BY A. M. LEA. 491 



the apex of the prothorax are not very large, but they are not 

 small and deep as in Group 1; and since the clypeus and hind 

 tibiae are as in Group 2, it is better referred to the same. Re- 

 garding it as a male, it would, in Blackburn's table, be associated 

 with B. ingens, from the description of whose head it differs very 

 considerably; if regarded as a female, it might be added to Black- 

 burn's table by a line as follows : — 



BBB, Clypeal elevation furnished with two median angular 



projections inconsuetum. 



The front of the clypeus is oblique and not traversed by a 

 carina. 



BoLBOCERAS VARiOLicoLLE, n.sp. (Plate xlviii., fig. 2). 

 (J. Rather dark castaneous. Undersurface densely clothed. 



Head with an obtuse semidouble tubercle between antennae: 

 front of clypeus vertical, the face surmounted by a narrow ridge 

 truncated in its middle, each side with a somewhat curved ridge 

 from behind canthus to in line with median tubercle, then 

 directed towards middle of facial ridge but not joined to same; 

 with dense and rather coarse punctures, but almost impunctate 

 on a narrow space between eyes; canthi moderately concave and 

 with coarse punctures: mandibles evenly rounded. Prothorax 

 with four small subconical tubercles, placed in a somewhat cres- 

 centic form; sides with dense punctures, larger and more irregular 

 about sublateral fovexe than elsewhere, with numerous, round, 

 well-defined punctures irregularly scattered about, but denser on 

 front margin than elsewhere. Scutellum impunctate. Elytra 

 conspicuously striated but without punctures (or, at most, with 

 very feeble ones) in the striae, thirteenth and fourteenth con- 

 joined towards base. Front tihicp with five teeth; hind ones 

 with two transverse carinse, between the subapical one and base 

 a row of small subtriangular tubercles on each side. Length, 

 18 mm. 



Hah. — Queensland: Cunnamulla(H. Hardcastle). 



The clypeus, hind tibiae, and absence of frontal prothoracic 

 foveas are as in Group 2, Subgroup 1 ; of the species referred to 

 that subgroup by Blackburn, it appears closest to B. tenax, but 

 differs strikingly in the size of the cephalic and prothoracic pro- 



