402 Professor Williston on the 



Wings smoky hyaline, distinctly clouded at the tip. Legs black ; 

 the first two joints of the front tarsi and the four posterior tibiae 

 and tarsi, except the terminal joints of the latter, light-yellow. 

 Length 3 mm. 



Twelve specimens. St. Vincent. 



OCHTHEEA. 



Latreille, Hist. Nat. Crust, et Ins. xiv., 1 804. 

 1. Ochthera cuprilineata, n. sp. (PI. XIII., fig, 148, wing.) 



. ^, ?. Front with a large shining black spot, leaving the 

 lateral and front margins opaque brown. Antennae black. Face 

 opaque, light-yellow, with a median, shining black spot. Palpi 

 light yellow. Cheeks and posterior orbits opaque light-yellow. 

 Mesonotum and scutellum sub-shining, lightly bronze or brassy, 

 the former with three dark purple and coppery stripes. Pleurae 

 lighter, on the lower part shining black. Abdomen metallic-bronze 

 colour ; in some specimens the second and third segments with a 

 narrow shining black posterior band, apparently due to the detri- 

 tion of the metallic covering. Legs black ; the femora with more 

 or less of the metallic covering, like that of the mesonotum. 

 Front coxa3 white dusted, with a shining black spot on the outer 

 side ; front tibiae in part, and all the tarsi, save the distal joints 

 and the swollen hind metataisi, red. Wings lightly clouded ; 

 somewhat yellowish on the costa in front. Length 5 mm. 

 Eight specimens. St. Vincent. 



Ephydra. 



Fallen, Hydromyzidse, 1820. 



1. Ephydra 'pygm^.a, n. sp. (PI. XIII., figs. 147, wing; 



147a, head.) 



(^ , 5 • Front opaque velvety black, the large ocellar triangle 

 shining. Antenuse black, the third joint rounded ; arista bare or 

 very short pubescent. The vaulted portion of the face shining 

 metallic-green, very lightly yellowish dusted ; border of the mouth 

 ■with a number of hairs on each side; otherwise the face is bare, 

 except some weak bristles on the sides inferiorly. Wings clouded 

 with blackish grey. Legs black, not at all shining, the tarsi and 

 portions of the tibia3 more brownish. Halteres yellow. Hypopy- 

 gium very small ; fifth segment longer than the fourth. Length 

 2imm. 



Fifteen specimens. Perseverance Viilley, St. Vincent. 



