208 Miss G. Ricardo on 



with stout black bristles at sides. Scutellum bordered with a 

 thick row of black bristles and a few black hairs intermixed. 



Abdomen black ; the pale tomentose segmentations become 

 wider at the sides, pubescence and the bristles at sides black. 

 Genitalia rather large, the upper pincers partly tawny, 

 pubescence black. Legs blackish, the tibise and tarsi reddish 

 brown, pubescence black, long soft hairs on undersides of 

 femora and tibise, the tips sometimes inclining to tawny 

 colour, bristles black and numerous. Wings clear, veins 

 reddish brown. 



Walker, when he created the genus JSusa in 1851, evidently 

 overlooked the fact that his species here mentioned would 

 belong to it. 



Nusaformio, ? c^ , Walker. 



Ins. Raund. Dipt, part ii. p. 106 (1851) ; id. List Dipt. Brit. Mus. vii., 

 Suppl. 3, p. 564 (1855). 



Type (female) from East India. 



Three females and four males from Trincomalee, Ceylon 

 ( Yerhury) . 



This species is distinguished from Nusa grisea, Hermann, 

 from Formosa, by the shorter rounder shape of the third 

 joint of antennae; in N. grisea this joint is distijictly elon- 

 gated and longer than the first joint, whereas in this species 

 it is not so long. The honey-yellow colour of the legs in 

 the Formosan species is here confined to the knees, otherwise 

 it generally resembles N. grisea. The ovipositor is small, 

 armed with stout black bristles ; the genitalia of the males is 

 also rather small, with long narrow upper pincers, the lower 

 pair shorter. Thoracic and scutellar bristles very stout, the 

 shorter stout ones on the legs yellowish or whitish. Mous- 

 tache composed of yellowish-white bristles, with black 

 bristles on the lower part of the face. In the type and one or 

 two ef the other specimens two or more stray black bristles 

 appear in the middle of the moustache. 



There are several specimens in the Brit. Mus. Coll. allied 

 to these three species, but different, not in sufficiently good 

 preservation and chiefly isolated specimens, so that it is not 

 advisable to describe them. 



Nusa yerhuryi, ^ ? , sp. n. 



Type (male) from Hiniduma, Ceylon, 28. iv. 92 (Yerhury). 

 Type (female) from Kottawa, Ceylon, 19. iv. 92 [Yerhury\. 

 A robust, medium-sized, blackish species with wholly black 



