686 NEW SPECIES OP AUSTRALIAN COLEOPTEEA, 



distributed along the south-western coastal regions ; I have 

 specimens fully as large as those described by Hope, and others 

 very much smaller. //. contractus I have from Pinjarrah; it is 

 intermediate between Sympetes tricostellus and »S'. Macleayi. H. 

 testiidineus (from Port Essington) appears to be very close to my 

 Syinpetes undulatus; Hope figures the anterior tibiae as having a 

 free apical spur longer than the 1st tarsal joint; in und^datus 

 there is a slight triangular extension (considerably shorter than 

 the 1st tarsal joint) of the tibia itself, but no free spur. 



H. marginellus appears to be remarkably close to Saragus 

 rudis, MacL, and the dimensions given by Macleay are identical; 

 there are, however, a number of species rather closely allied. 



On Plate vi., fig. 6, Hope figures a true but headless Helceus to 

 which I can find no reference whatever; I think I have the 

 species (from Swan River) which is close to but distinctly larger 

 than my grcmulatus. It is certainly hot referred to in Volume 

 v., nor can I find any mention of it in the succeeding volumes. 



MiTUA BiDWELLi, Hope (W. S. Macleay, MSS.) (Trans. Ent. 

 Soc. Vol. V. p. 56, PI. vii. fig. 6). — This species does not appear 

 in the Catalogue. Hope does not give an exact locality, which 

 may account for its omission, but the title of his paper is 

 " Descriptions of several new Species of IIelceid(B from Australia." 

 Judging by the illustration the species appears to belong either to 

 Styrus or to Nyctozoilus. 



Pterohel^eus tristis. Lea. — In affixing this name (P.L.S.N.S.W, 

 1896, p. 285 j I overlooked the fact that Sir Wm. Macleay had 

 already referred Saragus tristis, Germar, to Pterohelceus. As a 

 substitute I propose the name teriuistriatus. 



Hel^us ellipticus, n.sp. 



Oblong-elliptic, softly shining, almost impunctate, uniformly 

 piceous-black, upper surface glabrous. 



tJead punctate, a distinct longitudinal impression between eyes. 

 Antennse extending to intermediate coxae. Prothorax transverse 

 (ll|x8 mm.); margins wide, strongly reflexed, posterior half 

 thickened and slightly curved, anterior angles scarcely obtuse, 



