COLEOPTERA i8i 



(4) Hypothcncimis sylvicola, sp. nov. 



Minus elongatus, cylindricus, pallide testaceus, capite et pronoto plus minusve 

 infuscatis. Pronotum subtilissime granulato-sculpturatum, parte anteriore asperata, 

 opacum, parce pubescens. Elytra pallida, setis pallidis vestita, subtilissime vix evi- 

 denter punctata, baud evidenter striata. Long, i '5 mm. 



In colour this species must greatly resemble H. griseus Blk., but that species has 

 the elytra deeply striate. In some examples the asperities of the prothorax are but few, 

 in others they are much closer and more numerous, and I suspect that the difference is 

 sexual. The sculpture otherwise is excessively feeble and consists of a very dense 

 and excessively minute granulation or puncturation, not definitely distinguishable even 

 with a very strong lens. The clothing of the elytra consists of short pale setae, which 

 in certain aspects appear to have a linear arrangement, and also of some longer fine 

 hairs, which are particularly noticeable at the sides about the apex. 



Hab. Lanai, 2000 ft. several examples. — Kauai, 4000 ft., one example taken. 

 The latter has the thorax entirely pale and concolorous with the elytra. 



(5) Hypothenemus insularis, sp. nov. 



Cylindricus, angustulus, sat elongatus, niger, antennarum basi pedibusque rufo- 

 testaceis. Pronotum anterius fortiter asperulum et parce setosum, posterius opacum, 

 subtilissime granulatum (an punctulatum ?). Elytra setis brevibus griseis conspicue 

 vestita, sat elongata (circa bis longiora quam basi latiora), evidenter punctata. Long. 

 I — I "4 mm. 



Allied to H. ruficeps, but very different in superficial appearance, owing to its 

 entirely black colour. The punctures on the elytra are not so very fine, but they are 

 ill-defined. Apparently they are more or less serially arranged, but not in the definite 

 manner seen in the last species, in fact the puncturation appears somewhat rugose. 



Hab. Kauai. Two examples were taken at Makaweli, above 2000 ft. 



(6) Hypothenemus ritjiceps, sp. nov. 



Cylindricus, sat elongatus, capite et pronoto rufescentibus, elytris nigris. Pronotum 

 anterius sat fortiter asperulum, postice opacum et parum distincte sculpturatum, parce 

 pubescens. Elytra nitida, setis brevibus griseis sat conspicue (postice saltem) vestita, 

 subobsolete striata, striis subgrosse punctatis. Long, i "5 mm. 



Distinct by the red head and prothorax, and black elytra. The punctures on the 

 latter are somewhat coarse but not very definite, and are placed in subobsolete striae. 

 The short whitish setae are dense and conspicuous on the posterior portion of the 

 elytra, less so in front, but they have been partly abraded on this part. 



Hab. Oahu ; Kaala, Waianae range (2000 ft.) ; one example taken. 



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