114 



shining ridge. Antennae moderately long and feebly serrated. 

 Prothorax slightly transverse, sides evenly rounded, a wide 

 transverse impression at base; a few punctures on sides. 

 Elytra moderately long; with a few small, rugulose punctures. 

 Basal joint of front tarsi lopsided, with a black inner comb. 

 Length (d, 9), 275-3'25 mm. 



9 . Differs in having the head narrower, the median 

 ridge and lateral depressions much less distinct, antennae 

 somewhat shorter and thinner, prothorax more transverse, and 

 front tarsi combless. 



Hab. — South Australia: Quorn (E. L. Savage), Tarcoola 

 and Ooldea (A. M. Lea). Type, I. 12212. 



Colours much as in the preceding species, from which it 

 differs in being slightly wider, head opaque (except in front) 

 and with dense punctures, instead of highly polished, and 

 antennae somewhat shorter. On the only male before me 

 the dark parts of the elytra are a large basal triangle, and 

 the apical two-fifths; on one of the females the dark basal 

 portion is extended, and the apical portion decreased; on the 

 other female the dark parts are both somewhat extended and 

 narrowly meet on the suture. 



Helcogaster cribriceps, n. sp. 



d . Black ; median portion of elytra flavous, four basal 

 joints of antennae, tibiae and tarsi more or less reddish - 

 flavous. With sparse dark hairs. 



Head rather wide; with small and fairly dense, sharply 

 defined punctures, becoming denser in front; a shallow 

 depression on each side in front. Antennae fairly long, 

 moderately stout, and obtusely serrated. Prothorax moder- 

 ately transverse, sides gently rounded and narrower at base 

 than at apex, base with a transverse depression. Elytra not 

 very long, each separately rounded at apex; with fairly 

 numerous small, but rather sharply denned, rugulose 

 punctures. Basal joint of front tarsi with a small black 

 comb. Length, 3 mm. 



Hab. — Western Australia: Cue (H. W. Brown). Type 

 (unique), I. 12121. 



Close to H. medio flavus, and with similarly coloured 

 elytra, but the head simple except for feeble lateral depres- 

 sions and with, for the genus, very distinct punctures; these 

 are sparser than on the preceding species, and are individually 

 distinct, so that the head is shining, on that species they are 

 so dense as to cause the head to be opaque. The pale portion 

 of the elytra occupies rather more than the median third 

 along the suture, it is somewhat extended on each side 

 towards the base, but does not quite touch the sides, as a 



