COLEOPTERA ' 185 



A. Species insulae Kauai propriae. 



(i) Proterliiniis gigas, sp. nov. 



Robustus, pallida squamosus, nigricans, antennis, pedibus elytrisque saepe plus 

 minusve rufescentibus. Oculi magni, fortiter prominentes. Antennae graciliores, 

 articulis elongatis, tertio quam secundus bis longiore. Pronotum inaequale, 3-impressum, 

 rugoso-punctatum, antice constrictum, pallide squamosum, margine antico lateribusque 

 setis curvatis vestitis. Elytra lata, squamis pallidis necnon setis erectis, sat conspicuis, 

 vestita, basi juxta scutellum utrinque tuberculata, humeris fortiter productis. Pedes 

 setis erectis conspicue vestiti. Abdominis segmentum primum ventrale circa medium 

 obsoletissime, latera versus et ad basim fortiter punctatum. $ %. Long. 4 — 5 '5 mm. 

 (Plate IX. fig. I, $.) 



This large species can hardly be confused with any other, although it varies 

 considerably in size and in other respects. The 8th joint of the antennae is sometimes 

 a little longer, sometimes a little shorter than the 9th, and generally they are subequal. 

 In a few examples out of a long series the 8th is considerably the shorter of the two, as 

 is usual in most species of the genus. The surface of the elytra, except for the 

 depression formed between the shoulders and the tubercle on either side of the 

 scutellum, is nearly evenly convex. 



Hab. Kauai (4000 ft.). Under bark of Cheirodendron only. 



(2) Proterhinus crassicoTiiis, sp. nov. 



Forma, facie, et magnitudine fere praecedentis, sed antennis brevioribus, articulis 

 multo crassioribus, abdominis segmento 1° ventrali circa medium fortiter et distincte 

 punctato, bene distinctus. $. 



Hab. Kauai mountains (2000—3000 ft.). Only two examples were taken, owing 

 to the erroneous supposition that they were identical with those of the preceding 

 species, which is found on the high plateau of the same island. 



(3) Proterhinus antJu-acias, sp. nov. 



Niger, vel piceo-niger, latus, antennis pedibusque saepe rufescentibus. Oculi 

 magni, prominentes. Antennae graciliores, scapo brevi, articulo secundo tertioque una 

 conjunctis multo breviore, clava gracili. Pronotum antice fortiter et abrupte constrictum 

 (vel nonnunquam tantum angustatum), anteriusque profunda foveatum, angulis posterio- 

 ribus macula pallida squamosa sat conspicue signatis. Elytra lata, maculatim squamosa, 



