1010 ON A COLLECTIOX FROM NORFOLK ISLAND — INSECTA. 



prove to be distinct from Pentarthrum, but as they go very well 

 into that genus in its wider sense I have not thought it necessary 

 to separate them at present. In the absence of the allied genera 

 for comparison, it is scarcely advisable to add to the already too 

 numerous divisions of the Cossonidaj. 



CERAMBYCID.^. 



TOXEUTES RASILIS, sp.n. 



Elongate, depressed, brown, somewhat shining ; mandibles very 

 prominent ; prothorax with two short acute spines on each side ; 

 the elytra finely, sparingly and irregularly punctured. 



Head longitudinally impressed in the middle, strongly and 

 rather sparingly punctured on the disc, rugose near and behind 

 the eyes ; mandibles very prominent, incurved, closely punc- 

 tured. Antennse about two thirds the length of the body, 

 scape extending just beyond the posterior margin of the eye. 

 Prothorax broadly transverse, somewhat depressed and rather 

 strongly punctured in the middle, the disc on each side 

 with a large, shining, obscurely punctured space, beyond 

 this rather strongly rugose ; the sides with two short acute 

 spines, the first straight, the other either straight or (in large 

 specimens) slightly curved. Scutellnm rounded behind, obscurely 

 punctured at the base. Elytra with the ridges indistinct, finely, 

 sparingly, and irregularly punctured ; the sides somewhat rounded ; 

 the sutural angle pi-oduced behind into a short spine. Underside 

 with the abdominal segments devoid of pubescence, shining, 

 extremely finely and sparingly punctui'ed. Legs finely punctured. 

 Length 28-37 mm. 



As far as can be judged from the description this species appears 

 to agree with Toxeutes punctatissimus, Thomson, in the absence of 

 rugosity at the base of the elytra and in having the thoracic spines 

 short and not strongly recurved ; it diff'ers, however, in its finely 

 and sparingly punctured elytra, ifec. From T. arcuatus, Fabr., 

 which I have seen froin Albany, West Australia, as well as from 

 Tasmania, it is also distinguished by its less parallel-sided elytra,, 

 and smooth abdominal segments. 



