1866.] MR. F. P. PASCOE ON THE COLEOPTERA OF PENANG. 235 



Saimia BITUBEROSA. 



Fusca, grisescente pubescens ; prothoraee medio valde bituberoso. 



Brownish, with a thin greyish pubescence, forming on the elytra 

 little longitudinal silky ridges ; head rather broad and thinly pubes- 

 cent in front ; prothorax about equal in length and breadth, two ap- 

 proximate strongly marked tubers a little before the middle, the rest 

 of the disk tolerably regular, on each side anteriorly a short thick 

 tooth ; scutellum transversely quadrate ; elytra rather short, thinly 

 punctured, a broad callus on each side at the base ; body beneath 

 and legs chestnut-brown, shining, the pubescence thin and spotty ; 

 antennae more than twice as long as the body, chestnut-brown, the 

 basal joints with greyish pubescent spots, the middle and terminal 

 joints with the base and the tip of each greyish. Length 9 lines. 



Agelasta. 

 Agelasta, Newman, The Entom. p, 288. 



Agelasta lambii. (PI. XXVI. fig. 7.) 



A.fusca,pube alba brevissima et densissima indula ; capite pro- 

 thoraceque albo vittatis ; elytris albis, ultra medium fascia 

 angusta vittisque fuscis ornatis. 



Covered with a very short but very dense white pubescence, varied 

 with lines or stripes of dark chocolate-brown, which are very nearly 

 glabrous ; head with one central and two lateral yellowish-white 

 stripes, the latter interrupted above the eye, the cheeks white ; pro- 

 thorax yellowish white, with two central brown stripes connected 

 posteriorly, and three lateral stripes, the two innermost united an- 

 teriorly and all continuous with the stripes on the head ; scutellum 

 transversely scutiform ; elytra minutely punctured, of a clear chalky 

 white to behind the middle, where they are crossed by a narrow ir- 

 regular brown band, which throws out towards the apex two (or 

 three) stripes on each side ; body beneath black, shining, the sides 

 pubescent, white ; legs pure white, the tarsi dark brown, except the 

 lobes of the third and middle of the fourth joints ; antennae longer 

 than the body in the male and twelve-]omte&, in the female shorter 

 than the body and eleven-jointed, dark brown, the second and bases 

 of the third to the sixth joints white. Length 7-8 lines. 



Closely allied to A. wallacei, but differing in the absence of the 

 brown band at the base of the elytra, and the presence of a supple- 

 mentary joint in the antennae of the male. 



Agelasta polynesus, White, Catal. Long. Brit. Mus. (1855) 

 pi. 10. f. 9 (sine descript.) ; Proc. Zool. Soc. 1856, p. 410. 



Apparently a common species at Singapore and Sarawak. 



Agelasta sobrina, Pascoe, Long. Malay, p. 127. 



In the "Wallaceau collection there are specimens from Singapore, 



