COLEOPTERA 



449 



(21) GoiiioryciHS blackbunti Sharp. 



Goia'oryctus blackbiii-ni Sharp, Tr. ent. Soc. London, 1878, p. 130. 



Very closely allied to G. arduus, but I believe really distinct ; it is of the size of 

 the smallest specimens of that species, but it is more depressed, more densely and finely 

 punctate, and the head is a little narrower and the eyes sliohtly smaller : the pronotum 

 is remarkable for being more nearly flat than in any of the other species. The male 

 has the pygidium narrower at the extremity. I have not seen the female. 



Postscript. Three years after writing the above a few additional specimens of 

 G. blackburni have been shown to me by Mr Perkins ; they were captured on the 

 mountain near Honolulu in 1906 and 1907, some of them are labelled "Tantalus iv. '07." 

 They include one female. The characters of this sex are similar to those of G. arditus 

 $, but the pygidium is rather smaller and less uneven and its angles more indistinct. 



Hab. Oahu. On flowers of trees in mountains (Blackburn); and no. 710 

 (Perkins). 



(22) Goniorycius pusillus, sp. nov. 



Testaceus, plus minus fuscescens, subtilius pubescens, prothorace disco con- 

 vexiusculo, haud impresso, elytris haud sulcatis, subtiliter seriatim punctatis. ^ Long, 

 corp. 4| mm., lat. if, long, prothoracis vix ultra i, lat. prothoracis i-^ ; long, elytr. 2 mm. 



This is only about half the length of G. caknts. and has very little trace of 

 grooves on the elytra, and in the male the pygidium is less acuminate, so that notwith- 

 standing the general resemblance in colour I think the species is distinct from the type 

 form of G. calvus ; it is however possible that a form I have assigned as a var. to 

 G. calvus may be this species, or an intermediate form. The var. ? of G. cahus is 

 known only by the female, and G. pusilliis by a single male. With such inadequate 

 material of difficult and variable species it is not possible to feel convinced. 



The female has the pygidium a little rounded behind, almost as in G. calvus. 



Hab. Lanai, 2000 ft. (no. 80), and above 2000 ft. behind Koele (no. 88, Perkins). 



(23) GoHwrycliis extraneuSy sp. nov. 



Convexus, rufus, extense nigricans, supra aeneo-micans, pubescentia rara et brevi ; 

 elytris obsolete punctatis, subnitidis, nullo modo striatis, vix perspicue seriatim punctatis. 

 Long. corp. 6 mm., lat. 2^-, long, prothoracis if, lat. prothor. 2, long, elytr. 2\ mm. 



We have only one mutilated specimen, but it is one of the most distinct of the 

 species. The colour is probably variable. The throat is transversely convex, quite 

 without impressions on the disc, finely punctate, with a fine pubescence ; the sides are 

 but little explanate and the hind angles are distinctly obtuse. The shining elytra are 



58-2 



