g6 ENTOMOLOGICAL NEWS. [March, '08 



cent. Face concaved ; fovese and carina indistinct. Proboscis 

 short, thick. 



Thorax with the following bristles : 2 pairs post-dorso-cen- 

 trals, two post-alar, one supra-alar, two noto-pleurals, one hum- 

 eral, no sternopleural, a fine hair in place of the propleural. 

 Mesonotum flattened posteriorly ; metanotum slightly oblique 

 and convex. Scutellum flat, with four bristles. 



Abdomen 9 ovate ; first segment somewhat slender at base. 

 Legs stout, but only middle femora thickened basally ; all fem- 

 ora, especially the posterior pair, with a series of short spines 

 beneath towards apex ; middle tibire alone spurred at apex. 

 Wings with first vein bare, and approximated to the auxiliary ; 

 small cross vein is before the middle of discal cell ; third and 

 fourth veins parallel ; anal cell obtuse. 



This ortalid genus evidently belongs in the subfamily Rich- 

 ardiinse somewhere near the genus Hcmi.vontha Lw., from 

 which it differs mainly in the basal position of the small cross 

 vein. The type is the following species. 



Zeugma palposa sp. nov. (Plate VI, Fig: i.) 



9 Rufous, with bluish-black abdomen. Lateral vertical angles of front, 

 and the ocellar region, shining, otherwise front is opaque; one pair of 

 fronto-orbital bristles which are above the level of anterior ocellus. 

 Frontal orbits towards antennae, orbits of face, cheeks, lower part of 

 occiput, and an oblique line across occiput from lower part of posterior 

 orbits to neck, silvery. Face more yellowish than front, with a brownish 

 spot on each side near the oral margin ; clypeus yellowish. Antennae yel- 

 lowish-brown ; third joint darker at apex, about five or six times as 

 long as the second, widest at base and tapering slightly to a rounded 

 apex. Palpi distinctly flabellate, yellow at base, whitish at its very broad 

 tip, with a brown transverse median band, entirely silvery in certain 

 reflections. Lateral turgid portion of the occiput black. Mesonotum sub- 

 opaque, blackish in the middle of the anterior margin, with a median 

 and lateral whitish pollinose stripe. Pleura polished, black, yellow pol- 

 linose near the coxae ; metanotum shining, rufous ; halteres yellow. Ab- 

 domen shining, with short appressed hairs ; ovipositor polished, the 

 first joint not as wide, but nearly as long, as the two last abdominal seg- 

 ments. Legs yellow, with brownish femora bearing black spines ; the 

 hind femora are somewhat constricted or indented near the bases on 

 the inside. Wings hyaline, without spots. Length 7 mm. 



One specimen. Paramaribo, Dutch Guiana (K. Mayo). 



