246 



JAMES WATERSTON. 



Thorax : pronotum \\ith the pattern everywhere distinct, transverse on more than 

 the anterior (ventral) half, raised definitely only on the posterior half ; the last two 

 rows of cells with thickened walls, but the extreme postero-lateral angles narrowly 

 nearly smooth ; the posterior row of bristles (24-26) stands medianly almost at the 

 edge, but passing towards the spiracle in front of the smoother postero-lateral 

 angles ; on the raised area in front of the regular row are one or two bristles, 

 while on the smoother descending area are (a) 4 minute bristles (2 : 2) just above 

 the neck, (6) an isolated bristle midway between each anterior bristle of 

 these pairs and the side of the sclerite, and (c) 2-3 bristles, wide apart, on 

 each side of the mid line just in front of the raised area (this arrangement occurs also 

 in the following species). Prosternum transverse diamond-shaped,v ery slightly 

 truncate posteriorly ; pattern coarse, raised, and only two minute median bristles 

 (1:1) exactly on the hind edge. Mesonotum except anteriorly (below the pronotum) 

 and narrowly before the suture, where there is a moderate normal raised reticulation. 





Fig. 6. Chiloneurus afer, sp. n., $ ; (a) riglit fore wing ; (b) left mandible. 

 C. cyanonotus, sp. n., $ ; (c) radius of right fore wing. 



with the entire surface covered by much raised fine elongate setigerous cells, the bristles 



being sparser anteriorly. Axillae (9-10 bristles) and scutellum with regular much 



raised cells with thickened walls ; besides the patch of modified bristles the scutellum 



bears upwards of 40 ordinary bristles. Sternopleurae with regular raised 



pattern, coarsest on sternum, which bears 12-14 minute bristles postero-medianly, 



and on pleurae anteriorly, and finest on the middle of the latter ; behind, especially 



ventrally, the pleurae are striate. 



Wings : fore wings (fig. 6 a) nearly two and a half times as long as broad ; length, 

 ri mm. ; breadth, •45 mm.; submarginal : marginal: radius: post- marginal, 

 approximately in the ratio 8:3; 1:1, the last two more nearly 4 : 3. There are 

 10 heavier and 4-5 hyaline bristles on the submarginal and base of the marginal ; 



