314 



POLYPHRADES COLLARIS, n. Sp. 



(S . Black. Densely clothed with muddy-grey or brownish- 

 grey scales, becoming paler, and sometimes with a metallic 

 lustre on muzzle, under-surface, and legs. In addition with 

 .short dense setae, more distinct on elytra than elsewhere. 



Head with dense, partially concealed punctures. Rostrum* 

 short, with a conspicuous transverse impression at base. 

 Antennae stout, scape almost as long as funicle, first joint of 

 funicle scarcely as long as second and third combined. Pro- 

 thorax twice as wide as long, sides increasing, with a somewhat 

 sinuous outline, from apex to base; with small dense granules, 

 somewhat transversely arranged. Elytra at base much 

 narrower than base of prothorax, sides at base feebly 

 notched, and then widely rounded; with rows of fairly large, 

 subquadrate, partially concealed punctures; interstices flat or 

 gently convex. Legs stout, four front tibiae denticulate. 

 Length (d, 9)' 5-6 J mm. 



9 . Differs in having the prothorax w T ith the basal half 

 almost parallel-sided, and the base itself abruptly truncate. 



Hah. — Northern Territory: Batchelor (G. F. Hill's 

 No. 299), Darwin (N. Davies). Type, I. 3332. 



The prothorax is remarkable. On fhe male the sides are 

 gently rounded from about the apex to the basal third, where 

 they are slightly but noticeably dilated to the base, the base 

 itself being considerably wider than the base of the elytra, 

 and quite as wide as the widest portion of same. On the 

 female the sides are evenly rounded and gently increase in 

 width to the extreme base, which is considerably wider than 

 the base of the elytra, although slightly narrower than the 

 widest part of same. On the males of paganus, nanus, and 

 ■of several other species the middle of the prothorax is con- 

 siderably wider than the base of the elytra, but towards the 

 base it decreases in width. On the present species the sides 

 are not at all diminished towards the base, and in consequence 

 the numerous specimens sent by Mr. Hill all appear to be 

 •compounded of two specimens; the head and prothorax of 

 one, attached to the body of a smaller specimen. 



POLYPHRADES BASIROSTRIS, n. Sp. 



<$ . Black. Densely clothed with muddy-grey or rusty- 

 grey scales, becoming paler on muzzle, under-surface, and 

 legs. In addition with short, dense setae; more distinct on 

 elytra than elsewhere. 



Head wide, almost flat between eyes; with dense, con- 

 cealed punctures. Eyes rounder and more convex than usual. 

 Hostrum short, with a conspicuous transverse impression at 



