PRIONOMMA. 



17 



large, reniform ; geiiae small, sharply ungulate 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, obconieal, 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 tootli 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 liori- 

 zontall}^ behind in a freely projecting, obtusely pointed process. 

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

 long : tibia? canaliculate along each face close to the outer, or 

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

 A\"ith 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. (S(i, p. 28, pi. 13, fig. 51 (179o). 

 Prionus tranquobaricus, Fah. Ent. Syst. Suppl. p. 141 (1798). 

 Prionomma orientalis, Whife, Cat. Coleopt. B. M., Longic. i, p. 19, 



pi. 1, tig. 8 (18--,.3). 



S . Black or brownish black in 

 colour. Head glossy, sparsely 

 punctured. Antennge reaching to 

 the apical third or fourth of t le 

 elytra ; first joint nitid, sparsely 

 punctured, third to ninth nitid 

 above, except in the poriferous 

 areas lying anterior to the dorsal 

 carinse, third twice as long as the 

 first and about half as long again 

 as the fourth. Pronotum very 

 glossy, almost imj)unctate in the 

 niiddle, sparsely punctured near 

 the sides. Elytra very feebly and 

 j^ sparsely punctured, \\\\\\ little 

 or no gloss. Hind breast covered 

 with a rather long brownish- 

 tawny pubescence. Tibia3 and the 

 anterior four femora asperate at 

 pj„ 5 their ventral edges. 



Prioiionum atratum, Gmelin, cS • ? • Legs and antennae shorter 



VOL. I. C 



