420 Professor Willis ton on the 



brown, moderately shining and with feebly marked linear stripes. 

 Scutellum reddish-yellowish ; oval, convex, and with approximated 

 apical bristles. Abdomen reddish or yellowish at the base^ 

 becoming brownish distally. Legs reddish or lutescent yellow, the 

 tarsi brownish distally. Wings nearly hyaline; third section of 

 the costa but little more than half the length of the second 

 section. Length 2 mm. 



Four specimens. St. Vincent. 



5. Hippelates Havipes. 



Hijopelates JlavipeSf Loew, Centur., vi., 95. — Cuba. 



A large series of specimens from St. Yincent agree 

 with, the description of this species so closely that there- 

 can be no question of their identity. With them, how- 

 ever, there is yet a larger number which show such 

 discrepancies that their specific identity is somewhat 

 doubtful. I give herewith a description of the variety 

 or species, whichever it may be. 



(^ , $ . Front opaque black or dark brown on the sides ; on the 

 lower third, from the tip of the very large shining black triangle,, 

 opaque yellow. Antennae yellow, the upper part of the third joint 

 blackish ; arista black, bare. Face and cheeks yellow, the former 

 with a large notch in front, which is margined with brown. Meso- 

 notum shining black, with black pubescence ; scutellum opaque^ 

 convex, and with a pair of approximated bristles at the apex.. 

 Pleurae shining black. Abdomen black ; the base, the venter, and 

 the ovipositor yellow or yellowish. Halteres light-yellow. Legs, 

 including the front coxae, light-yellow; hind femora for the greater 

 part black, the middle femora and hind tibiae sometimes blackish 

 in the middle. Length lf-2 mm. 



In yet another large series the legs are almost wholly 

 black, save the tarsi, and the antennaa are wholly black. 



6. Hippelates scutellarisy n. sp. 

 $. Front yellow, including the lower part of the very large, 

 shining black triangle, which reaches very nearly to the base of the 

 antennae. Antennae reddish-yellow ; the arista black and very 

 finely pubescent. Eyes sparsely, but distinctly, pubescent. Face 

 yellow, somewhat blackish in the middle. Cheeks very narrow. 

 Palpi yellow. Mesonotum wholly shining black, not pollinose. 



