300 



considerably wider. The si3ecies may, however, be known from 

 all its described congeners by its bright testaceous-red antenna?. 

 S. Australia. 



ERIRIIIXIXI. 



This tribe of C'>ircnlionid(c is represented in Australia by a 

 very great number of genera and species. Its metrojDolis appears 

 to be the southern and western portions of the continent ; very 

 few species have been found in the North and North-East. The 

 Australian ErirJiinini present extreme difficulty in classification 

 on account of the existence of species in which the distinctive 

 characters of the tribe gradually disappear, so that it is impossible 

 to characterise the tribe in terms that will distinguish it sharply 

 from all the allied tribes. Thus, Mr. Pascoe described several 

 genera as ErirJiiiiini^ in which the pectoral canal of the Crypto- 

 rJiynchini is present in a modified form, and which he subse- 

 quently thought ought to be transferred to the latter tribe : the 

 genus Eniopea of the same author is characterised as having a 

 true exposed iiyyidium^ which would place it very far away from 

 the tribe as M. Lacordaire characterised it, and Orichora (now 

 j)laced among the Tychiini) was originally characterised by the 

 same author as an Erirliinid. I have lately been studying a fairly 

 large number of species of this and allied tribes, and have endeav- 

 oured to bring them into something like order. 



The Erirhinini belong (in M. Lacordaire's classification) to 

 Section B. of Phalanx I., in the aggregate of Curculionidce 

 which is called " Curculionides Phaiierognathes Synmerides," 

 and which is distinguished by the following characters : — Mentum 

 not concealing the mouth organs, front coxa? contiguous, pygidium 

 not visible, claws simple (i.e., not dentate, appendiculate, or bifid), 

 metasternum not very short, its episterna not very narrow. 

 From the rest of the Curcidionidfe possessing the above charac- 

 ters M. Lacordaire distinguishes the Erirhinhii by the following 

 characters in combination ; antennae geniculate, mesothoracic 

 epimera not visible from alx>ve, submentum furnished with a 

 peduncle, pronotum not distinct from the flanks of the pro- 

 sternum, mandibles not (or scarcely) pronjinent, third joint of the 

 tarsi not enormously dilated with the form of a palette, rostrum 

 more or less elongate and slender and not of abnormal shape, 

 tibia? not of the strongly compressed form they take in the 

 Hylohiini, corbels of the hind tibia; open. 



I think all species agreeing with the above diagnosis ought to 

 be accounted Erirhinini, irrespective of the question whether 

 their facies may happen to resemble that of another tribe, and 

 that none making default of any of the characters mentioned 

 above ought to be admitted. Consequently I am of opinion that 

 Mr. Pascoe's second thoughts were not the best in removing 



