146 MARTIN JACOBY 



mination, the specimens looked upon me at the time as varieties 

 probably representing closely allied but distinct forms. 



29. Platyxantha quadraticollis, sp. n. — Fulvous, the antennae 

 black , the eighth and ninth joint whitish , thorax impunctate , 

 bifoveolate, elytra metallic green or blue, closely longitudinally 

 costate, the interstices transversely rugose. 



Length 3 lines. 



Head impunctate, the vertex fulvous, the lower part of the 

 face, flavous, clypeus triangularly raised, antennae nearly extend- 

 ing to the end of the elytra, black, the eighth and ninth joint 

 yellowish-white, third joint slightly longer than the fourth, all 

 the joints covered with short pubescence, thorax scarcely broader 

 than long, the sides slightly narrowed at the base, very little 

 rounded before the middle, the surface impunctate, fulvous, with 

 a deep round fovea at each side, scutellum piceous, elytra rather 

 depressed, each with nine or ten distinctly raised costae, metallic 

 green or blue, the interstices transversely rugose, tibiae and 

 tarsi obscure fuscous, or flavous, like the underside, the first 

 joint of the posterior tarsi longer than the following joints 

 together, tibiae unarmed, anterior coxal cavities closed. 



Hab. Sipora. 



The sculpture of the elytra in this species resembles that of 

 several species of Ozomena (Theopea) and the general structural 

 characters also agree with that genus, but the general shape of 

 the thorax is more quadrate, the elytra are less narrow and 

 elongate, and the antennae are much less pubescent than in the 

 typical species of Ozomena. P. quadraticollis is closely allied to 

 P. submetallica,, Jac. from Sumatra but I think is distinct on 

 account of the strong elytral costae and their bright coloration, 

 several specimens are before me , which all seem to belong to 

 the female sex. 



30. Ozomena longicollis, n. sp. — Black, the terminal three 

 joints of the antennae white, thorax slightly longer than broad, 

 impunctate, elytra metallic blue, the suturai and lateral margins 

 purplish , closely punctured , transversely rugose and longitudi- 

 nally costate. 



