ncio Species of Ilisteri I o . 38.5 



coarsely and somewhat closely punctured, the posterior margin 

 of the latter is not raised; prosternum, keel very narrow, 

 widening out clliptically between the coxib, where it is mar- 

 gined with a stria, anterior lobj feebly punctulate, with a 

 clear marginal stria anteriorly ; mesostcrnum rather deeply 

 cut out to receive the base of the prosternum, the marginal 

 stria complete and well-marked, leaving a fairly wide mar- 

 gin anteriorly, except at the incision, where it is extremely 

 narrow and feebly sinuous ; the anterior tibia3 are 4-5- 

 d(!ntate. 



llab. Borneo {Doherfy). 



Note. — Plalysoma elingne, Lew. — The prosternal keel is 

 narrow in this 8[)ecies and without scul])ture, the anterior lobe 

 is margined with a stria and visibly [)unctate, the mesosternum 

 is emarginate, not incised as in solitarlunij and the stria is 

 sinuous. 



Platysoma constnctum, sp. n. 



Oblongum, subparallelum, pariim depressuta, nigrum, nitidum ; 



elytris striis l«-3'" integris, rectis, 4^ apicali ; prosterno antice con- 



stricto ; pygidio punctato, 

 L. 3| mill. 



Oblong, rather parallel at the sides, a little depressed, black, 

 legs reddish; head lightly impressed in front, obscurely punc- 

 tulate, stria rather fine, equally clear transversely as over the 

 eye ; thorax impunctate, stria complete, anterior angles rather 

 abruptly turned in from a point agreeing with the line of the 

 neck ; elytra with three complete outer stria well marked 

 and nearly straight, fourth straight and apical, occupying 

 about one third of the elytron, apices impunctate ; propy- 

 gidium and pygidium evenly but not closely punctured ; the 

 prosternal keel is very remarkable, and is limited almost to the 

 region of the coxa? ; between the coxa3 it is smooth and 

 without striee, in front of the cox^e it is constricted and 

 abruptly depressed, and is gradually flattened out and merged 

 in the lobe ; mesosternum rather widely emarginate, with 

 the angles on each side a little prominent, stria complete ; 

 anterior tibia; 4-dentate. All the sternal plates are impunc- 

 tate. 



This species is narrower and more parallel than P. dufaliy 

 Mars., but in its general outlhie it somewhat resembles it. 



Hab. N.W. Australia. 



LiOPYGUS, gen. nov. 

 There are certain species which until now have been iudis- 

 Ann. & Mag. iV. Hist. Ser. 6. Vol. viii. 26 



