112 



rounded, middle of apex irregular. Elytra dilated from near 

 base, each separately rounded at apex; with fairly numerous 

 and small, but (for the genus) rather distinct, rugulose punc- 

 tures. Legs rather long and thin, basal joint of front tarsi 

 large, lopsided, and with a comb on the inner edge. Length, 

 3'5 mm. 



Rah. — New South Wales: Blue Mountains (Blackburn's 

 collection). Type (unique), I. 11915. 



The prothorax not simple at apex associates this species 

 in my table with H. incisicollis and H. spinicollis; the 

 former has the prothorax black and deeply notched, the latter 

 has the apex spined; on the present species there is a curved 

 impression across the median apex, behind which the surface 

 is elevated, and from some directions appears to project 

 slightly forwards, but it is not spinose; the irregular part is 

 darker than the rest of the prothorax; the general appear- 

 ance and elytra are much as in H. concaviceps. The excav- 

 ation on the head is transverse, and continuous from eye to 

 eye, its hind margin is obtusely trisinuate, and front margin 

 more sharply so, and it has a small tubercle in its middle 

 not elevated above the level of the eyes ; from some directions 

 it appears to have several small tubercles. On the type the 

 front tibiae and tarsi are infuscated, so that the tarsal comb 

 (which on the males of most species show up as a distinct 

 black inner rim) is inconspicuous, but under the microscope 

 it is seen to be composed of about thirty long, close-set teeth. 



Helcogasteb, litoralis, n. sp. 



d . Black; head (except base), most of prothorax, and 

 basal third of antennae reddish-flavous. With sparse, dark 

 hairs, elytra glabrous or almost so. 



Head shallowly impressed on each side in front, towards 

 base with a wide triangular elevation. Antennae moderately 

 long, second to fifth joints slightly transverse, sixth to tenth 

 slightly longer, eleventh longer than tenth. Prothorax 

 slightly longer than wide, widest near apex, with a closed 

 depression near base. Elytra moderately long; with sparse, 

 inconspicuous punctures. Basal joint of front tarsi lopsided, 

 and with an inner comb. Length ( d , $), 2'25-3 mm. 



9 . Differs in having the head black almost to the 

 muzzle, and without the triangular elevation, prothorax 

 almost or entirely black, antennae somewhat thinner, and 

 front tarsi combless. 



Hab.— Lord Howe Island (A. M. Lea). Type, I. 11906. 



In my table would be associated with H. obliquiceps, 

 which has a very different head, in fact the head is very 

 different from that of any other species; seen from behind 



