a THE ENTOMOLOGIST. 



At once distinguished from any of its allies by the partly 

 costate, partly smooth elytra. Each of these has about eleven 

 round costa (counting the short subsutural one) ; the interstices 

 are deep and narrow, excepting the last, in which two or three 

 much broader, elongate, deep grooves separate the costa from 

 the lateral margins. A. formosa, Gestro, has almost similarly 

 sculptured elytra, but these have a flavous transverse band 

 below the middle, and the apex is metallic green, like the rest of J 

 the surface. Ij 



j^sernia costata, sp. n. 



Blackish, the femora and tibife flavous ; thorax deeply foveolate at 

 the sides, impunctate ; elytra with numerous highly-raised, partly- 

 connected longitudinal costae, black, the apical third portion flavous, 

 finely punctured. Length, 20 mill. 



Head impunctate, black, deeply foveolate between the eyes 

 antennre black, the fourth joint about one-half longer than the 

 third, following joints not longer. Thorax of the same shape as 

 in A. Meeki, but somewhat more elongate, the anterior margin deeply 

 concave, entirely impunctate, the disc without a central groove, the 

 sides deeply longitudinally excavate, the excavation irregularly foveo 

 late, another single fovea is also placed near the base at each side ; 

 scutellum ovate, impunctate. Elytra with their greatest convexity 

 rather before the middle, with three transverse depressions at the 

 sides, the first of them the deepest, the anterior two-thirds very 

 strongly longitudinally costate, the costfe sometimes transversely 

 connected and separated at the sides by deep elongate fovete, the 

 apical third portion flavous, finely punctured, with an arrangement of 

 rows here and there. Below bluish-black, the last two abdominal 

 segments flavous ; legs elongate and slender, flavous, the tarsi black 



Hah. Owgarra, New Guinea (A. S. Meek). 



Quite distinct from A. Meeki in the much more pronounced 

 and longer elytral costse and their foveolate interstices, in the 

 differently sculptured thorax, and the general coloration. 



Pal^osastra, gen. nov. 

 Elongate, subcylindrical, and robust, the head short and broad, 

 antennre very long and slender, extending to the apex of the elytra, 

 the basal joint elongate, club-shaped, the second small, the third more 

 than twice as long, the others very elongate, slightly curved, the apes 

 of each produced. Thorax short and transverse, twice as broad as 

 long, the sides nearly straight, posterior margin oblique near the 

 angles, the disc with a lateral and basal depression. Scutellum broad. 

 Elytra wider at the base than the thorax, broad and elongate, slightly 

 widened posteriorly, closely punctured, their epiplearffi narrow and 

 gradually disappearing below the middle. Legs long and slender, the 

 tibiag not sulcata, all armed with a long spine, the metatarsus of the 

 posterior legs longer than the following joints together, claws appen- 

 diculate : prosternum invisible between the highly-raised coxas, the 

 anterior cotyloid cavities open. 



This genus has most of the structural characters of the 



