SEBiETHE, 



383 



less convex and either punctate or impunctate; vertex often 

 separated from the front by an impressed line in the inferocular 

 space, this liue forming the posterior boundary of the frontal 

 tubercles; the latter always present but not much elevated, con- 

 tiguous, separated by an impressed longitudinal line along the 

 middle ; interantennal carina always well developed; mouth-parts 

 more or less exserted. Antennae extending to a point between 

 the middle of the elytra and the apex but never beyond; first 

 segment long and club-shaped, second always smaller than first and 

 often than third ; the relative lengths of the third, fourth, fifth 

 and following segments vary ; except the two or three basal seg- 

 ments all the others are always covered with fine hairs, a few 

 of which are sometimes longer t han the rest ; t he last segment is 

 generally pointed. Prothorax always broader than long, somewhat 

 narrowed in front, but the relative length and breadth vary, so that 

 sometimes theprothorax appears more nearly quadrate than trans- 

 verse ; sides generally rounded, with margins somewhat explanate 

 and reflexed ; as a rule each of the anterior and posterior lateral 

 angles bears a fine seta, and very often the former are thickened 

 and sometimes slightly produced : anterior and posterior margins 

 usually forming wide curves ; surface either punctate or impunc- 

 tate ; sometimes it is very finely and sparsely punctate, to see 

 which a high power must be used. Scutellum triangular, often 

 comparatively large, with surface smooth and impunctate. Elt/tra 

 sometimes distinctly though slightly broader at the base than 

 the prothorax, often hardly broader, but immediately behind they 

 are gradually broadened; sometimes they are nearly parallel-sided 

 with the apex broadly rounded ; lateral margins generally slightly 

 explanate and reflexed; surface always confusedly and finely 

 punctate, the punctures varying in their degree of closeness, and 

 often stronger than those of the pronotum, when the latter is 

 punctate ; the apical edges and to a certain extent the lateral edges 

 of the elytra, bear sparsely distributed fine setif'orm hairs. 

 Underside: anterior coxal cavities open behind; prosternum 

 oblong-elongate with sides sinuate. Legs not very long, moderately 

 robust; tibiae channelled on the outer side; posterior femora 

 thickened and channelled on the under.-ide for the reception of 

 the posterior tibiae, w hich have a spine ar their apex ; first segment 

 of posterior tarsi longer than the corresponding segment of the 

 front and middle legs, and often equal to the two following seg- 

 ments of the hind tarsus together ; claw-segment projecting beyond 

 the bilobed segment ; claws appendieulate. In the male the front 

 and middle tarsi are sometimes expanded. 



In some cases there is a superficial resemblance betw een species 

 of Sebcethe and those of Hyphasoma, but the two genera are 

 differentiated by the latter having the first segment of the posterior 

 tarsi inflated. 



Range. India, Malay Archipelago, Philippine Is., New Guinea, 

 Indo-China, China and Japan. 



