Pltyloyhaya Malayana. 127 



a longltiuliiiMl groove; anterior margin very obtusely angled, 

 lateral angles distinct, obtuse ; epistome subquadrate, sides 

 nearly straight, very slightly converging backwards, rounded 

 and converging at the apex ; apical border concave, surface 

 rugose-punctate ; encarpae narrowly cultrifurm, their surfaces 

 plane ; antennas nearly two-thirds the length of the body, five 

 outer joints somewhat broadly dilated, purplish-black, the seventh 

 to the ninth trigonate, gradually increasing in width. Thorax 

 subconic, sides nearly straight and converging from base to apex, 

 hinder angles furnished with a short obtuse tubercle ; surface 

 coarsely and closely punctured. Elytra narrowly oblong, subcy- 

 lindrical, not excavated below the basilar space ; humeral callus 

 prominent ; surface coarsely and closely punctured, punctures near 

 the suture and on the hinder disk arranged in longitudinal striae, 

 interspaces strongly elevate-reticulate, costate on the hinder disk ; 

 on the outer disk are three longitudinal costae, which are more or 

 less interrupted by the reticulations of the general surface. 



This species is at once known from its congeners by the rugo- 

 sity of the upper surface of tire body, greatly resembling in this 

 respect certain species of Colusp'is. 



B. Apex of epistome continuous with the front. 



32, Corynodcs gratiosus, Baly. 



Plalycorynus gratiosus, Baly, Desc. New Gen. and Spec. Phyt. 



p. 7. 

 Corynodes gratiosus, Marsh. Journ. Lin. Soc. Zool. viii. p. 41. 

 Anguste oblongus aut subelongatus, convexus, saturate metal- 

 lico caeruleus, viridi vix micans ; thorace conico-convexo, 

 subremote irregulariter punctato ; elytris viridi-caeruleis, 

 caeruleo-limbatis, infra basin leviter transversim depressis, 

 sat crebre punctatis, punctis confuse seriatim dispositis; 

 antennis clavd valde dilatata. 

 Long. 5 — 6 lin. 



Hab. Tringanee, collected by Count de Castelnau ; also Birmah 

 and Cambodia. 



Front swollen, obliquely depressed and excavated anteriorly ; 

 face separated from the encar] ae by a sutural groove, its 

 anterior border rounded, slightly depressed and excavated, sur- 

 face coarsely punctured ; epistome broader than long, sides 

 obliquely converging backwards, its apex very broadly truncate, 

 surface closely punctured ; encarpae narrowly cultriform ; an- 



L 2 



