BY ARTHUR M. LEA. 287 



costa traceable from base to a little beyond the middle. Length 

 20, width 12 mm. 



Hah. — Northam, W.A. (Master Percy Snelling). 



From the description of F. dis2}ar, the above species differs in 

 being larger, its head decidedly broad in front, and the elytial 

 suture slightly raised; my specimen is minus antennae and tarsi. 



Pterohel^us tristis, n.sp. 



Oblong-elliptic, slightly convex, feebly shining. Piceous-black; 

 prothoracic margins, tarsi, antennae and palpi obscure reddish- 

 piceous. Elytra with a few scattered short brownish haii's, 

 scarcely visible to the naked eye; under surface with extremely 

 minute and sparse pubescence. Head densely, minutely and 

 irregularly punctate, and densely and minutely granulate at base; 

 prothorax minutely and not so densely punctate as head, but in 

 addition with extremely dense and almost microscopic punctures; 

 scutellum extremely minutely punctate; elytra striate-punctate 

 (in about eighteen rows), the strife irregular at both base and 

 apex, the punctures obsolete towards apex; under surface of head 

 feebly granulate; prosternum sparsely and obsoletely, metasternum 

 and abdominal segments distinctly punctate, the three basal seg- 

 ments of the latter feebly longitudinally strigose. 



Head subquadrate; clypeus truncate, almost flat, its suture 

 only visible at sides; antennae flattened and widening to apex, 

 reaching intermediate coxae. Prothorax slightly convex, broadly 

 transverse, median line unmarked, deeply emarginate in front, 

 margins moderately broad, base feebly bisinuate, posterior angles 

 acute. Scutellum transversely triangular. Elyti-a convex, 

 parallel-sided to one-third from apex, as wide as prothorax at base, 

 scarcely twice as long as wide, about once and one-half as long as 

 head and prothorax • combined, margins very narrow, feebly 

 reflexed near base. Length 20, width 9 mm. 



Rab. — Mt. Barker, W.A. (obtained under bark of a dead tree). 



This species belongs to the 3rd subsection of Sir Wm. Macleay's 

 second section of the genus; from either P. parallelus or P. cereus 



