Longicornia Malayana. 531 



callosity on each^ placed a little behind the middle, occa- 

 sionally a smaller and simple callosity of the same charac- 

 ter at the base ; antennae, body beneath, and legs, with a 

 slight gray pubescence. 



Length 9-10 lines. 



Stromatium. 



Stromatium, Serville, Ann. Soc. Ent. Fr. iii. 30 ; Lacor- 

 daire, Gen. viii. 282. 



Caput mediocre vel parvum, antice breve, verticale, 

 supra clypeum impressum ; tuberibus antenniferis 

 validis, basi approximatis, apice conico-productis. 

 Palpi breves, articulo ultimo vix triangulari. Anten- 

 nae corpore multo longiores ( c? ) , pilosae ; scapo ob- 

 conico, leviter arcuato, articulo tertio quarto longiore, 

 sequentibus subsequalibus. Prothorax transversus, 

 convexus, lateribus rectus vel rotundatus, et in $ 

 tomentosus, margine postico latiore. Elytra elonga- 

 ta, parallela, sutura spinosa. Pedes modice elongati ; 

 femora compressa ; tarsi intermedii et postici aequales. 

 Prosternum modice latum (in 8. strepente angustum). 

 Mesosternum amplum. 



M. Lacordaire divides this genus into two sections, 

 according as the male has the prothorax furnished with a 

 tomentose depressed patch on each side or not. .. I find 

 it, however, in all the species he has enumerated except 

 8. liirtum, L. Fairm., which is unknown to me. In 8. 

 asperidum and the new species here described, the pro- 

 thorax is rounded at the sides, the patch in question being 

 mostly underneath ; in the others the sides are straight, 

 and the patch is visible from above. No other instance 

 of such a structure occurs, I believe, among the Coleop- 

 tera, and its use is unknown. The patch is always large 

 and well limited, and densely tomentose.* SoJenophorus, 

 Muls., was founded on the female of 8. unicolor. 



* The European 8. unicolor, 01., is found at Kio Janeiro — possibly in- 

 troduced. My S. alienwn, from Espiritfi Santo, is closely allied and may 

 be the same, but, inter alia, the prothorax is so much narrower, and the 

 sides are so much straighter, that I think no Entomologist would unite 

 them until intermediate forms shall be found to demonstrate their identity. 



M M 2 



