230 Mr. Arthur M. Lea's Revision of the 



legs) the excavation of the head of male with a suddenly 

 elevated tubercle in its middle ; and its median posterior 

 sinus very wide, and the lateral ones indistinct ; seen from 

 both behind and the sides also it appears very different. 

 The head is nearer to that of fiiscitarsis than any here 

 recorded, but is not the same, and with the elytra, is 

 ditferently coloured ; the prothorax also is decidedly longer. 

 Seen from behind the head appears concave in the middle, 

 but on raising the point of view the median tubercle 

 (which is flat-topped) appears, at a slightly higher eleva- 

 tion a small tubercle appears on each ridge of it ; these 

 being really the tips of the frontal tubercle, which from in 

 front is seen to be of semilunar shape. 



Helcogaster foveicornis, n. sp. {Figs. 78, 79.) 



$. Reddish -flavous ; basal half of upper surface of head, meta- 

 sternum, parts of antennae, of tarsi, and of four hind tibiae, more or 

 less infuscate ; elytra and abdomen deep black. 



Head wider than usual ; very indistinctly punctate ; moderately 

 convex, with a feeble longitudinal impression in middle and a feeble 

 one on each side of apex. Antennae long, 1st joint (except at base) 

 very stout, its outer apex foveate, 2nd much smaller than 1st, very 

 narrow at base and then suddenly inflated on one side, 3rd and 4th 

 comparatively stout, the others gradually decreasing in width. Pro- 

 thomx as long as the width at apex, apex considerably wider than 

 base ; with a strong basal impression. Elytra impunctate. Basal 

 joint of front tarsi about half their total length, with the inner 

 margin strongly rounded and black rimmed. 



Length to apex of elytra 2, of abdomen 3 mm. 



Hah. N. S. Wales : National Park (A. M. Lea). 



Readily distinguished from all the species here recorded 

 by the basal joints of antennae, which in appearance much 

 resemble those of the males of certain species of Laius. 

 There are four males before me, of these one has the 

 apical half of the antennae almost black, in another the 

 apical third is moderately infuscate, whilst in the two 

 others the apical joints are but little darker than the others. 

 In two of the specimens the basal joint has a dark spot. 

 The scutellum is pale, an unusual feature in a species 

 having the elytra entirely dark. 



Helcogaster insularis, n. sp. 



(J . Deep black, elytra with a slight bluish or greenish gloss ; 



