268 FAUNA HAWAIIENSIS 



The half-dozen examples of this species show no noteworthy variation in colour, 

 but some have the puncturation of the thorax less fine, and the punctures at the base of 

 the elytra more numerous and coarser. I suspect these differences are for the most 

 part sexual. Very short pale and inconspicuous setae can be detected in fresh 

 examples. 



Hab. Hawaii (4000 ft.). 



(7) Apterocis ru/o-noiaiiis, sp. nov. 



Niger, nitidus, prothorace nonnunquam rufo-piceo, elytrorum apice rufescente, 

 humerisque maculis rufis, saepe in fasciam transversam conjunctis, signatis. Pronotum 

 fortiter minus sparsim punctatum. Elytra basim versus grosse remote punctata. 

 Mesosternum dense sculpturatum, parte antica vix obliqua. Abdominis segmenta 

 ventralia dense subtiliter punctata. Van elytris nigris, baud rufo-notatis. Long. 

 I "5 — 2 mm. 



Found in company with A. hazvaiiensis, but distinguished by the general form, 

 the prothorax and elytra not forming together such an even and continuous curve. 

 The mesosternum in front of the coxae is so little oblique that it nearly continues 

 the plane of the metasternum. Some examples have the thorax decidedly more 

 finely and remotely punctured than others, the variation being analogous with that 

 exhibited in the same parts of A. hawaiiensis. 



Hab. Hawaii (4000 ft.). Six examples taken. — Molokai (4500 ft.). One 

 mutilated example taken, apparently identical with those from Hawaii. 



(8) Apterocis impunctattis, sp. nov. 



Nigricans vel nigro-piceus, antennis pedibusque rufo-testaceis. Pronotum im- 

 punctatum, nitidum, postice distincte marginatum. Elytra nitida, impunctata, corpore 

 subtus impunctato. Long, i — 1"5 mm. 



In many respects very like A. ephistemoides but readily distinguished by its form, 

 the outline of the thorax and elytra not forming the very even curve that is seen 

 in that species. Posteriorly the prothorax is finely but very distinctly margined. 



Hab. Oahu, Waianae mountains. — Kauai, Makaweli (2500 ft.) one very minute 

 individual. 



(9) Apterocis variegates, sp. nov. 



Niger, sat elongatus, ovalis, glaber, elytris testaceis, nigro-variegatis, pronoti 

 margine antico maculaque basali, antennarumque articulis basalibus, testaceis. Pronotum 

 densissime grosseque rugoso-punctatum, subimpressum et subinaequale, postice vix 



