570 MB. M. JACOB Y o^ THE [May 18, 



widely separated, extending to about the middle of the elytra, 

 shorter in the female, black, the lower four joints testaceous, the 

 second and third joint short, equal, fourth and following joints 

 longer, equal ; thorax scarcely one-half broader than long, the 

 sides rounded before the middle, very little constricted at the base, 

 the basal margin obliquely rounded at the angles, the surface 

 rather convex, not perceptibly punctured, testaceous, very shining; 

 elytra wider at the base than the thorax, of the same colour, very 

 minutely and rather closely punctured : underside pale piceous ; 

 legs rather robust, testaceous, the tibiae mucronate, the first joint 

 of the posterior tarsi as long as the following two joints together ; 

 claws appendiculate ; the anterior coxal cavities open ; prosternum 

 very narrow, convex between the coxse. 



Bab. Mashon&lsind (G.Marshall). Coll. Brit. Mus. and my own. 



One of the smaller species, which may be known by the piceous 

 head and underside and the im punctate thorax. 



Malacosoma palliuum, n. sp. 



Pale testaceous, shining; thorax subquadrate, impunctate; elytra 

 microscopically punctured. 



Leugth 2| lines. 



Much larger than the preceding species and of very pale tes- 

 taceous colour; the head broad, impunctate, the frontal tubercles 

 broadly transverse, the apex of the clypeus very broad, apex of 

 the mandibles black ; the antennse rather widely separated at the 

 base, testaceous, the second and third joints short, nearly equal, all 

 the following joints elongate ; thorax one-half broader than long, 

 subquadrate, the sides very slightly rounded in I'ront of the 

 middle, anterior angles oblique, indistinct, posterior margin some- 

 what sinuate, the surface entirely impunctate ; scutellum trian- 

 gular ; elytra scarcely wider at the base than the thorax, sub- 

 cylindrical, extremely minutely punctured, only visible under a 

 strong lens : underside and legs coloured like the upper surface ; 

 all the tibije mucronate, the metatarsus of the posterior legs as 

 long as the following two joints together ; the prosternum in shape 

 of a very narrow ridge, convex ; the anterior coxal cavities open. 



Hab. Mashoualaud (G. Marshall). A single specimen in the 

 British Museum. 



This Malacosoma may be known by its uniform very pale colour 

 and the ini punctate thorax and extremely iinely punctured elytra. 

 The following species is closely allied. 



Malacosoma dalmawi, n. sp. 



Pale testaceous ; antennse long and slender ; thorax transverse 

 with rounded sides, nearly impunctate; elytra very finely and 

 closely punctured. 



Length 2^-3 lines. 



Head rather long, impunctate, the frontal elevations transverse, 

 bounded behind by a deep groove ; carina acute, linear ; eyes large ; 



