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



wide as long, apex ti'uneate, base obscurely bilobed, sides some- 

 what angular, with a rather feeble median, line ; with rather 

 small scattered jjunctures. Elytra long, sides sub-parallel; densely, 

 rather coarsely and almost regularly punctate throughout, sides 

 and apical half of suture thickened. Legs long ; femora simple ; 

 hind tibiae moderately curved. 



Length 5 mm. 



$ . Differs in being larger and considerably wider ; head wider 

 and less convex ; eyes less prominent ; antennae shorter, with the 

 five terminal joints less than half their total length ; prothorax 

 more transverse, the sides more rounded ; elytra with smaller 

 punctures and the legs shorter. 



Hah. Tasmania : Mount Wellington (under bark of 

 Eucalyphis coccifcra close to and on summit, J. J. Walker 

 and A. M. Lea). 



In general appearance this insect does not look much 

 like a Hypattalus, but as its elytra completely cover 

 the abdomen, the body has extrusible vesicles and the 

 antennae are 11-jointed, it could only be referred to that 

 genus or to a new one, and at present the former course 

 seems to be preferable. One of the females has the 

 marginal and sutural thickenings of the elytra pallid 

 as well as the shoulders. Owing partly to irregular 

 contraction and partly to clothing, I am not able to 

 define the sculpture of the apical segments of abdomen 

 of either of the males before me, but they are evidently 

 not distinctly notched. 



Balanophorus. 

 Carphurus. 

 Neocarphurus. 

 Helcogaster. 



In all four of these brachelytrous genera I am not able 

 to find characters in the visible parts of the abdomen to 

 denote sex. There may be such occasionally, but in 

 all the specimens I have examined I have failed to 

 find any; in some cases possibly owing to irregular 

 contraction, but really I think owing to their absence. 

 In many specimens the sheath of the penis, or part of 

 the ovipositor is exposed, but these are so much alike 

 that they are of doubtful use in diagnosing the sex. 

 This being the case other parts have to be relied upon 

 to denote sex. In Helcogaster and Neocaoyhurus the 



