53 



its value for purposes of tabulation is diminished. Of the 

 four species which I have grouped together on this character 

 in the j^resent group, three of them have the front of the 

 frons not only decidedly perpendicular but strongly so (i-e., 

 the height of the perpendicular face considerable, about 

 equal to the thickness of a palpus), but in (rqualis the face 

 of the frons though undoubtedly perpendicular is of very 

 little height and not very conspicuous. If the frontal char- 

 acter were disregarded icquaJis would stand in the tabulation 

 beside dehilicoll/s, Blackb., which has a perfectly normal frons 

 and also differs from ceqiuilis by, infer alia, its prothorax 

 more narrowed in front and its elytra evidently more strongly 

 punctulate. I do not think any species which I have tabu- 

 lated as not presenting the frontal peculiarity of severus, 

 etc., could possibly be regarded as presenting it unless pos- 

 sibly terrenus, Blackb. (in which there is a suspicion of the 

 frontal character), but it is easily distinguishable from nearly 

 all others of this subgroup by belonging to the small aggre- 

 gate, having the pronotum conspicuously asperate or granu- 

 late. 



//. aetifer, Blackb. The extraordinary length of the 

 basal joint of the hind tarsi in both sexes of this species is, 

 so far as I know, unique in TleferoQiycr. The male is smaller 

 than the female, and has longer tarsi (especially the inter- 

 mediate pair). The basal piece of the hind claws is distinctly 

 produced at its inner apex, but the projection is very much 

 smaller than the apical piece. This species occurs in Western 

 Australia as well as near Adelaide, but seems to be a rare 

 insect. The apical part of the elytra is abruptly and some- 

 what widely depressed, almost as in H. occidentalis, Blackb. 



77. insif/nis, Blackb. Attention should be given to a 

 note on this species in Tr. R.S., S.A., 1908, pp. 383, 384. 



//. (leceptor, Blackb. In my former revision of Ileter- 

 onii-r I drew attention to the curious superficial resemblance 

 between this species and B. torvus, Blackb., to which it is 

 not at all closely allied structuirally. .In respect of structure 

 its closest ally is "p^thescens, Er., from which it differs in 

 numerous superficial characters not lending themselves to 

 tabulation, e.fj., its nearly black elytra and dark piceous an- 

 tennse, its less nitid appearance, the notably finer and closer 

 rugulosity of its pronotum. Its claws furnish, however, a 

 definite character by which it can be at once distinguished, 

 those of its hind tarsi having their basal piece not in the 

 least produced at the apex, while the corresponding piece in 

 yiiTx'xrens terminates in a perfectly distinct small spine-like 

 projection on the inner side. 



