PRIONOMMA. 



17 



large, reniform ; genae small, sharply angulate below ; mandibles 

 strongly incurved below, acute at tip, each with a strong sub- 

 median tooth on the inner side. Antennae nearly as long as the 

 body, 11- jointed ; first joint short, obconical, less than twice as 

 long as broad, third to tenth rather broad, strongly serrate in 

 front, dentate behind at the apex, each carinate above with an 

 oblique poriferous face in front of the carina ; eleventh with a 

 transverse carina and projecting tooth near the middle. Pronotum 

 transverse, convex, armed on each side with two strong, sharp 

 spines one at the front angle, the other, longer and slightly 

 recurved just before the middle, its hind angles slightly projecting 

 and acute. Elytra less than twice as long as broad, rounded at 

 the apex ; the lateral edge is slightly turned up and forms a narrow 

 channel along each side. Prosternum prolonged almost hori- 

 zontally behind in a freely projecting, obtusely pointed process. 

 Last ventral segment sinuate in middle at the apex. Legs rather 

 long ; tibiae canaliculate along each face close to the outer, or 

 dorsal edge ; tarsi long and narrow, especially on the hind legs, 

 with the third joint cleft to the middle, its lobes narrow. 



2 . Legs and antennae shorter and narrower, the latter less 

 strongly serrate than those of the male. Last ventral segment 

 rather long, narrowed behind, rounded at the apex. 



16. Prionomma atratum, Gmelin (Prionus), Syst. Nat. (i) 4, p. 1818 



(1789). 



Prionus orientalis, Oliv. Ent. iv, no. 66, p. 28, pi. 13, fig. 51 (1795). 

 Prionus tranquebaricus, Fab. Ent. Syst. Suppl. p. 141 (1798). 

 Prionomma orientalis, White, Cat. C'oleopt. B. M., Longic. i, p. 19, 

 pi. 1, fig. 3 (18o3). 



J . Black or brownish black in 

 colour. Head glossy, sparsely 

 punctured. Antennae reaching f;o 

 the apical third or fourth of fie 

 elytra ; first joint nitid, sparsely 

 punctured, third to ninth nitid 

 above, except in the poriferous 

 areas lying anterior to the dorsal 

 carinae, third twice as long as the 

 first and about half as long again 

 as the fourth. Pronotum very 

 glossy, almost impunctate in the 

 middle, sparsely punctured near 

 the sides. Elytra very feebly and 

 sparsely punctured, with little 

 or no gloss. Hind breast covered 

 with a rather long brownish- 

 tawny pubescence. Tibia3 and the 

 anterior four femora asperate at 

 pjg 5 their ventral edges. 



Prionomma atratum, Gmelin, tf. $. Legs and antennae shorter 



VOL. I. C 



