RICHARDIA.—PANERYMA. 387 
Front as broad as the eyes, rufous, with white lateral borders; face and cheeks pale yellow; occiput rufous. 
Antenne rufous; the third joint elliptical, on the fore side slightly infuscated; arista finely plumose. 
-Proboscis and palpi pale rufous. Thorax greyish-testaceous, with indistinct dorsal stripes; pleure, 
scutellum, and metanotum shining black; a greyish oblique band extends from the shoulders to the 
middle coxe, and there is a similarly coloured band above the hind cox. Abdomen subcylindrical (¢), 
or ovate and attenuated towards the tip ( @ ), clothed with brown hairs, which are numerous in the male; 
the first segment rufous (less distinctly so in the 9); the following segments bright steel-blue, with 
some violet reflections; the second segment with long lateral bristles; ovipositor of the female flattened, 
pointed, black, rufous towards the tip. Fore coxe pale yellow; middle and hind coxe shining black. 
Legs yellowish-rufous ; hind femora with the tip and a ring behind the middle brown; the base and tip 
of the tibiz also brown; tarsi infuscated towards the apex; the femora hairy beneath, the hind pair with 
short spines towards the tip; hind tibie curved. Halteres yellow. Wings greyish-hyaline; the brown 
median band rather narrow; the apical spot large, reaching from the end of the second vein to the end of 
the fourth vein. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
Several specimens of both sexes. 
4, Richardia concinna, sp.n., ¢ @. (Tab. X. fig. 18, wing.) 
Thorax testaceous; scutellum rufous; abdomen steel-blue; head, antenne, and legs yellowish-rufous ; hind 
femora with a brown ring; apical spot on the wings small, not extended to the second vein. 
Agreeing with the preceding (2. elegans) and of. equal size, but differing from it in the smaller apical spot on 
the wings and in the rufous (not black) scutellum and metanotum; the first abdominal segment is not 
rufous; the lower portion of the pleure and the middle and hind coxe are shining black; the band 
extending from the shoulders to the middle coxe is yellow; the second vein is not straight, but curved 
towards its termination. 
Hab. Mexico, Santiago Iscuintla (Schumann: 3 ), Acaguizotla in Guerrero 3500 feet 
(H. H. Smith: @ ). 
Two specimens. 
PANERYMA*, gen. nov. 
This genus is nearly allied to Richardia, but differs from it in some essential points. 
The abdomen is proportionately longer and more cylindrical, though somewhat 
attenuated at the base; the hind femora are not incrassated and are much longer than 
the others; the third and fourth veins are nearly parallel, and the cross-veins are less 
approximated. Paneryma thus forms a peculiar type amongst the group of genera 
allied to Richardia, equivalent to Celometopia of Macquart and Cyrtometopa, Steno- 
macra, Syntares, Euolena, Idiotypa, Steneretma, and Hemixantha of Low, which also 
have the hind femora not incrassated, as in Richardia, Rob.-Desv. 
The Mexican species referred to it cannot be included in any of the genera mentioned 
by Low (Monogr. Dipt. N. Amer. iii.). 
* rarépnpos, abandoned. 
