39 



distinct from the suture 'in which the upper plane of the 

 labrum meets the more or less perpendicular front face of 

 the clypeus. 



In all the species of this subgroup the hind femora are 

 confusedly punctulate between the two series of punctures. 



The vestiture of the body beneath consists of the some- 

 what thinly-scattered pilosity that is found on the majority 

 of Iltteronyces, and it would appear needless repetition when 

 it is of ordinary character to record its presence in the sep- 

 arate descriptions of species. 



The basal piece of the claws of the hind tarsi in all the 

 members of this subgroup shows a decided tendency at the 

 inner apex to spiniform prolongation which in two species 

 {holosericeus, Macl., and Coatesi, Blackb.) is sufficiently pro- 

 nounced to suggest a possible doubt whether the claws ought 

 not to be considered bifid. 



It is not improbable that II. ■pilosellus, Blanch., apper- 

 tains to this group, but in the absence of information re- 

 garding the claw structure of that insect its place can only 

 be conjectured. If its claws are appendiculate it is quite 

 possibly identical with one of those described in the follow- 

 ing pages, but the description is too vague, in any case, for 

 confident identification. 



Tabulation of the distinctive characters of Ileteronyces 

 of Group IV. (Subgroup I.): — . 



A. Upper plane of labrum separated 

 from lower plane by a defined ridge 

 or sulcus. 

 B. Form very short and wide; width 

 of elytra notably more than f of 

 their length. 

 C. Elytra punctured very conspicu- 

 ously less closely than pronotum jponderosus, BJackh. 

 CC. Elytra punctured not less closely 



than pronotum spissus, Blackh. 



BB. Form normal; width of elytra not 

 more than f of their length. 



C. Apex of elytra normal piceus, Blanch. 



CC. Apex of elytra bearing a line of 

 conspicuous granules which emit 



strong bristles horridus, Blackh. 



AA. Upper and lower planes of labrum 

 meet roundly. 

 B. Apex of elytra with a row of gran- 

 ules bearing stiff bristles sexualis, Blackh. 



BB. Apex of elytra normal 



C. Puncturation of elytra confluent ... holosericeus, Macl. 

 CC. Puncturation of elytra notably 



less close Coatesi, Blackh. 



H. jJonderosus, sp. nov. Robustus, sat late subovatus ; sat 

 nitidus ; ferrugineus ; supra pilis adpressis perbrevibus 

 sat sparsim vestitus ; clypeo fronteque crebre nee grosse 



