COLEOPTERA 205 



the sides of which slant so that, looked at in some directions, the striae seem broad and 

 the interstices narrow, whereas in other light the reverse relations appear to exist. The 

 thorax is short, very strongly narrowed behind, the side margin strongly elevated behind, 

 the base punctate, deeply impressed near each hind angle. The abdomen longitudinally 

 impressed at the base in the middle. About 30 specimens. The species apparently 

 varies but little. 



Hab. Kauai (Perkins): Makaweli, 2000 — 2500ft., in January and February, 

 Mts. Waimea and Halemanu, 4000 ft.. May. 



(10) Diseiioc/tus fracfus, sp. nov. 



Niger, nitidus, elytris viridi- vel aeneo-micantibus, antennis palpisque rufis, pedibus 

 piceo-rufis ; thorace ad basin et angulos posteriores subtiliter rugoso-punctato ; elytris 

 oblongo-ovatis, profunde punctato-striatis, striis hie inde plus minusve interruptis. 

 Long. 10 mm. 



Var. a. Paulo latior et robustior, supra aeneo-micans, thorace latiore, basin versus 

 fortiter angustato, elytris magis ovatis. 



A rather elongate and slender insect. Thorax a good deal narrower than the 

 elytra, much rounded at the sides, and distinctly narrower at the basal than at the front 

 angles ; a large depression at the obtuse posterior angles, these depressions rugose- 

 punctate, the surface a little in front of them and between them also rather indistinctly 

 punctate. The elytra are deeply sculptured in a rather peculiar fashion, appearing in 

 some cases to possess series of punctures two or three or more of which are joined to 

 form portions of a stria, in other cases the striae are less interrupted : the outer striae or 

 series of punctures are always strongly marked, and the impressions on the eighth stria 

 are always large, even if vague. About 50 specimens. 



The species varies in the direction of the variety diagnosed above, a good many 

 specimens partaking more or less of the characters alluded to ; one or two specimens 

 approximate to Aiwlionyinus agonoides, and can scarcely be distinguished therefrom 

 except by the presence of the thoracic seta, and a slightly deeper, more interrupted 

 striation of the elytra. 



Hab. Maui (Perkins): Haleakala, most of the specimens in Oct. 1896, 4000 — 

 5000 ft. (Nos. 661, 6S0) ; a few specimens were also met with in April and May 

 (Nos. 250, 597, 618, 620, 622). 



Specimens of Laboulbeniaceae were taken from this species by Prof. Thaxter as 

 No. 1222. 



(11) Discnochus loigipes, sp. nov. 



Elongatus, angustus, nigro-piceus, antennis palpis pedibusque sordide rufis ; haud 

 nitidus ; prothorace ad basin et angulos posteriores rugoso-punctato ; elytris oblongo- 

 ovatis, profunde punctato-striatis. Long. 10 mm. 



