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



Taken also by Mr. Wallace at Singapore and Sarawak. One of 

 Mr. Lamb's specimens is an incb in length. 



Chloridolum cinnyris. 



C. angustatum, aureo-viride ; prothorace apice subtilissime trans- 

 versim striato ; scutello obsolete punctato ; elytris vittis tribus 

 cyctneo-viridibu8 ornatis ; antennis pedibusque chalybeato- 

 cyaneis. 



Narrow, golden-green ; head finely punctured, and slightly ver- 

 tically striated between the eyes ; prothorax oblong, broader than 

 the head, finely transversely striated, on the depressed apical portion 

 the striae are nearly obsolete ; scutellum triangular, scarcely punc- 

 tured ; elytra covered with small crowded punctures, the suture and 

 sides striped with bluish green ; body beneath greenish golden-yel- 

 low ; legs glossy chalybeate blue, the posterior very long, the inter- 

 mediate and anterior femora greenish ; antennae with the scape green, 

 the remaining joints purplish blue deepening into blackish. Length 

 6 lines ; posterior legs 10 lines. 



A more slender form than C. thomsoni, the apex of the prothorax 

 very faintly striated, not more strongly than the rest as in C. thom- 

 soni, and the scutellum so finely punctured that it might almost be 

 said to be impunctate, while in C. thomsoni the punctures are coarser 

 than those on the elytra. Chloridolum has been separated from 

 Aromia (Callichroma) on account of its more slender antennae and 

 legs. As in many other cases, this is only a question of degree ; but 

 these characters, vague though they be, appear to mark a tolerably 

 natural section of the old genus Callichroma. It is worth remarking 

 that, taking Callichroma in its widest sense, Mr. Wallace found twenty- 

 nine species scattered among the islands of the Malayan archipelago, 

 including New Guinea, while only a single specimen (C. Cinderella, 

 White) is known from Australia. In other respects the genus is 

 cosmopolitan. 



There is also in the collection a single female of a species belong- 

 ing apparently to M. Thomson's genus Leontium. 



Pachyteria. 



Pachyteria, Serville, Ann.Soc.Ent. deFranca, 1. 1 1. p. 553 (1834). 

 Nirteus, Newman, Charlesworth's Mag. Nat. Hist. iv. p. 194 

 (1840). 



Pachyteria equestris. 



Nirceus equestris, Newman, Entom. p. 79. 



Mr. Newman described this magnificent insect from a specimen, 

 without a locality, in the then collection of this Society. It differs 

 from the next species in its more transverse prothorax strongly an- 

 gulated at the sides, the distinctly separated punctures, the rounded 

 non-dehiscent elytra, and antennae with the five terminal joints black. 

 In their bright and strongly contrasted colours they are otherwise 

 almost alike. 



