2IO FAUNA HAWAIIENSIS 



(i) Colpodiscus iiicipetens Blackburn. 



Anchoniemis lucipetens Blackb., Ent. Mo. Mag. xx. p. 217. 



Colpodiscus lucipetens Sharp, Ent. Mo. Mag. xx. 1884, p. 217; Tr. Dublin Soc. 

 n. s. III., pi. IV. fig. 3. 



Plate VI. fig. 16, a and h upper and under surfaces of hind foot. 



A good series has been found of this very distinct species. It varies but little. 

 The four specimens from West Maui found by Brother M. Newell and Mr Perkins 

 have the head rather darker in colour than any of the numerous specimens from 

 Hawaii, though there is some variety in this respect amongst the individuals from 

 the last-named locality. 



A good many of the specimens seem to be infested by Laboulbeniaceae, especially 

 on the under surface. Prof. Thaxter took specimens under the number i 2 1 7. 



Hab. Hawaii (Blackburn, Perkins). — Maui (Perkins, Newell). Olaa, in June and 

 September, Kilauea in August. West Maui, Jao Valley, in September. 



(2) Colpodiscus lahainensis, sp. nov. 



Subdepressus, niger, nitidus, antennis, palpis pedibusque testaceis, prothorace ad 

 latera dilute piceo ; elytris elongatis, striatis, striis nullo modo punctatis. Long. 1 5:^ mm. 



Very different from C. lucipetens by the elongate form, dark colour, and more 

 oblong afterbody. It has more resemblance to Baryneus sharpi, from which it is 

 strongly different on account of the large lobes of the fourth tarsal joint. Thorax not 

 transverse, straight at the base, sides much raised, the intermarginal depression broad, 

 even in front ; without any punctuation. Elytra long, with nine striae bearing no trace 

 of punctures, the inner striae fine but very definite, the seventh stria slighter, obsolete 

 in front. 



Described from two very immature examples, so that the full coloration is somewhat 

 uncertain. But the species is very distinct from any other, and is certainly congeneric 

 with C. lucipetens. 



Hab. Maui (Perkins): West Maui, Jao Valley, August, 1894. 



Prodisenochus, gen. nov. 



Disenochus Sharp, Ent. Mo. Mag. xx. (1884), p. 218; nee Blackburn, op. cit. xv. 

 (1878), p. 121. 



The genus Disenochus was proposed by Blackburn for D. anonialus ; subsequently 

 he added D. terebratus as a second species ; and it was on a specimen of the latter — ■ 

 I having never seen the typical species — that my remarks on the generic characters 

 were based. The two genera are by no means closely allied. Prodisenochus is the only 



