154 ]Mr. B. P. Uvarov's Notes on 



based partly on the genotype, partly on another species 

 of the same genus, described below as new. Walker 

 originally included in the genus Platacanthns three species, 

 but he actually indicated morosus, as the genotype ; two 

 other species {cervirms and includens) are Australian and 

 have been since removed to other genera {Azeloia and 

 Exarna, respectively). 



1. Platacanthoides morosus (Walk.). 



1870. Platacantlms morosus Walker, Cat. Derm. Salt. B. M., 



iv, p. 714, no. 1. 

 1910. Platacanthoides morosus Kirby, Syn, Cat. Orth., 



iii, p. 559, no. 1. 



$. Fi'ontal ridge very feebly convex, scarcely impressed just 

 below the ocellum, very minutely and indistinctly jiunctured near 

 the fastigium, with the margins obtuse and not raised. Fastigium 

 of the vertex scarcely impressed, oval, slightly longer than broad. 

 Occiput with a feeble carinula. Pronotum with the median keel 

 scarcely intersected by the first two sulci ; lateral keels feebly 

 convex, slightly cut by sulci ; metazona distinctly shorter than the 

 prozona, with the hind angle obtuse, rounded. Prosternal tubercle 

 distinctly widened towards the obtusely emargmate apex. 



Length of body 30 mm. ; of pronotum 7 mm. ; of elytra 16-5 mm. ; 

 of hind femora 17 mm. 



British Museum specimen : S. Africa {A. Smith), 1 $ 

 {Walker's type). 



2. Platacanthoides bituberculatus, sp. n. 

 (Plate I, figs. 9 and 10.) 



IJ1870. Caloptenvs crassus Walker, Cat. Derm. Salt. B. M., 

 iv, p. 694, no. 39 (partim). 



(^. Smooth. Frontal ridge below the ocellum feebly impressed, 

 above it distinctly punctured, with the margins somewhat raised. 

 Fastigium of the vertex distinctly impressed, paj-allel-sided, about 

 twice as long as broad. Occiput without a carinula. Pronotum 

 with the median keel distinctly cut by three sulci; lateral keels 

 practically straight, distinctly intersected by the sulci; metazona 

 subequal to the prozona ; hind angle a little more than 90°, slightly 

 rounded apically. Elytra reaching the hind knees. Prosternal 

 tubercle slightly widened towards the apex, which is rotundato- 

 truncate. Supra-anal plate quadrangular, as broad as long; 



