COLEOPTERA 66 1 



Proterhimis denudatus Perk. 



P. denudatus Perk., huj. op. ii., p. 203. 



This may prove to be a variety of P. longtilus. It differs cliiefly in the white, not 

 flavescent, erect setae of the elytra and in the darkened apical joints of the antennae, 

 sometimes nearly all the joints are black. This species is e.xtremely variable in size 

 and structure, and it is almost impossible to decide as to its distinctness from P. longulits. 

 It too is a fern feeder, and while not affecting tree-ferns, is found in the thin wiry stems 

 of the so-called stag-horn fern. I have seen a few examples that I cannot certainly 

 assign to either species. 



Hab. Oahu ; common in both ransfes. 



(7) Proterhimis platygonioides, sp. nov. 



P. platygoriiadi persimilis, sed capite post oculos haud fortiter constricto dis- 

 tinguendus. 



Extremely like P. p/atygoiiias, but at once distinguished by the absence of the 

 constriction behind the eyes. The species varies in size and colour. The antennae 

 are sometimes entirely dark, sometimes entirely dull red, sometimes red at the base and 

 black apically. 



Hab. Oahu ; Waianae mountains at 2000 ft. 



Protcrhinus seticollis Perk. 



P. seticollis Perk., huj. op. 11., p. 207. 



I have examined a series of this species, of which none exactly resemble one of the 

 original examples, which is available for examination, but, as they only differ slightly in 

 colour and form, I believe I have assigned them correctly. 



(8) Protcrhinus heterostictus, sp. nov. 



Further study and many additional specimens of the two species show that 

 P. heterostictus considered in Vol. 11., p. 205, as a variety of P. vcstitus Sharp, is quite 

 distinct from that species. The antennae are never of the clear red colour of true 

 vestitus, but are either entirely black, or piceous, or have the basal joints only distinctly 

 or obscurely red. Large examples of the species considered by me as P. simplex are 

 excessively like some specimens of P. heterostictus, but the strong puncturation of the 

 middle of the basal abdominal segment will distinguish the latter. Superficially some 

 specimens are almost exactly like certain varieties of P. adelus, but the less marked 

 club of the antennae will separate them. 



Hab. Oahu ; in the mountains behind Honolulu and elsewhere. The original 

 specimens were from the Waianae mountains, where also I have since seen it. 



F. H. III. 85 



