BY THOMAS G. SLOANE. 191 



The supra-antennal plates are behind the wings of the clypeus 

 and project beyond them; when longitudinally sulcate before the 

 eyes the part outside this preocular sulcus may be called the 

 preocular process. 



The sulorhital channels are below the eyes; they receive the 

 basal part of the antennae when laid back. 



ScARAPHiTES GiGAS, Castelnau. 



I formerly regarded Sc. gig as, Cast., as in all probability a 

 synonym of So. laticollis, Macl.; but Mr. C. French has in his 

 collection a species from N.W. Australia which is evidently Sc. 

 gigas, and which, though closely allied to Sc. laticollis, differs 

 from that species by the following characters : — Form proportion- 

 ately broader and heavier; head similar, but with mentum less 

 concave in front of submentum; prothorax broader (9x18 mm.), 

 more deeply emarginate in front, anterior angles similar but more 

 prominent, sides sloping more decidedly backwards to posterior 

 angles, these less marked; elytra broader (22 x 18 mm.), less 

 parallel, evidently wider behind middle, more convex, more 

 abruptly declivous to apex, sides more strongly rounded, lateral 

 margins wider. 



Length 44, breadth 18 mm. 



EURYSCAPHUS WATERHOUSEI, Macl. 



E. waterhousei, Macl., seems to have a very wide range and 

 varies greatly in size, so much so, indeed, that it is probable E. 

 aftratus, SL, may prove to have been founded on a small form of 

 E. waterhousei. 



Length 35-50, breadth 15-24 mm. (from specimens in my pos- 

 session.) 



Hah. — MacDonnell Ranges (Spencer); Barrow Creek, Northern 

 Territory of South Australia (Coll. French); Lake Darlott (Mur- 

 chison Goldfield District), West Australia (Coll. Froggatt). 



EuRYSCAPHUs EBENiNus, Sloane. 



This species is widely distributed in West Australia, and varies 

 gTeatly [in size and appearance. Like the eastern species E. 



