368 SUPPLEMENT. 



5. Empis chichimeca, sp. n. 



<$ . Shining metallic green. Face and occiput black, dusted with white. Eyes contiguous on the front. 

 Proboscis nearly as long as the head. Antennae black ; third joint shorter than the first and second 

 joints taken together, very nearly of the length of the first joint ; style very short. Mesonotum shining 

 metallic blue-green, with three deep blue stripes anteriorly, and beset with erect and rather dense 

 brownish-black hairs. Abdomen metallic green, with black hair. Hypopygium small, black, with only 

 the base of the filament exposed. Pleurae shining black, metallic blue-green anteriorly, dusted with white 

 posteriorly. Legs black, covered with black hairs ; knees, fore and middle tibiae, and all the tarsi yellow. 

 Fore metatarsi thickened, nearly as long as remaining tarsal joints taken together. Middle legs plain. 

 Hind femora on the inner inferior side with two slender finger-like processes, with an emargination 

 between them ; hind tibiae on the inner side with a stout scoop-shaped process, truncated and flattened at 

 the extremity ; hind metatarsi incrassate, somewhat concave on the plantar surface, and bearing on the 

 outer side a prominent pointed projection tipped with two small black spines. Wings tinged with brown, 

 yellowish anteriorly ; veins yellow ; stigma fuscous, slender and inconspicuous ; anterior branch of third 

 vein short, rectangular. 



2 . Colour, especially of the abdomen, more metallic blue. Face shining metallic blue. Middle femora 

 below, hind femora above and below, and the four posterior tibiae on their inner and outer sides with 

 thick-set rows of black scale-like hairs. Middle and hind tibiae grooved on the outer side. Fore meta- 

 tarsi incrassate, as in the male ; hind metatarsi less thickened, and the legs wholly without the peculiar 

 processes of the male. Stigma of the wings obsolete. 



Length 4-5 millim. 



Hab. Mexico, Amula in Guerrero 6000 feet (E. H. Smith). 



Two males and seven females. This species may be distinguished from E. benigna, 

 (X S., by the processes of the hind legs of the male ; and from E. cyanea, Bell., by the 

 colour of the front legs, the structure of the fringes, and the smaller or obsolete stigma. 



6. Empis suavis. 



Empis suavis, Loew, Cent. viii. no. 56 \ 



Bab. Mexico, Chilpancingo in Guerrero (II. H. Smith). 



A single female specimen, easily referable to this species, save for the fact that the 

 first section of the fourth vein is in no sense obsolete ; the mesonotum is chalybeous 

 throughout in certain lights, metallic green in others ; the front metatarsi are but 

 slightly incrassate. E. suavis was not identified by O. Sacken (antea, p. 216). 



7. Empis rubida, sp. n. 



5 . Front and face shining black. Antennae reddish-yellow ; third joint slender on the distal part, the style 

 slender, aristiform. Proboscis yellow, not longer than the vertical diameter of the head. Mesonotum 

 shining yellowish-red, strongly convex, bare ; pleurae yellower. Abdomen brownish-yellow. Legs light 

 yellow, not dilated or ciliated ; tip of all the metatarsi and of the remaining tarsal joints, and the tip of 

 the hind femora and tibiae, blackish. Wings cinereous-hyaline, with yellowish veins ; stigma elongate, 

 brown ; anterior branch of the third vein nearly rectangular and gently arcuated. Halteres yellow. 



Length 4 millim. 



Hob. Mexico, Chilpancingo in Guerrero (H. H. Smith). 

 One specimen. 



