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



fairly well except as to " Ccqnte . . . tenuiter longitudina- 

 liter canaliculatum." 



Hah. N. S. Wales : Sydney. 



Helcogaster impressifrons, Bob., Res. Eugen., 1858, 

 ' p. 83. 



Apparently allied foveiceps, but elytra paler and not 

 uniformly coloured, and only the basal and apical joints of 

 antennae pale. 



JIab. N. S. Wales : Sydney. 



Helcogaster foveiceps, Lea, P. L. S,, N.S.W., 1895, 

 p. 237. 



On a recently taken male of this species there is a 

 narrow infuscate fascia (slightly interrupted at the middle) 

 just behind the middle of the prothorax. 



Eah. N. S. Wales : Sydney. 



Helcogaster gagatinus, Lea., /. c, p. 238. 



Hah. N. S. Wales : Sydney, Galston, Forest Reefs. 



var. OCCIDENTALIS, n. var. 

 A male specimen from Rottnest Island (W. Australia) 

 apparently represents a variety of this species ; it differs 

 from the type in being slightly smaller, with piceous 

 instead of deep black elytra, and with the frontal impressions 

 very feebly defined. 



var. Tasmaniensis, n. var. 

 Another apparent variety occurs in Tasmania ; it has 

 the legs entirely and the antennae almost entirely dark * ; 

 the frontal impressions are rather less pronounced and the 

 size is larger. The only male before me is 4 mm. in 

 length, the females vary from 3 to 4 mm. 



Helcogaster ruficornis, Lea, I. c, p. 239. 



This species is very close to canaliculatus, and I was at 

 one time inclined to think that the two forms belonged to 

 but one species, but after a careful examination of the 



* Tasiiianian specimens of many insects are noticeably larger and 

 darker than their mainland fellows. 



