1 88 FAUNA HAWAIIENSIS 



and acutely produced, their basal portion is more or less flattened or impressed (not 

 very definitely so as in P. basalts), they have only a few short and inconspicuous erect 

 setae, are rather finely and not very densely punctured, and are evenly convex trans- 

 versely, except at the base. The lobes of the tarsi are of moderate size. The basal 

 abdominal segment is hardly visibly punctured, at least on its middle portion. Examples 

 of this species taken at low elevations (2000ft.), differ from typical ones in all or some 

 of the following characters. The antennae are shorter and thicker, the insect is of 

 narrower form, the elytra have the humeral angles less produced, and are less impressed 

 at the base, while the front tibiae are often extremely short and wide. Some of the 

 abnormal individuals taken with typical examples however possess some of these 

 characters. 



Hab. Kauai. Common above Waimea at an elevation of 4000 ft. The 

 examples most aberrant in one direction come from Halemanu (4000 ft.), in the other 

 from Makaweli (2000 ft.). 



(7) P voter Iiinus difficilis, sp. nov. 



Rufescens vel piceus, sat latus, minus dense pallide squamosus. Antennae graci- 

 liores. Oculi haud fortiter prominentes. Pronotum minus dense squamosum, 3-im- 

 pressum, antice saepe abruptius constrictum. Elytra pallide squamosa, setisque erectis 

 brevibus sed conspicuis vestita, longitudinaliter obscure carinata, humeris productis. 

 Abdominis segmentum primum ventrale circa medium sparsim subobsolete punctatum. 

 $ ?. Long. 2-25— 3-5 mm. 



In form and general appearance very similar to P. diibiosus but a rougher 

 insect. The squamosity is less appressed, the erect setae of the elytra are more 

 numerous, their puncturation is more pronounced, and the surface less even, there being 

 traces of longitudinal ridges extending back from the shoulders. These ridges in fresh 

 examples are rendered more distinct by the squamosity which is somewhat condensed 

 along them. The humeral angles are less strongly produced forwards than in well- 

 developed examples of P. dubiosus. The examination of a series of individuals of both 

 species is necessary for an appreciation of the specific characters, as both vary greatly 

 in size, and in the development of the structural characters which distinguish them. 



Hab. Kauai mountains. Less common than P. dubiosus. 



(8) Pi'oterhinus eulepis, sp. nov. 



Sat latus, nigricans, elytris rufescentibus, nigro-maculatis. Antennae graciles sat 

 elongatae. Pronotum squamis appressis vestitum, angulis posterioribus distinctis, 

 maculaque pallida squamosa signatis. Elytra squamosa, setisque erectis brevioribus 



