594 



suture at the top of the declivity forwards to stria 7 a little in front 

 of the middle, and a few other scattered whitish and blackish scales; 

 the prosternuni with separated broad pale brown scales interspersed with 

 narrow ones ; the rest of the lower surface very thinly clothed with small 

 setiform scales, each arising from a puncture. 



Send with the forehead narrowing from the base of the rostrum to 

 the top of the eyes, without any median fovea. Eostrum rather flat- 

 tened dorso-ventrally, strongly narrowed from the base to the antennae 

 and thence almost parallel-sided ; the apical two-thirds bare, shiny and 

 Avith sparse minute punctures; rather coarsely punctate at the base with 

 a few pale scales. Antennae with the two basal joints of the funicle 

 equal, the remainder transverse and becoming successively wider. Prothorax 

 about twice as broad as long, parallel-sided for a short distance from 

 the base, then rapidly narrowing to the well-marked apical constriction; 

 the basal margin truncate, except for a small rounded projection in front 

 of the scutellum; the dorsal apical margin strongly rounded; the dorsum 

 even, the large close pimctures mostly hidden by the scales, which are 

 much larger than those on the elytra. Scutellum punctiform, bare, 

 glabrous. Elytra not broader at the shoulders than at the base of the 

 prothorax, the sides gently rounded, the base truncate and submarginate, 

 the apices jointly and obtusely rounded ; the shallow striae with large 

 separated punctures that are not covered by the scaling, but become 

 much smaller behind; striae 8, 9 and 10 (abbreviated) much deeper than 

 the others ; the dorsal intervals broad and even, each bearing a row of 

 small recumbent scale-like setae that are not easily discernible; the dorsal 

 outline not continuous with that of tiie thorax, but rising rather rapidly 

 to about one-third from the liase and sloping more gently to the apex. 

 Legs without any angular tooth on the femora. Sternum with the meta- 

 sternum between the mid and hind coxae as long as the mid coxa. Length, 

 3.2 mm.; breadth, 1.8 mm. 



Habitat. — Upolu Island: One female. Tafua A'olcano, 1917 

 (Dr. H. Szuale). 



Type in the British Museum. 



Closely allied to 0. solca Pascoe (Jl. Linn. Soc. Lond., XI, 

 195. 1873), from Batchian, which, however, has two white spots 

 on the front margin of the pronotum and two white spots on 

 each elytron ; the prothorax begins to narrow immediately from 

 the base, is mtich more produced in front and is coarsely and 

 reticulately punctate ; the femora bear a very small angular 

 tooth ; the metasternum between the coxae is shorter than the 

 mid coxa. etc. 



