LAMB— DIPTERA : LONCH^ID^, SAPROMYZID^, EPHYDRID^, ETC. 333 



Legs black except for very indistinctly paler knees, the first two joints of the 

 front tarsi and the first three joints of the middle and hind tarsi which are yellow. 



Abdomen. Entirely shining black with black hairs. 

 Size. 2 to 2^ mm. 



Localities. Seychelles. Silhouette : Mare aux Cochons, plateau and forest above, 

 VIIL— IX. 1908. Mahe: Cascade Estate, about 1000 feet, 1908—9. 



37. Meroscinis rugosa, n. sp. 



This difiers from the last species as follows : 



Head (PI. 16, fig. 8). The shining triangle is not so strongly blue and is pointed 

 at the end. The antennal joints are bright yellow-red with the arista paler and finely 

 pubescent. 



Thorax. The punctation of both thorax and scutellum is coarser, that of the latter 

 being unusually coarse : the scutellum has a purplish tone of colour and a blunter tip ; 

 there are four scutellar bristles, the terminal pair being situated on small but noticeable 

 papillae, the two smaller side ones being also on papillae which are, however, smaller. 



Fig. 19. Meroscinis aneifrons, n. sp., wing. 



Wings with pale veins. 



All the legs have yellow trochanters, black femora with yellow knees, yellow tibiae 

 with a broad black or blackish ring round the middle, and entii-ely yellow tarsi. 



(Size as last species. 



Localities. Seychelles. Mahe: Cascade Estate, about 1000 feet; marshes on 

 coastal plain, Anse aux Pins and Anse Royale, I. 1909. 



HiPPELATES, Loew. 



Hippelates Loew, Berlin. Ent. Zeitschr., vii. (1863), p. 36. 



This genus was founded by Loew for certain American forms. Becker has described 

 one from Madeh-a (Archiv. Zool., i. 150), and De Meijere one from Java. Five species 

 occur in the Seychelles, one of which agrees with a published description. 



38. Hippelates nigricornis Thomson, Eugenics Resa, p. 607. 



Described from Ins. Rossi. 



Locality. Seychelles. Mahe : Anonyme Island, L 1909. 



