142 Mr. Arthur M. Lea's Revision 0/ the 



than 10th. Prothorax twice as wide as long, sides thickened, with 

 the anterior angles obliquely cut off. Elytra densely and moderately 

 coarsely punctate, the punctures in irregular lines, between which 

 are smaller punctures. Penultimate segment of abdomen excised 

 almost to extreme base. 



Length 3 mm. 



5* . Differs in having slightly shorter antennae, and with the 

 penultimate segment of abdomen feebly curved throughout. 



ITah. Tasmania : Launceston, Zeehan (Aug. Simson), 

 Mole Creek, Hobart, Mount Wellington {A. M. Lea)', 

 Victoria : Oakleigh (National Museum). 



This is the only entirely black species known, from the 

 preceding species, to which in colour it approximates, 

 it dififers in being much shorter, prothorax wider and 

 differently shaped ; antennae shorter, etc. In an occa- 

 sional specimen the sides of the prothorax are diluted 

 with flavous. 



Heteromastix flavipennis, n. sp. 



$ . Black J prothorax, elytra, part of mandibles and of coxae 

 flavous. 



Head rather narrower than usual ; densely and not very minutely 

 punctate. Antennae long and thin. Prothorax not twice as wide 

 as long, front angles strongly rounded, hind very feebly produced ; 

 widest at apical third. Elytra densely, rugosely and moderately 

 coarsely punctate ; with numerous irregular feebly raised lines 

 Penultimate segment of ahdomen widely and rather shallowly 

 emarginate. 



Length 5i ( $ 6|) mm. 



5 . Differs in being larger and wider, with narrower head and 

 prothorax, shorter and stouter antennae and simple abdomen. 



Hob. W. Australia : Karridale {A. M. Lea). 



This is the only species known to me in which the head 

 is seen to be distinctly punctate ; it is also the only one 

 (except a species of which I have seen but a female) with 

 the elytra entirely pallid. In the male the 3rd-llth 

 joints are almost exactly the same lengths, the 11th being 

 just perceptibly longer than the 10th ; in the female, 

 however, the 11th joint is distinctly longer than the 10th, 

 although shorter than the corresponding joint of the male. 

 The elytral punctures are frequently confluent. 



