis_) _Diachlorus_ O. S. gg. Third segment of the antenna furnished with a tooth or a distinct angular projection. h. Hind tibiæ ciliate with long hairs. S. W. and tropics. _Snowiella_ and _Stibasoma_. hh. Hind tibiæ not ciliate. i. Species of slender build, usually with a banded thorax and abdomen; third segment of the antenna slender, the basal prominence long; wings mostly with brownish markings. Tropic America. _Dichelacera_ Macq.