440 FAUNA HAWAIIENSIS 



GoNiORVCTUs Sharp. 



Gonioiyctus Sharp, Tr. ent. Soc. London, " 1878, p. 131. 



This genus seems quite distinct from Brachypephis by the characters previously 

 mentioned by me (1. c). The aberrant forms of the genus do not approacli Brachy- 

 pephis, and are really differentiations of Gonioiyctus itself; I have not thought it 

 necessary to establish distinct genera for them. These aberrant forms are G. oppo- 

 sitiis and G. cxtranens. If they were separated it would be necessary to place them 

 in different genera. The species of this genus are very closely allied ; they are 

 apparently rare, and we have not sufficient material to elucidate them at all thoroughly. 

 Colour seems to be very variable in them. Unfortunately many individuals of our 

 small series are immature. I think this is probably due to the life of the perfect insect 

 being very brief ; and this may also account for their apparent rarity. 



(i) GoJiioi'yctus kaiiaiensis, sp. nov. 



Suboblongus, depressus, ferrugineus, fusco-, plus minusve, variegatus, vix aeneo- 

 micans, dense punctatus : elytris sulcis latis sed obsoletis impressis. Long. 8^ — 9 mm., 

 lat. 3^, long, prothoracis 2:^:, lat. proth. 3, long, elytr. 4, lat. elytr. 3^ mm. 



One of the most easily recognised species ; of broad form, with the punctuation 

 less obsolete than usual. Plate XIV. fig. 9 a shows the dorsal aspect of the last segment 

 in the male (the supplementary segment is hidden by the pygidium) ; hind margin of 

 the male last ventral plate feebly bisinuate ; the supplementary segment very broad. 

 In the female the pygydium (Plate XIV. fig. 9 b) is truncate at the tip, with a slight 

 median longitudinal elevation, and extends rather farther back ; the last ventral is very 

 slightly rounded behind, and has long pubescence on each side. Nineteen specimens. 

 The colour is very variable. 



Hab. Kauai. 4000 ft. mts. above VVaimea, &c. ; Koholuamano (nos. 256, 266, 

 527, &c.. Perkins). 



(2) Goiiiorvctns manicnsis, sp. nov. 



Latus, depressus, subnitidus, subtilissime pubescens, ferrugineus, capite etc. fusc- 

 escentibus ; prothorace disco inaequali ; elytris sulcis parum profundis, latis munitis, 

 obsolete punctatis. $ Long. 8 mm. lat. 3^, long, prothoracis vix 2, lat. prothoracis 2f, 

 long, elytr. 3^. 



We have only one specimen of this species. By its comparatively broad form it 

 somewhat resembles G. kanatoisis, but has a less ample thorax, and a more obsolete 

 punctuation. The hind margin of the pygidium is rather more rounded. The thorax 

 is a Q-ood deal contracted at the sides in front, and the sides are a good deal raised. 



Hab. Maui, Haleakala, 5000 ft. v. 1896 (no. 604, Perkins). 



