212 FAUNA HAWAIIENSIS 



(56) Proierhhms vicimis, sp. nov. 



Species parva, angustula, rufescens, capita, necnon saepe pronoto plus minusve 

 infuscatis, elytrorum marginibus lateralibus, et nonnunquam maculis quibusdam dorsali- 

 bus, niericantibus. Antennarum $ articulus basalis robustus, sed minus brevis, hoc 

 cum sequentibus rufo, articulis apicalibus nigris, clava distincte 3-articulata. Pronotum 

 baud latum, antice impressum, aequaliter (vix dense) squamis vestitum. Elytra angusta, 

 lateribus saepe fere parallelis, pallide, baud maculatim, squamosa, setisque brevibus 

 albidis erectis parce inconspicueque vestita, angulis humeralibus baud productis. Oculi 

 et tarsorum anticorum lobi parvi. $ ?. Long, vix 2 — 2-25 mm. 



The affinities of this insect are with five of the Kauai species, P. serricor7iis and 

 the four following, rather than with any other of the Oahuan forms. With those species 

 it agrees in general form, colour, and clothing, as also in the very short rostral portion 

 of the head in the t, and, considering its minute size, in the rather strongly developed 

 basal joint of the antennae. It cannot however be referred to any of those species, for 

 the antennae, which are neither long nor yet particularly slender, and of which neither 

 the 3-jointed club, nor the intermediate joints present any special features, will agree 

 with none of them. The sexes apparently are almost similar, except for the usual 

 sexual differences. 



Hab. Oahu. Taken only in the Waianae mountains, and not numerously. 



(57) Proterhinus pusillus Sharp. 



Proterhinus pjisillus Sharp, Tr. Ent. Soc. London, 1879, p. 97. 



This is a very minute and obscure insect, and may not improbably prove to be a 

 depauperated form of some other species. It belongs to the most difficult and obscure 

 section of the genus, and has no striking characters of any sort. It appears to approach 

 closely to some varieties of P. deceptor, and also to minute examples of P. obscurus. 



Hab. Oahu mountains near Honolulu, 1500 — 2000 ft. (Blackburn.) 



C. Species insulae Maui propriae. 



(58) Proterhinus validus Sharp. 



Proterhinus validus Sharp, Tr. Ent. Soc. London, 1881, p. 531. 

 (Plate IX. fig. 16. i.) 



The antennae in this species are decidedly more elongate and less thick in some 

 examples than in others. The length varies from 4 — 6 mm. 



Hab. Maui, Haleakala (4000 — 5000 ft.) ; many examples taken on Acacia koa. 



