40 F. E. Wilson: 



rows of punctures, becoming almost obsolete on apical declivity; 

 interstices with a few minute punctures. 



Length. — 3 mm. 



Habitat. — Queensland: Goodna (F. E. Wilson). 



This species apparently comes closest to O. variabilis, Lea,^ 

 but differs from the description of that species in the sculpture of 

 the head, shape of prothorax and markings. A pair of these 

 rather handsome little Chrysomelids were secured from beneath 

 the bark of a rotting log. 



Type in author's collection. 



ClIALCOLAMPRA PARVULA, n. Sp. 



Broadly ovate, very convex; head, sides of prothorax, base of 

 elytra and suture broadly, sides of elytra narrowly, reddish- 

 brown, the rest black, and the whole nitid. First four joints of 

 antennae testaceous, the rest darker; legs flavous. Upper surface 

 (with the exception of a few setae on front margin of clypeus) 

 glabrous. Under surface brownish-red. 



Head sparsely and rather indistinctly punctured, with a shal- 

 low depression just above each eye, clypeal suture broadly 

 V-shaped, reaching back a little beyond the points of •insertion 

 •of antennae; about midway on each arm of the suture is a deep 

 'Circular depression, between which and the eye the cephalic sur- 

 face is somewhat raised ; eyes very coarsely granulate ; antennae 

 with joint 1 very stout, 2 thicker than 3, 3 nearly twice as long 

 as 4. Prothorax strongly depressed, about three times as broad 

 as long, sides narrowly margined and rounded, but slightly in- 

 curved towards middle, anterior angles a little produced, pos- 

 terior rounded ; with fairly large, though sparsely distributed, 

 punctures, becoming less frequent at sides. Scutellum sub- 

 triangular, smooth, impunctuate. Elytra very convex, continuous 

 with sides of prothorax, widest about midway, with nine rows 

 of well defined punctures on each elytron, seventh and eighth 

 row starting from a common puncture somewhat distant from the 

 base of elytron, ninth row obsolete at about one-third ; interstices 

 with sparse smaller punctures. 



Under surface with a depression on disc of metasternum, meso- 

 sternum and metasternum with sparse setigerous punctures, ab- 

 dominal segments with scattered setigerous punctures and suf- 



2. Trans. Rcy. Soc, S.Aust., vol. xl., pp. 431, 



