COLEOPTERA 



191 



angles of the elytra are always sharp and distinct, and in well-developed examples 

 evidently, though not strongly, produced. The lobes of the front tarsi are small. The 

 colour of the insect is typically black, the squamosity of the elytra being placed on paler 

 (piceous or reddish) spots, but in many examples (especially from certain localities), the 

 whole elytra are rufo-piceous or reddish. The species appears to be allied to P. 

 vestitus. 



Hab. Kauai. Common generally (from 2000 — 4000 ft.). Often so covered with 

 a wax-like excretion as to be only recognizable after the most careful cleaning. 



(12) Proterhinus nigricans Sharp. 



Proterhinus nigricans Sharp, Tr. Ent. Soc. London, 1879, p. 95. 



In its typical condition this species is remarkable for the size of the basal joint of 

 the antennae in both sexes, that of the Z being also considerably longer than is usual in 

 the genus. I have not met with any examples that altogether agree with the types, but 

 one Z has the antennae similarly formed, while its eyes are somewhat smaller. Others 

 which have the eyes as in the type have the basal joint of the antennae less developed. 

 The colour of the elytra varies from black to reddish-pitchy with black markings. The 

 squamosity of the thorax is not dense, but the posterior angles are distinctly marked by 

 a small dense spot of pale scales. The species is no doubt distinct, although closely 

 allied to P. amaurodes, collaris, &c., with which it agrees in the strong puncturation of 

 the basal ventral segment of the abdomen. 



Hab. Kauai. On Waialeale, 3000 ft. (Blackburn). Makaweli (2000 — 3000 ft.), 

 and behind Waimea (4000 ft.). Apparently not common. 



(13) Proterhinus binotatus, sp. nov. 



Rufescens, capite thoraceque saepe obscuratis, elytris plaga utrinque magna nigri- 

 cante maculatis. Antennae nigrae articulis basalibus rufescentibus, clava baud abrupte 

 3-articulata. Pronotum ex majore parte parce squamosum, latera versus densius 

 squamoso-maculatum, rugoso-punctatum, antice subimpressum. Elytra, partibus nigri- 

 cantibus exceptis, pallide squamosa, setisque brevissimis, albidis, et erectis vestita, 

 angulis humeralibus parum productis, sed distinctis, et subacutis. Pedes omnes setis 

 brevibus erectis vestiti, lobis tarsorum anticorum magnitudine mediocribus. Abdominis 

 segmentum primum ventrale minus distincte punctatum. t ?• Long. 2-2 — 2"6 mm. 



This obscure species appears to be closely allied to P. simplex Sh. of Oahu, but it 

 is readily distinguished from the well-developed examples of that species. The elytra 



