38o FAUNA HAWAIIENSIS 



with black ; this dark infusion is greater in E. tincius, so. that the thorax above is 

 black with reddish angles. On the under surface, either the black or the red colour 

 predominates on several parts, but this is no doubt variable. From E. imiticus, which 

 it superficially somewhat resembles, it is distinguished by the strong denticulation of the 

 prosternal process. It is smaller and more slender than E. konae and E. cognatus. 



H.AB. Hawaii, Olaa, xi. 1896 (Perkins). » 



(28) Eopentlies ambiguus Blackburn. 



Eopenthes ambigtms Blackburn, Tr. Dublin Soc. iii. 1885, p. 155. 



Angustus, sordide testaceus, prothorace disco late nigricante, crebre sat fortiter 

 punctato : elytris sat profunde striatis, plus minusve infuscatis. Long. 7 — 8 mm. 



The small series of examples — 14 in number — before me indicate a variable insect, 

 with elongate antennae in the male, and slender feet without dilated joints ; the thorax 

 is subparallel at the sides, the hind angles being comparatively little turned outwards. 



Hab. Oahu (Perkins) ; Palolo valley, 2000 ft. (Blackburn). 



(29) Eopenthes nnUicus, sp. no v. 



^. Angustus, haud convexus, nigricans, elytris testaceis, circa scutellum, sutura 

 apiceque nigricantibus, antennarum basi pedibusque sordide testaceis. Long. 7^, 

 lat. if mm. 



Plate XIIL fig. 6. 



An obscurely, or indefinitely coloured insect, of slender form, with elongate 

 antennae and legs, distinguished from its allies by these characters, and by the fact that 

 the prosternal process is more than usually abruptly bent upwards behind the coxae, 

 and has no tubercle on it (Plate XIII. fig. 9). The angles of the thorax are strongly 

 divergent, the punctuation rather coarse. The elytra are rather deeply striate ; at the 

 tips they are slightly sinuate, and though not really denticulate, end in a very acute 

 angle. There does not appear to be any dilatation of the tarsal joints, the fourth joint 

 is slender and elongate. The eight specimens before me are all males. 



Hab. Kauai, high plateau, viii. 1896 ; 4000 ft. vii. 1896 (Perkins). 



(30) Eopenthes debilis Sharp. 



E. debilis Sharp, Tr. Dublin Soc. iii. 1S85, p. 154. 



Mr Perkins has met with only one individual of this species. It may be readily 

 distinguished from all the varieties of E. anibigmis, by the tarsal structure ; the small 

 fourth joint of the hind tarsus in E. debilis is a striking and distinctive character. 

 The length is 7 mm. 



Hab. Oahu (Perkins) ; Waianae mountains, 2500 ft. (Blackburn). 



