COLEOPTERA 



451 



The genus has an analogy with Apctiniis, but is not alHed thereto ; the larger and 

 more coarsely faceted eyes, the much more largely developed tarsi, and the pronounced 

 facies of Gonioryctus show that it is allied thereto and not to the Eupetinus group of 



genera. 



(i) Nesapterus nioiticola. Sharp. 



Gonioryctus nwnticola Sharp, Tr. ent. Soc. London, 1878, p. 130. 



Plate XIV. fig. 4, t. 



The peculiar dense and rough sculpture of the elytra make this species very 

 remarkable. It appears to be excessively rare. 



The unique example found by Mr Perkins is a female, and does not quite conform 

 to Mr Blackburn's description of the female characters, I.e. p. 131 ; the tuberculation 

 of the pygidium being e.xtremely obscure, as is also the terminal margin alluded to 

 by him. 



H.A.B. Oahu. Near the summit of the highest peak (Blackburn); end of Koolau 

 range, vi. 1900 (no. 789, Perkins). 



(2) Nesapterus cxilis, sp. nov. 



Haud latus, subdepressus, fereopacus, et pubescentiae destitutus; elytris subsulcatis, 

 sulcis fortiter punctatis. $ Long. corp. <^\ mm., lat. vix ultra 2 mm., long, prothoracis 

 1 1", lat. prothoracis i|-, long, elytr. 2 mm. 



Closely allied to G. viotiticola, but readily distinguished by the sculpture of the 

 elytra, which are vaguely grooved, and have comparatively large punctures in the 

 grooves ; they are also a little longer than the elytra of nionticola. We have only one 

 specimen. It is a female and has the pygidium obtusely pointed in the middle of the 

 hind margin, and projecting a good deal beyond the last ventral plate. 



Hab. Lanai, behind Koele, 11. 1894 (no. 87, Perkins). 



EuNiTiDULA, gen. nov. 



Generis Goniorycti affinis. 



Prosternum posterius protuberans. 



Corpus subpolitum. 



This insect is distinguished from Gonioryctus by characters that are of importance 

 in other groups of Nitidulidae. The prosternum instead of being curved upwards 

 immediately behind the front coxae, is prolonged backwards so as to form a clumsy 

 prosternal process ; and concomitantly with this the base of the pronotum reposes to a 

 larger extent on the elytra, so that the humeral angles of these are in repose con- 

 siderably in front of the base of the thorax. 



