226 ON NEW OR LITTLE KNOWN 



rounded. Elytra lather deeply incurved at the sides in the middle, 

 then swelling out before the tip, where they are conjointly rounded ; - 

 there is just before the ivory spots a smooth very shining space, 

 all the remainder covered with closely set minute punctures, this 

 sculpture interrupted hei^e and there by a large puncture, bearing 

 a long soft erect hair. Legs robust, clothed with a few long hairs ; 

 thighs short and very thick, tiliiae rather broad. 



Length 4 — 5 mm. — Habitat: New South Wales. 



The smallest of my two specimens has the head and thorax ot 

 a liglit reddivh-brown colour, but I think this must be ascribed 

 to its being somewhat immature. Its small size , the want of knotty 

 elevations near the base of the elytra and the relative shorter and 

 more robust legs , at once separate this specie^ from 0. coarctaia 

 Pasc, as yet the only known species of this curious genus. 



D R G A D I N I N A E. 

 M esolita inermi s v. d. Poll, n. sp. 



(PI. 13, fig. 8). 



Head, thorax and scutellum black, covered with a delicate 

 silvery pubescence ; antennae rufous. Derm of the elytra brown 

 with a bronze hue, greatly hidden by a dense silvery pile, wdiich 

 is interrupted by the following markings of black hairs, viz: a broad 

 transverse band near the middle, strongly widening towards the 

 outer margins and emitting a broad stripe upwards along the suture 

 (where it stops at some distance from the scutellum) , and a rather 

 indefinite angular marking along the basal margin. TJnderneath 

 black with the bi^east brown, clothed with silvery pubescence, 

 which becomes very scanty on the rather strongly shining abdomen. 

 Legs rutous, darkest in the central part of the thighs. 



Head with a deeply impressed median line; closely and finely 

 punctured; antennae about as long as the body, scape moderately 

 swollen. Prothorax large, the sides rounded, but slightly narrowed 

 in front , much more strongly so towards the base , convex on the 



