BY W. MACLEAY, F.L.S. 459 



lateral margins, a fascia fiom it near the base almost to the 

 suture, and another of the same wavy character near the 

 apex, but much wider than in S. ornata. The under surface is 

 pale piceous. 



Long. 4 lines, lat. 2j lines. 



50. SiLPHOMORPHA BIVITTATA, n.sp. 



Black, nitid. Head and thorax slightly opaque, the latter 

 longer a little than usual in the genus, not much emarginate in 

 front, scarcely rounded at the posterior angles, with a thin reddish 

 lateral margin. Elytra nearly as wide as long and quite smooth, 

 with a very narrow reddish lateral margin, and a broad yellow 

 vitta, widest on the anterior portion, extending from the middle 

 of the base of each elytron almost to the apex near the suture. 

 Beneath piceous. 



Long. 2 J lines, lat. 1| line. 



51. Adelotopus brevipennis, n.sp. 



Ovate, black, nitid, smooth, subconvex. Head transverse, 

 broadly rounded in front. Thorax a little wider than the length, 

 a little emarginate in front to receive the head, much reflected 

 on the lateral margins, wider at the base than at the apex, and 

 truncate, with the posterior angles acute. Elyti-a about the width 

 of the thorax, twice the length, and broadly truncate at the apex, 

 with the lateral margins less widely reflected than those of the 

 thorax. Beneath piceous black, very nitid. 



Long. 3 lines, lat. 1^ line. 



This species differs in the shorter and broader body from all of 

 the genus I have seen. 



52. Adelotopus elongatulus, n.sp. 



Elongate, black, nitid, smooth, subconvex. Head as in the 

 last-described 8i)ecies. Thorax of the same form, but the lateral 

 margins narrower and of a piceous hue, and all the angles very 



