510 NEW SPECIES OF AUSTRALIAN COLEOPTERA, 



Swan River, Mount Barker, Albany and Karridale). The type 

 specimen (judging by the description) appears to have been some- 

 what discoloured, as in nearly all the specimens under examina- 

 tion the pale testaceous markings (which are exactly as described 

 and are not at all or very slightly variable) are sharply defined. 

 Specimens vary in length from i to 1 line. 



Serangium microscopicum, n.sp. 



Briefly ovate, moderately convex, highly polished. Black; 

 mouth-parts, antennae and legs flavous. Head and prothorax 

 with a few, the elytra with still fewer straggling whitish hairs. 



Upper surface not visibl}', the under surface finely punctate. 

 Length 1 mm. 



HaL—Behn River, N.W.A. (Mr. R. Helms). 



Like bicolor, but at once distinguished by its much smaller size 

 and pallid legs. 



Serangium nigrum, n.sp. 



Briefly ovate, strongl}^ convex, moderately polished. Black; 

 tarsi testaceous or ferruginous, apical half of posterior tibiae 

 testaceous or not. Upper surface clothed with long, straggling, 

 yellowish-white pubescence, rather denser on prothorax than on 

 elytra; under surface (middle of metasternum glabrous) with fine 

 yellowish pubescence. 



Elytra with very fine punctures; under surface (except at sides 

 of abdomen) indistinctly punctate. Length 2 mm. 



Rab. — Hobart, Tasm. 



The entirely black (except for tarsi and occasionally part of 

 tibise) colour should render this species easily recognised; from 

 bicolor it differs (besides colour) in being larger, with longer and 

 more regular pubescence and with punctate elytra; the punctures, 

 though small, are traceable with a Coddington lens. From above 

 (except that it is less densely clothed) it strongly resembles 

 Erithioyiyoo lanosus in miniature. 



Serangium punctipenne, n.sp. 



Briefly ovate, strongly convex, highly polished. Black; mouth- 

 parts, antennae and tarsi obscure testaceous. Head and prothorax 



