15 



but with different clothing and arrangement of 

 granules, also showing an approach to T. squamosus. 

 I hesitate to describe on a single 9 • 



42. Talaurinus angvlaris, Ferg. — New South Wales: 



Tamworth (Musson). 



43. Talaurinus scapularis, Ferg. — Queensland. 



44. Talaurinus ambiguus, Macl. — No locality. 



45. Talaurinus prypnoides, Ferg. — South Australia: 



Mount Lofty (Tepper). 



46. Talaurinus imitator, Blackb. — Central Australia (co- 



type). 



47. Talaurinus crassiceps, Sloane, type. — Central Aus- 



tralia : Barrow Range. In my table of the genus this 

 species would be associated with T. imitator in Group 

 VI. The two species may be conveniently separated 

 as follows : — 



Group VI. 



d. Intrastrial granules 

 prominent, the de- 

 pressions reduced 

 to transverse fur- 

 rows T. imitator, Blackb. 



dd. Intrastrial ridges not 

 granulate, the de- 

 pressions subquad- 

 rate, foveiform ... T. crassiceps, Sloane 



48. Talaurinus rufipes, Blackb. — Central Australia: 



Tempe Downs, MacDonnell Ranges. 



49. Talaurinus regularis, Sloane \ The types of all these 



50. Talaurinus helmsi, Sloane (species are before me, 



51. Talaurinus aiqualis, Sloane [together with an ex- 



52. Talaurinus solidus, Sloane / tensive series of speci- 



mens from the Elder Expedition collected by Mr. R. 

 Helms. In this connection it might be said that Mr. 

 Sloane in describing these species had only two 

 specimens of each sent to him, and therefore was not 

 in a position to judge correctly of their variation. 

 The species were separated upon differences in con- 

 vexity, in the degree of dilatation of the elytra, in 

 the regularity of the sculpture, and in the granules. 

 In all these points, however, the differences are slight 

 and often elusive, and indeed appear to be incon- 

 stant. After careful examination of a large series I 

 am now of the opinion that all the forms are refer- 

 able to one variable species, though it may be advis- 

 able to recognize some of the names as worthy of 

 subspecific rank. 



