BY T. G. SLOANE. 425 



of intermediate spinulose beneath, of posterior very rarely with a 

 single spinule ; onychium glabrous beneath. 



This group consists of one species, 30, N. angustibasis SI., which 

 is so distinct from all other described species, that I have felt com- 

 pelled to constitute a group for its reception. It is variable in 

 colour and facies, and is found in the coastal districts, from the 

 Hunter to the Burnett River. I note the following varieties : — 



A. Wider than type-form; prothorax much wider (5 "5 x 5 -4 

 mm.); Black. Length, 9, 21 mm. Hab., Tambourine Mountain. 

 Given to me by Mr. R. Illidge.* 



B. Smaller than type-form; prothorax narrower (4 x 3*5 mm.); 

 elytra obscure purple-black. Length, 16mm. Hab., Bathurst. 

 Given to me by Mr. F. H. Taylor. 



The atrodermis-growp. 



Black. Head large. Prothorax subcordate; posterior marginal 

 puncture in lateral channel near basal angle. Elytra with humeral 

 angles marked, basal border slightly raised above lateral border at 

 point of junction; third interstice with four setigerous pores; 

 eighth narrower than ninth. Intercoxal declivity of prosternum 

 flat; of mesosternum hardly concave. Tarsi with upper surface 

 not striolate; four posterior tarsi with first joint costate exter- 

 nally, costa not spinulose beneath; onychium glabrous beneath. 



31. N. atrodermis SI., (1903) [ = N. rufipalpis SI., (not Castel- 

 nau), 1902] is a species that is equally out of place in the spkod- 

 roides- or the australis-group according to the system of classi- 

 fication herein adopted. It is found in Victoria, I believe, in the 

 Healesville and Marys ville Districts. Length, 15 mm. 



The opacicollis-grouip. 

 Prothorax with disc either nitid, or opaque and strigulose; pos- 

 terior marginal puncture near basal angle, but not on border. 

 Elytra fully striate; basal border prominent at humeral angles; 

 third interstice bipunctate. Intercoxal declivity of prosternum 



* It is possible that N. sulnridescens Chaud., may be conspecific with 

 var.A. ; this is a subject that requires investigation. 



