BY W. MACLEAY, ESQ., r.L.S. 201 



404. — Semanopterus convexiusculus. n. sp. 



Length 7|- lines. 

 Black, subnitid, subconvex. Head transversely rugose, with 

 a small tubercle in the centre of the forehead, and with the 

 clypeus truncate. Thorax finely punctate with the impressions 

 on the median line more shallow, more elongate and less punctate 

 than in the last species. Scutellum subtriangular and smooth 

 with two or three punctiform impressions in the centre. Elytra 

 strongly striato-punctate, with the interstices rather elevated, and 

 the punctures towards the apex small and dense. Under surface 

 and legs as in the last species. 



405. — Cryptodus subcostatus. n. sp. 

 Length 9 lines. 

 Brownish black, subnitid, and of a broad flattish form. Head 

 densely punctate, with two small tubercles on the forehead, and 

 with the clypeus rounded and reflexed. Thorax subconvex, finely 

 but not densely punctate, with the median line broadly but not 

 deeply impressed. Elytra flat, of the width of the thorax, and 

 slightly dehiscent, with the suture and three tolerably distinct 

 lines on each elytron elevated and thinly punctate, with the 

 intervals occupied by three irregular rows of oval variolous impres- 

 sions, and with a strong tuberosity near the apex on each elytron. 

 Under side of body and legs piceous, thinly punctate, each puncture 

 bearing a very short yellow decumbent seta. Antennae with the 

 first joint rough, punctate, triangular and very large, completely 

 covering the rest of the antennas excepting the club. Mentum 

 with the base deeply and rather narrowly emarginate. 



406. — CriYPTODns obscurds. n. sp. 

 Length 8| lines. 

 Difiers only from the last in being opaque, in having the 

 clypeus less reflexed, the thorax more punctate and less convex, 

 the elytra shorter, and the form generally much narrower and 

 rather more convex. 



