125 



apex are whitish ; two of the basal joints of antennae are 

 ■decidedly flavous, the three following ones gradually become 

 darker, the others are black ; the knees and tips of tibiae are 

 obscurely flavous. The pale inter-antennary elevation is 

 somewhat heart-shaped, and gently concave, from behind it- 

 appears a feebly trituberculate process, from the side a curved 

 ridge. In my table would be placed with H. concavice / ps> 

 which is a smaller and broader species, with head differently 

 •coloured and excavated. 



Helcogaster ventralis, n. sp. 



<3 . Black; prothorax, each side of three basal segments 

 «of abdomen, and three basal joints of antennae flavous; knees 

 and parts of tibiae and tarsi obscurely diluted with red. 

 With rather sparse, blackish hairs. 



Head moderately large; with minute, irregularly distri- 

 buted punctures, becoming crowded at base; a small shallow 

 ■depression each side in front. Antennae rather short. 

 Prothorax distinctly transverse; subbasal depression shallow 

 and ill-defined. Elytra rather short; with minute, rugulose 

 punctures. Basal joint of front tarsi moderately large, lop- 

 sided, and with a black inner comb. Length, 3 mm. 



Hab. — South Australia: Mount Lofty (A. H, Elston). 

 Type (unique), I. 11910. 



Structurally fairly close to H. basicollis, but frontal 

 fovea of head much less distinct, antennae somewhat shorter, 

 and prothorax uniformly pale. In my table it would be 

 placed with H. pulchri'pes, from which it differs in its darker 

 head, with somewhat different frontal impressions, darker 

 antennae, and abdomen partly pale. The head has a dis- 

 tinctly feminine appearance, but the front tarsi are certainly 

 those of a male. 



Helcogaster apicicornis, n. sp. 



S . Black; prothorax, most of front and of middle legs, 

 hind knees, and part of antennae flavous. With sparse, dark 

 hairs. 



Head highly polished, with two small but distinct foveae 

 in front, a few minute punctures about base. Antennae 

 rather short, second to fourth joints slightly transverse, fifth 

 "to tenth rather strongly transverse, eleventh flat, almost as 

 long as eighth to tenth combined. Prothorax distinctly 

 transverse, sides evenly rounded, base and apex equal, a 

 vague depression near base. Elytra, moderately long ; with 

 fairly dense and minute, rugulose punctures. Middle femora 

 distinctly dentate, middle tibiae rather strongly curved at 

 base, basal joint of front tarsi large, lopsided, with a black 



