18 Mr. F. Bates on Neic Genera 



apex ; the 9th row of punctures is joined behind (apically) to 

 the 1st, the 8th to the 7th, the 6th to the 3rd, and the 5th to 

 the 4th ; these differences, added to those given in the original 

 description, will readily enable any one to separate the species. 

 My second example is from Wide Bay : it differs from the 

 typical one only in the head having a rounded depression on the 

 crown, the impressions &c. on the prothorax less strongly 

 marked (almost obsolete), the elytra more convex and con- 

 sequently more abruptly declivous behind, the stri^ a little 

 fainter, the punctures larger, and the intervals a little less 

 flat. 



Hypaulax opacula^ n. sp. 



Oblong, or oblong-ovate, sometimes elongate-ovate : black, 

 subopaque. Labium broadly emarginate and densely ciliate in 

 front, the space between the palpi wide and scarcely convex 

 on the disk ; mandibles strongly notched at apex ; mentum 

 strongly transverse, strongly angulate at the sides, front margin 

 notched in the middle, a large round fovea on the disk, and, in 

 six out of the seven examples before me, densely hirsute (in the 

 seventh it is entirely naked) ; gular furrow strong, placed di- 

 stinctly further from the base of the submentum than in the 

 species preceding ; cheek -furrow as in H. tarda, but not exten- 

 ding nearly so close to the gular furrow ; the submentum, and 

 that portion of the gula before the furrow, more convex or 

 bulging than in any of the preceding : head formed as in H. 

 tarda, very minutely and distantly punctulate, the punctures 

 more numerous on the epistoma ; epistomal suture well marked, 

 angulate at the sides ; vertex convex : prothorax opaque, more 

 or less transverse, regularly but not strongly convex, feebly 

 emarginate in front ; base bisinuate, and a little wider than the 

 apex, sides more or less strongly and regularly rounded, and 

 more or less distinctly sinuous in front of the hind angles, 

 which are ordinarily subacute and directed backwards (in some 

 examples they are a little outwardly directed) ; median dorsal 

 line very faintly marked ; the entire surface minutely punctu- 

 late (in some examples almost imperceptibly so), and there are 

 ordinarily several more or less distinct oblong impressions at 

 each side of the disk and nearest to the base ; the lateral edges 

 though thickened are not, except sometimes at the hind angles, 

 at all channelled or lined within this thickened edge or margin, 

 and have not the appearance of a recurved plait or fold having 

 a fine groove or channel within, as is the case with all the other 

 species of the genus ; scutellum convex, almost equilaterally 

 triangular, pointed behind : elytra subovate, a little less opaque 

 than the prothorax, distinctly wider at base than base of pro- 



