COLEOPTERA 205 



(40) Proterhinus vestittis Sharp. 



Protej-hinus vestitus Sharp, Tr. Ent. Soc. London, 1878, p. 16. Tr. Dubhn Soc. 

 III. 1885, PI. V. fig. n^-] and 38. 



Typical examples of this species have a very distinctive appearance, ov^^ing to the 

 extremely sudden constriction of the thorax in front. I have only seen one rather 

 small example v^^hich quite resembles the types in structure, but specimens from the 

 Waianae range have the thorax in some cases hardly less abrupdy constricted, and must 

 be referred to the same species, although they form a well-marked local variety 

 {^P. vcstitns, var. heterostictiis). These examples also have the setae of the elytra and 

 legs generally less elongate, and the black or dark markings of the elytra are more 

 lateral in position. The species is closely allied to P. eulcpis but the elytra are in 

 general less wide and short, the shoulders less produced, and the erect setae longer. 



Hab. Oahu, mountains near Honolulu (Blackburn) ; Waianae mountains, both 

 sides. 



(41) Proterhinus robiistus Blackb. 



Proterhimis robusttis Blackburn, Tr. Dublin Soc. iii. 1885, p. 171. 



Extremely close to P. vestitus but probably distinct. Like that species it is 

 variable, but in its typical form it differs from typical examples of P. vestitus, in having 

 the thorax but little constricted in front and less narrowed behind, the hind angles 

 distinctly marked by a spot of pale squamosity. The elytra have shorter and less 

 conspicuous erect setae, those on the legs being also much shorter. The basal joint of 

 the antennae is unusually long, being fully as long as the two following joints together. 

 Apart from the pale spots at the hind angles the thorax has very little squamosity, so 

 that the puncturation is quite conspicuous, being very dense, and somewhat coarse. 

 The curved setae at the sides are short and very feebly developed. I have not seen 

 a ^ of this species. Length 2 — 3 mm. 



Hab. Oahu, Waianae mountains, found in the lowest forest. Only a few female 

 examples were collected. 



(42) Proterhinus sicbplanatus, sp. no v. 



Nigricans, parum dense squamosus, P. anguiai'i cognatissimus, antennis plerumque 

 brevioribus, minus gracilibus, forma magis depressa (sive deplanata), distinguendus. 

 ^ $. Long. 2 — 2 '5 mm. 



A somewhat obscure species, evidently closely allied to P. angularis. From 



27 — 2 



