new Species of Histeridae. 273 



Platysoma assumense, sp. n. 



Oblongo-ovatum, doprcssum, nifjrum, iiitiduin ; frontx; coiicava, 

 punctata, stria inti'gra ; pronoto luteribus dense punctato ; elytris 

 striis 1-3 integris, 4 dimidiata, 5 apicali, subhumerali externa 

 brevi, interna punctiformis ; jngidio convexo, grosse et dense 

 punctato. 



L. 3^ mill. 



Oblong-oval, rather flat, black and shining, legs somewhat 

 reddish ; the head, forehead and epistoma concave, clearly 

 and evenly, not densely, punctate, stria complete, transverse 

 part nearly straight; the thora.x, marginal stria complete, 

 narrowly canaliculate at the sides, fine behind the hea 1, and 

 behind the neck it deviates from the edge, the disc is micro- 

 scopically and sparsely |)unctured, but the lateral borders are 

 widely and conspicuously punctate and many of the punctures 

 are much larger than those on the head. Tiie elytra, lateral 

 margins clearly but finely punclulate, striaj, external humeral 

 short and relatively deep and is seen just below the shoulder, 

 the inner humeral is punctiform and evanescent at both ends, 

 1-3 dorsal complete, 4 dimidiate or faintly traceable beyond 

 the middle, 5 apical and nearly one third of theelytral length, 

 apical margin punctured and very minutely strigose. The 

 ])ropygidium andjiygidium are punctate, ])unctures round and 

 deep, closely set together on the pygiJiuin, less regularly on 

 the propygidium, the |)ygidium is convex ; the prosteriuim, 

 anterior lobe is marginate and clearly punctured over the 

 whole of its surface, at the base beyond where the marginal 

 stria terminates are some large shallow punctures, and on 

 either side of the keel before the coxai are similar punctures ; 

 the mesosteriium anteriorly is widely sinuous, the sinuosity 

 extending almost from aiigle to angle, anteriorly the mar- 

 ginal stria is fine and close to the edge, the under surface 

 generally is finely punctulate ; the anterior tibijs are 4- 

 dentate. 



P. novum, Lew., and rimarium^ Mars., resemble this 

 species; all have a convex pygidium and the thorax similarly 

 jtuiictured. 



JIab. Khasia Hills, Assam. 



Platysoma disparile, sp. n. 



Oblongo-ovale, subdepres-sum, piceura, riitidum ; fronte loviter 

 impressa, stria transversa utrinquc intorrupta ; pronoto inipunc- 

 tato ; elytris striis 1-2 integris, 3 late intorrupta ; pygidio 

 punctato ; tibiis anticis obtuse dentatis. 



L. 3| mill. 



