492 NEW SPECIES OF AUSTRALIAN COLEOPTERA, xi., 



jectioiis, and in the absence of the four, large, prothoracic fovese. 

 The carina, called the clypeal elevation by Blackburn, is com- 

 pletely free from the ones he called the frontal margins, but this 

 may not be constant. 'J'he tubercles on the prothorax are small, 

 the two median ones are placed almost in a line with the inner 

 edge of the eyes, and are about one-fourth from the apex, the 

 space in front of them is almost vertical, but between them is 

 sloping; the other tubercles are smaller, almost in a line with 

 the front angles, and rather more distant from the apex; the 

 margins are more conspicuously serrated than is usual; there are 

 two small depressions between the sublateral fovea? and the 

 median tubercles, and slightly nearer the latter than the foi-mer. 

 BoLBOCERAS INTERRUPTUM, 11. sp. (Plate xlviii., fig.3). 



Light castaneous. Undersurface densely clothed. 



Head with two, small, isolated tubercles between base of 

 antennae, frontal margin* on each side conspicuously bisinuate 

 and with a small tubercle almost in a line with the others, the 

 apical ridge rather strongly curved, and the two conjoined at 

 the middle of the apex, which is slightly overhanging; canthi 

 rather strongly concave, outer apex conspicuously angulate ; 

 mandibles somewhat sinuous; with dense and rather coarse punc- 

 tures almost throughout. Prothorax with a large median excava- 

 tion having a central pit, with a moderately large marginal fovea 

 behind each eye, a subconical obliquely placed medio-apical 

 tubercle; with a conspicuous, strongly curved ridge, commencing 

 inwards from the sublateral foveas and almost in a line with the 

 front angles, its middle slightly more distant from the base than 

 the length of the scutellum; in front of it a strong ridge on each 

 side abruptly terminated within the excavation; with dense and 

 rather coarse punctures on most of the surface, and mixed with 

 much smaller ones. Sc^Uellum with dense and somewhat irregular 

 punctures. Elytra punctate-striate, thirteenth and fourteenth 

 striae irregularly conjoined near base. Front tibice with six teeth, 

 hind ones with six transverse carinje. Length, 11-14 mm. 



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



* For the explanatioi) of some of the phrases used for the head, see 

 Blackburn, Proc. Linn. Soo. N. 8. Wales, 1904, pp 485-486. 



