160 



sissime hirsute ; tibiis anticis externa obtuse 6-dentatis ; 

 clypeo antice cornu porrecto valido minus elongate armato ; 

 scutello sat fortiter sat crebre punctulato ; prothorace in 

 medio profunde longitudinaliter excavato, partis excavatae 

 marginibus cornubus 4 armatis (sc. cornu postico mediano 

 brevi erecto, alio antico mediano brevi erecto, alio utrinque 

 majori intus incurvato). Long., 8 1. ; lat. 4|- 1. 



The sides of the clypeus about half way between the eyes and 

 tlie frontal horn are subtubercularly elevated, and the front ex- 

 ternal angles of the ocular canthi are also prominent. The exca- 

 vation on the prothorax is of a shape that defies exact descrip- 

 tion. It reaches from the horn-like elevation of the front margin 

 hindward about three-quarters the length of the whole segment 

 in the form of an extremely deep canal, which is of somewhat 

 regular form in the lower half of its depth, but above that level 

 it begins to widen out very irregularly, so that in some places it 

 seems to be (on the level of the general surface) nearly twice as 

 wide as in other places ; the hinder part is limited by a well- 

 deiined keel-like ridge — a production of which forms the horn at 

 the middle of the hind margin of the excavation, and which, 

 instead of turning forward to edge the sides of the excavation, 

 runs on transversely to near the lateral margin of the j)rothorax. 

 The hinder end of the excavation is deeply cavernous. The 

 puncturation of the general surface is continued within the exca- 

 vation, where, however, it is less rugulose. The length of the 

 horn on the clypeus is about equal to that of the horn on either 

 side of the prothoracic excavation, and is also about equal to the 

 length of the scutellum from its base to its apex. The surface of 

 the prothorax is uneven even outside the excavation, but there is 

 no indication of the deep fovea near the anterior angles which 

 exists in many species of the genus. The striation of the elytra 

 is very feebly impressed, and some of the striae are obsolete in 

 some part of their length. This species is not very like any 

 other previously described. 



South Australia ; taken by Mrs. Richards near Warrina. 



