22 Mr. F. Bates on New Genera 



border ; ordinarily there are two more or less distinct and 

 rounded fovese at each side of the median dorsal line, which is 

 obsolete : scutellum transverse, broadly rounded behind : elytra 

 oblong or oblong-ovate ; base truncated, the thickened basal 

 margin rather nan-ow, not clearly continuous with the sutural 

 interval ; finely but distinctly striated, the punctures in the 

 striae small (especially on the disk), close-set, narrow, oblong ; 

 ordinarily the strise 3 and 4, 5 and 6, and 7 and 8 are united 

 behind in pairs ; sometimes, however, it is 3 and 4, 5 and 8, 

 and 6 and 7 that are united ; the short scutellar row consists 

 of from five to eight small close-set punctures ; intervals flat 

 on the disk, sometimes convex on the sides, indistinctly punctu- 

 late : prosternal process tricarinate ; the middle carina enclosed 

 by the two outer, which are ordinarily transversely coiTugated : 

 legs robust and, together with the underside, shining black ; 

 tarsi, antennge, and palpi dark castaneous. 



Length 8-IO5 lines. 



Hab. Queensland (Rockhampton) and New South Wales. 

 Nine examples. 



At once to be distinguished from all the preceding by the 

 finely punctured strise of its elytra and its more glossy 

 black surface. Like all the other species of which a series 

 of examples has been obtained, the form of the prothorax 

 (especially) and of the elytra is subject to considerable 

 variation. 



Hypaulax ohlonga and H. ovalis^ milii, I. c. p. 263. 



A careful examination of a series of nearly forty examples 

 has convinced me that the specimens (one of ohlonga and two 

 of ovalis) on which 1 fomided these two species are really the 

 extreme forms of but one species. As the form ovalis has 

 been figured {J. c. plate xii. fig. 1) it will be most convenient to 

 take that name for the species : therefore ohlonga = ovalis. 



This species is intensely variable in the form &c. of the 

 prothorax *, especially in the amount of rounding of the sides 

 anteriorly. The elytra also are variable as to form ; they may 

 be subparallel (as in the form ohlonga) or decidedly oval ; and 

 there exists every variety of form between. 



This species may be at once distinguished from all the others 

 by the deeply crenate-striate elytra and convex intervals, and 

 by the labium, which has a deep rounded excision at each side 

 in front, the middle portion between the palpi being prominent 

 and rounded in front, and ordinarily without a tuft of hairs. 



* It was in error that I described the prothorax of ohlonga as longer 

 than wide. 



