BY ARTHUK M. LEA. 69 



shoulders are feebly diluted with red. In appearance the species 

 is moderately close to cylindricus, but is larger, the prothorax 

 entirely black, the shoulders without epaulettes and more of 

 the abdomen black. S. cyliyuh'icus is said to be a variable species, 

 but of the (four) specimens that I possess the largest is consider- 

 ably smaller than the smallest of the (nineteen) specimens that 

 I have of the above species; moreover, I have never seen a speci- 

 men of cyllndricus having the prothorax entirely dark. Sir Wm. 

 Macleay says of it : — *' This species seems to vary a good deal in 

 colouring. The thorax and abdomen have brown marks in one 

 of the specimens before me which are not to be traced in the 

 other."' In my own specimens the brown markings on the pro- 

 thorax consist of a patch on each margin sometimes dilated 

 towards the middle but never encroaching on the base or apex; 

 on the elytra the pale basal markings in three specimens consist 

 of rather large epaulettes, in the other the base is entirely pale, 

 as in the type. 



The head and prothorax in this and the two following species 

 (as they are also in (/uttula, cylindricus, and cpqualis) are closely 

 covered with comparatively large shallow punctures of even depth, 

 each being supplied with a small central pit. These segments, in 

 fact, appear to be closely reticulated or honeycomb-like in con- 

 sequence of the walls of the larger punctures being perfectly 

 uniform in height and disposition. I do not remember having 

 seen similar punctures in any other genus of Coleoptera. 



SUNIUS TRILINEATUS, n.sp. 



Long and thin. Upper surface shining, the head and protho- 

 rax much less than the elytra and abdomen. Black; apex of 

 each of the four basal segments of abdomen and all the appen- 

 dages flavous; elytra flavous, the suture and a stripe on each side 

 black with a bluish gloss, extreme margins infuscate. Clothed 

 with short yellowish pubescence, the sides with sparse and long 

 blackish hairs. Length J:^, to apex of elytra 2 J mm. 



Hab. — Clarence River, N.S.W. 



