Diptera of St. Vincent {West Indies). 379' 



2. Lonchsea hrevicornisy n. sp. 



$ . Front and face shining greenish-black ; front about twice 

 as long as wide. Antennae black, the third joint oval, not twice as 

 long as wide ; arista bare. Eyes bare. Thorax and abdomen deep 

 metallic-green ; ovipositor black. Legs brownish-black, the first 

 two joints of all the tarsi light-yellow. Wings greyish hyaline. 

 Length 4 mm. 



One specimen. St. Vincent. 



Physogenua. 



Macquart, Dipt. Exot. Suppl., iii., 60, 1851 ; Ewpte- 

 romyia, Bigot. Eev. et Mag. ZooL, 309, 1859. 



1. Physogenua nigra, n. sp. (PL XIII., fig. 133, head of $ .) 



^ , $ . Deep shining black throughout, the third joint of the 

 antennae and the four posterior tarsi reddish-yellow. Face large, 

 bare, smooth, evenly convex from side to side and from the 

 antennae to near the oral margin ; just above the oral margin a 

 narrow horizontal groove ; the narrow orbits silvery ; clypeus 

 slightly prominent ; the face on either side with three or four small 

 bristles. Palpi slender, black. Third joint of the antennse twice 

 as long as wide ; arista black, plumose. Scutellum convex, subtri- 

 auf^ular, with four bristles. Halteres white. Abdomen short-oval. 

 Wings tinged with brownish-yellow ; first posterior cell a little 

 narrowed at the extremity ; anterior cross-vein nearly opposite the 

 tip of the first vein. Length 4^ mm. 



Six specimens. St. Yincent. From the two described 

 species, P. vittata, Macq. {Lauxania variegata, Loew), and 

 P. ferriigineaj Sch., the present is easily distinguished by 

 its black colour. 



Sapromyza, 



Fallen, Dipt. Suec. Ortahd., 29, 1820. 



1. Arista plumose 2 



Arista pubescent or bare 7 



2. Mesonotum striped 3 



Mesonotum unicolorous ; wings without dark markings . 5 



3. Pleurae with stripes ; face with a small black spot in the 



middle below 4 



Pleurae unicolorous ^:)i<eZ/a, n. sp. 



