new Species of H.hiQx\\26 . 385 



coarsely and somewhat closely punctured, the posterior margin 

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

 widening out elliptically between the coxte, where it is mar- 

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

 clear marginal stria anteriorly ; mesosternum rather deeply 

 cut out to receive the base of the prosternura, 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 tibia) are 4-5- 

 dentate. 



Hah. Borneo {Doherty). 



Note. — Platysonia elingue. Lew. — The prosternal keel is 

 narrow in this species and without sculpture, the anterior lobe 

 is margined with a stria and visibly punctate, the mesosternum 

 is cmarginate, not incised as in soUtariura, and the stria is 

 siimous. 



Platysoma constrictum^ sp. n. 



Oblongum, subparallelum, parum depressum, nigrum, nitidura ; 



elytris striis l*-3" integris, rectis, 4^ apicali ; prosterno antico coii- 



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 striae 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 coxa3 ; between the cox^e it is smooth and 

 without strise, in front of the coxaB it is constricted and 

 abruptly depressed, and is gradually flattened out and merged 

 in the lobe ; mesosternum rather widely cmarginate, with 

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

 anterior tibiai 4-dentate. All the sternal plates are impunc- 

 tate. 



This species is narrower and more parallel than P. dufaliy 

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



Eab. N.W. Australia. 



LlOPYGUS, gen. nov. 

 There are certain species which until now have been indis- 

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



