115 



result, from above, the black basal portion of the elytra 

 appears to be widely triangular. 



Helcogaster brevicornis, n. sp. 



$ . Black ; head in front of eyes, front sides of 

 prothorax, elytra (a slight infuscation about scutellum), 

 antennae, front legs, and knees, more or less flavous. A few 

 dark hairs scattered about. 



Head rather small, a wide, feeble, median elevation in 

 front, a shallow depression on each side of it, and a more 

 feeble one behind its middle; a few minute scattered 

 punctures, but becoming dense behind eyes. Antennae short, 

 scarcely reaching base of prothorax, all the joints, except 

 first and eleventh, transverse. Prothorax moderately trans- 

 verse, sides gently rounded, subbasal depression very feeble 

 and ill-defined; a few small punctures scattered about, but 

 becoming more condensed on sides. Elytra scarcely twice the 

 length of prothorax ; with a few small, rugulose punctures .. 

 Basal joint of front tarsi large, lopsided, and with a distinct, 

 black, inner comb. Length, 3'5 mm. 



Hah. — Western Australia: Coolgardie (Blackburn's 

 collection, from E. Meyrick). Type (unique), I. 11916. 



The shallow depressions on the head are as on many 

 females of the genus, and the head itself is rather small for 

 a male, but the front tarsi are unmistakably masculine. On 

 the type the base of the head is exposed and opaque, but it 

 would probably be concealed on most specimens. 



Helcogaster flavipennis, n. sp. 



d" . Black ; labrum, elytra (a slight infuscation about 

 scutellum), front legs and parts of the others more or less 

 flavous. A few blackish hairs scattered about. 



Head rather wide, a feeble trisinuate impression 

 between eyes, a feeble and short median line; a few small 

 punctures scattered about. Antennae thin and not very 

 long. Prothorax moderately transverse, sides evenly rounded, 

 subbasal depression almost absent; almost impunctate. 

 Elytra rather short, dilated posteriorly; with sparse and 

 minute, rugulose punctures. Basal joint of front tarsi large, 

 lopsided, a distinct black comb from base to apex. Lenoth 

 (c*, 9), 2-3 mm. 



9 . Differs in having the head smaller, median line less 

 distinct, a shallow depression each side in front, antennae 

 shorter, prothorax more transverse, and front tarsi combless. 



Hob. — South Australia: Quorn (Blackburn's collection 

 and A. H. Elston), Oodnadatta (Blackburn). Type, I. 11898. 



In my table would be associated with H. marginicollis. 



