1888.] COLEOPTERA OF CHRISTMAS ISLAND. 541 



the prothorax is somewhat uneven and sparsely punctured on the 

 disk, and the elytra are punctate and have a brownish-grey pubes- 

 cence dotted with numerous glabrous spots. 



Praonetha perplexa, n. sp. 



Pube brunneo-grisea tecta ; prothorace punctata, elytris postice 

 gradatim declivibus, dense punctatis, nee cristatis, singula 

 tenuiter bicarinato, apicibus subrotundatis. 



Long. 9-14 millim. 



Head covered with a brownish or fulvous-grey pubescence, which 

 is distinctly fulvous on the cheeks and in spots on the front, especially 

 near tlie base. The pubescence almost conceals the punctures, which 

 are somewhat sparse on the front, cheeks, and vertex. Prothorax 

 with a close brownish-grey pubescence, with its sides apparently 

 feebly rugose, the punctures on the disk scarcely visible beneath the 

 pubescence. 



The elytra are distinctly and rather strongly punctured, espe- 

 cially towards the sides, and have a mixed pubescence of brownish 

 grey, fulvous grey, and ashy grey on the anterior two thirds, and a 

 fulvous-grey pubescence on the apical declivous portion. There is 

 also a small distinctly fulvous spot on each side of the rather broad 

 scutellum, the latter is brownish pubescent. The two ridges on each 

 elytron begin at about a third of the length from the base, and end 

 on the posterior declivous part at some distance from the apex, the 

 outer ridge extending back a little farther than the inner. Just 

 in front of the anterior termination of the inner ridge there is on 

 the disk of each elytron a broad and somewhat rounded shallow de- 

 pression, and in front of this again a broad and feebly raised hump, 

 but no crest. 



The underside of the body is covered with a brownish or fulvous- 

 grey pubescence, and each of the first four abdominal segments has 

 a distinctly tawny fringe on the posterior margin. The legs have a 

 somewhat mottled appearance, greyish sprinkled with dark brown. 



Antennae a little shorter than the body, with the basal joint dark 

 brown and sparsely fulvous pubescent, the remaining joints fulvous 

 grey, with their tips somewhat fuscous ; the fourth joint is about 

 as long as the second and third together, the fifth about half as long 

 as the fourth, the following joints gradually decreashig in length. 



The present species does not agree with any of the descriptions of 

 the numerous species of the genus ; but as many of these descriptions 

 are short and inadequate it is impossible to determine it with 

 certainty. 



MiCRACANTHA, Sp. ? 



A single slightly rubbed specimen, belonging to a species appa- 

 rently closely allied to, if not identical with, M. abdominalis. White. 

 The latter is a widely distributed species ; it ranges from N. Aus- 

 tralia (Port Essington) to Sumatra, and one specimen in the British 

 Museum Collection (the Coptops modica of Dejean's Catalogue) is 

 from the Phihpi)ine Islands. 



Proc. Zool. Soc— 1888, No. XXXVII. 37 



