December, 1877] 14^5 



mucli less pronounced, front rather strons^ly emarginate ; elytra (with 

 sides much more rounded) uniformly and more strongly striated ; the 

 interstices are somewhat convex, and the -Ith joint of the four front 

 tarsi are rather strongly (of the hind tarsi only slightly) emarginate. 



To render my descriptions as clear as possible, I insert the fore- 

 going comparison of A. muscicola with a common European species, 

 and exercise the greatest care in the following descriptions to express 

 each character in terms that will prove correct when compared with 

 those used in describing muscicola. 



A. EPICUEUS, sp. nov. 



Piceo-niger ; prothoracis elytrorumque margine reflexo {raro superiore etiain) 

 ferrugineo ; antennis testaceis,panim iiifuscatls; palpis pedibusque testaceis ; capite 

 vix elongato ; prothorace vix subcordato, antice minus fortiter emarginato, postice 

 utrinque foveolato {in A. muscicola, prothoracis fovea basalis margine repando mersa 

 est) , margine laterali minus repando, angulis posticis obtusiuscidis ; elytris antice 

 latioribus, minus fortiter striatis, striis externis minus profundis, humeris minus pro- 

 ductis ; ccetera ut in A. muscicola. Long. 9 — ^\ mm. 



Oahu Mountains. Very local, and not common. 



A. PROTEKvrs, sp. nov. 



Piceus ; elytrorum apice (plus mimtsve) marginibusque, palpis et pedibus testa- 

 ceis ; antennis testaceis plus minu.ive infuscatis ; prothorace ru/o-piceo, margine 

 reflexo testaceo ; capite partun elongato ; oc ul is minus convexis ; antennis corporis 

 dimidio parum longioribus ; prothorace ut in A. epicuro (at paulo brevior, angulis 

 posticis minus obtusi-s) ; elytris fere ovalibus, ante apicem fortius sinuatis, convexis, 

 fortiter striatis, interstitiis convexis, humeris fortius productis ; tarsorum articulo 

 quarto parum emarginato. Long. 6l — "71 mm. 



Widely distributed, but not common- 

 A. SCKUPULOSUS, sp. nov. 



Subnitidus, brunneo-piceus ; prothoracis rufescentis marginibus, elytrorum 

 marginibus, sutura, apiceque, rufls vel testaceis; antennis, palpis, pedib usque flavo- 

 testaceis ; capite parum elongato ; oculis magnis convexis ; antennis corporis dimidio 

 multo longioribus ; prothorace fortius transversa {nee subcordato) , antice emarginato^ 

 postice utrinque foveolato, canaliculato , lateribus sat rotundatis, angulis posticis fere 

 rotundatis ; elytris oralibus, parum convexis, subtililer striatis, interstitiis latis, 

 egregie planis, humeris sat productis ; tarsis ut in A. muscicola. Long. 8 — 8 J mm. 



Oahu Mountains. Taken by mo only once. 



A. FRATERNUS, Sp. nOV. 



A. scrupuloso affmis, plerumque paulo obscurior ; prothorace obsolete {sat evi- 

 denter autemj subcordato ; elytris convexiusculis, antice latioribus, paulo fortius 

 striatis, interstitiis (postice preesertim) minus planis. Long. 7f — 8 mm. 



Oahu Mountains. Neither local nor common. 



