508 MR. F. P. PASCOE ON THE COLEOPTERA OF PENANG. [Nov. 22, 



large, very distinct, scar-like patch, strongly punctured, just above 

 the spine, and the other has the disk closely punctured, except a 

 smooth narrow stripe on each side advancing from the base. 



DlOSYRIS. 



Caput antice transversum, inter antennas projectum, pone oculos 



elongatum, haud angustatum. 

 Antennae basi subapproximatce, inter oculos insertce. 

 Oculi rotundati, a basi antennarum remoti. 

 Prothorax suboblongus, antice posticeque latitudine cequalis. 

 Femora abrupte clavata ; tarsi breviusculi, subeequales. 



Head elongate and not narrowed behind the eyes ; face short and 

 transverse, antennary tubers approximate, forming a ridge in front, 

 situated between but not near the eyes. Antennae as long as or longer 

 than the body, plumiferous ; scape moderately long, clavate, curved ; 

 the third joint longer, also curved ; fourth and fifth shorter ; the 

 sixth longest of all ; the rest very considerably shorter in the female, 

 much less so in the male. Eyes rounded, nearly entire. Palpi short, 

 equal, linear, obtuse. External maxillary lobe plumose. Prothorax 

 rather longer than broad, the anterior and posterior margins of 

 nearly equal width, toothed at the sides, the disk irregular. Elytra 

 broadest at the base, very irregular, the sides slightly narrowing 

 posteriorly, the apices rounded. Legs, the intermediate and pos- 

 terior pairs gradually longer ; femora abruptly clavate, the posterior 

 much shorter than the abdomen ; tibiae slender ; tarsi rather short, 

 nearly equal. Anterior coxae globose. Anterior acetabula largely 

 angulated. Prosternum raised to the level of the coxae. Mesoster- 

 num declivous. 



Evidently allied to Mythodes, J. Thorns., but differing in several 

 respects from the characters of the genus as given by its author. 



This genus is as remarkable as any other in the series of nearly 

 isolated genera comprised in this and some of the allied subfamilies. 

 It seems scarcely advisable to retain the Rhagiomorphince, which can 

 only be recognized by their emarginate or lunate eyes from the Ste- 

 noderince, which have rounded entire or nearly entire eyes. The 

 plumosity of the antennae and of the posterior tibiae of the species 

 described below is common to both sexes. The male is the smallest, 

 and has the last five joints of the antennae much more elongated 

 than the female : one of these measures 4| lines only, while a female 

 measures eleven. The whole insect looks as if highly varnished, 

 excepting, however, the last five antennal joints ; and the elytra seem 

 to have contracted or crumpled up in the process. 



DlOSYRIS MIRANDA. (PI. XLI. fig. 7.) 



D.fulva, polita, fusco variegata. 



Fulvous yellow varied with dark brown, shining as if varnished ; 

 head finely punctured, above the mouth a deep ^-shaped impression, 

 antennary tubers divided by a narrow groove ; prothorax constricted 

 anteriorly and posteriorly, the disk with nine callosities, exclusive of 



