204 FAUNA HAWAIIENSIS 



longitudinaliter rugosum, ad basim distinctissime angustatum. ^ ?. Long. 2"6 — 

 275 mm. 



Species, ut opinor, P. difficili (sp. Kauaiensi) cognatlssima, sed forma angustiore. 



Very similar to some examples of P. difficilis of Kauai, but distinguished by the 

 evidently narrower elytra, which in lateral view are less convex longitudinally. The 

 humeral angles are a good deal produced, but are not sharp, and are closely applied to 

 the base of the prothorax, the puncturation is strong and dense. This species also 

 bears a strong resemblance to the following i^P. platygonias), but the deep thoracic 

 impressions, the extremely coarsely punctured elytra, and the strong constriction of 

 the head behind the eyes, in the latter species, will easily distinguish it. 



Hab. Oahu, Waianae mountains (3000 ft.) ; two examples (^ and $) taken. 



(39) Proterhimis platygonias, sp. nov. 



Nigropiceus, pallide squamosus, elytris plus minusve rufescentibus et nigro- 

 maculatis. Caput post oculos fortiter constrictum. Pronotum profunde 3-impressum, 

 minus dense squamosum, grossius rugoso punctatum. Elytra inaequalia, grosse punc- 

 tata, utrinque juxta scutellum tuberculata, humeris fortiter, nee acute, productis. 

 %. Long. 2-5 — vix 3 mm. (Plate IX. fig. 12, $.) 



Black, the elytra reddish with black markings posteriorly, antennae red at the base 

 or nearly altogether black. Head constricted behind the eyes, so that a ridge is formed 

 between the vertex and front. Antennae not stout, nor long, the basal of the three 

 terminal joints not very different to the 8th, the two terminal ones much wider, and 

 short. Thorax very uneven owing to the three extremely deep depressions, its 

 puncturation dense and rugose. Elytra with pale squamosity, and some rather short 

 white erect setae, the surface uneven, the ridges which extend back from the humeral 

 angles being evident at the base, and sometimes distinct to nearly the apex. On either 

 side near the scutellum is a rather strong tubercle, covered with white squamosity, and 

 between these and the shoulders the elytra are deeply impressed, as is readily seen in a 

 lateral view. The humeral angles are strongly produced, but not very sharp, and 

 closely applied to the base of the thorax. The puncturation is extremely coarse. 

 Lobes of the front tarsi unusually small. 



Hab. Oahu, Waianae mountains (3000 ft.). Two female e.xamples taken in 

 February, 1896. In one the antennae and tarsal lobes are black or nearly so, in the 

 other (excepting the apical joints of the former) both are red. The latter example 

 has the longitudinal ridges of the elytra less distinct, and the eyes decidedly less 

 prominent. 



