286 



Head with dense and small asperate granules ; with a 

 short longitudinal hairy elevation inwards of each eye ; ocular 

 canthi acute at outer apex ; clypeal elevation with a distinct 

 subcorneal elevation on each side and a slightly larger one in 

 middle, immediately behind the middle one two slightly 

 smaller ones; middle area of clypeus with its dividing line 

 distinct in middle, but obliterated towards sides; mandibles 

 very prominent, each deeply and conspicuously notched at 

 about one-third from apex. Prothora.x with sides strongly 

 rounded and very feebly serrated ; surface irregularly granu- 

 late and punctate ; at about basal third with an obtuse 

 carina parallel with hind margin, but terminated before the 

 irregular sublateral foveae, behind it (except in middle) a 

 shallow depression ; in front of carina a depression bounded 

 in front by a feeble ridge, tipped by two small tubercles not 

 quite touching each other, between tubercles and apex a 

 fairly large excavation. Elytra stria te-punctate, both punc- 

 tures and striae more or less obliterated posteriorly. Front 

 tibiae, with six teeth, hind tibiae bicarinate. Length, 23 mm. 



Hah. — Western Australia: Perth (F. H. clu Boulay). 

 Type (unique) in National Museum. 



This and the two following species belong to the second 

 subgroup of Blackburn's second group, a subgroup whose 

 species have females quite as distinctive as their males, but 

 (apart from dissection) I am unaware as to how the sex of a 

 unique specimen may be determined, and I do not know the 

 sex or sexes of these species. The five tubercles (three of 

 which are close together) between the antennae and the short 

 hairy ridges near the eyes readily distinguish the present 

 species from any other known to me. The tubercles on the- 

 pronotum are smaller than those on the head, the medio- 

 frontal excavation is slightly larger than an antennal club, 

 its middle is longitudinally impressed, and the impression 

 can be traced backwards between the small tubercles to near 

 the subbasal carina : there are no round, sharply-defined 

 punctures on the prothorax, the surface being mostly 

 asperate-granulate and in places almost vermiculate. 



BOLBOCERAS DACODERUM, 11. Sp. 



PI. xxxiii., fig. 51. 



Castaneous, some projecting parts black. In place* 

 densely pilose. 



Head rather widely flattened and with small punctures 

 between eyes ; clypeal elevation with three rather small sub- 

 conical elevations of even height, but the middle one some- 

 what larger than the others; middle area of clypeus appearing 

 as an almost vertical rugose front face : mandibles strongly- 



