182 



a small subcorneal tubercle ; mandibles not notched near apex. 

 Prothorax with four strong processes projecting forwards, and 

 almost equi-distant at their tips, front margin with a narrow 

 impression across middle, becoming foveate at each side, 

 front angles acutely produced; with a large deep fovea close 

 to each submedian horn ; with a few large punctures about 

 middle, becoming crowded towards and on sides ; basal gutter 

 with punctures throughout. Scut ell um impunctate. Elytra 

 with small punctures in striae, of these the thirteenth and 

 fourteenth very close together near base. Front tibiae with 

 six teeth, hind pair with two wide carinae. Length, 

 20-21 mm. 



Hab. — Queensland: Chillagoe (J. S. Clark). Type, 

 I. 10659. 



The apex of the prothorax is bifoveate, the foveae, 

 however, lateral, but as the hind tibiae are not multicarinate 

 Blackburn no doubt would have referred it to the first sub- 

 group of group two, and it would there be associated with 

 frog gat ti and armigerum , from the description of the former 

 it differs in being smaller, and with the median processes of 

 the pronotum closer together than in tenar, instead of more 

 distant; from armigerum it differs in having the lateral 

 processes of the head much shorter and the median horn much 

 longer, the discal foveae of the prothorax are also considerably 

 larger, but the horns are somewhat the same ; with the heads 

 removed specimens of the two species would probably be 

 thought to belong to but one species; tenax, also with four 

 transversely placed horns, has them more widely separated, 

 the foveae smaller and deeper, and the cephalic horn bifid. 

 The cephalic horn is about as long as the distance across the 

 canthi ; the prothoracic horns are somewhat compressed 

 laterally, and rather obtusely pointed, the median ones are 

 shorter than the one on the head, and somewhat longer than 

 the lateral ones; in addition to the large punctures on the 

 prothorax there are numerous minute indistinct ones. A 

 second specimen is considerably darker than the type ; its 

 head and prothorax being dark brown. 



BOLBOCERAS BISPINICOLLE, n. Sp. 

 PI. xxv., figs. 18 and 19; pi. xxvi., figs. 45 and 46. 

 $ ■ Pale castaneous, tips of some projections black. 

 Under-parts densely pilose. 



Head gently concave in middle, with two feeble sub- 

 nodular elevations near base, in front with two strong spines 

 projecting forwards and upwards, a narrow carina connecting 

 the spines, and another connecting each with the canthus : 

 mandibles gently incurved near apex, the right one notched. 





