COLEOPTERA 



447 



(17) Gonio7yctus bifarius, sp. nov. 



Ferrugineus, extense infuscatus ; elytris sulcatis obsolete punctatis. ,^ Long. corp. 

 7 mm., hit. 2^-, long, prothoracis if, lat. prothoracis 2:j;, long, elytr. 2f mm. 



Extremely similar to the same sex of G. lanaiensis, but with the male sex characters 

 different, the pygidium being very acnminate in the middle of the hind margin, and 

 the supplementary segment rather deeply notched : the lateral angles of the last ventral 

 are slightly prominent, except for this the hind margin is nearly truncate. The thorax 

 is densely punctured, and but little uneven, flat on the disc. The grooves on the 

 elj'tra are well marked but the punctuation is quite obsolete. There is only a very 

 minute pubescence, but the surface is scarcely at all shining. One specimen. 



Since the above was written I have been able to examine three specimens recently 

 found by Mr Perkins on Molokai in 1903. Two of them are females and differ from 

 the corresponding sex of G. lanaiensis, in having the terminal portion of the pygidium 

 longer and narrower. The male individual quite agrees with the type described above. 



H.AB. Molokai, Mountains, 9. vi. 1893 (no. 179, Perkins). 



(18) Goiiioryctiis z'iciiiiis, sp. nov. 



Latus, ferrugineus, extense nigricante ; thorace fortiter transverso, inaequali, fortiter 

 punctato, elytris punctato-sulcatis. $ Long. corp. 6^ mm., lat. 2|, long, prothoracis if, 

 lat. proth. 2-^, long, elytr. 2| mm. 



We have only one specimen, a female ; it has the pygidium broad and truncate at 

 the tip, which moreover is depressed ; so that the individual is not a variety o( G. lanai- 

 ensis ; this form of the female pygidium, in which the angles are distinct, and the surface 

 between and near them a little bent down, is an approximation to the slightly notched 

 pygidium of G. latns. G. vicznus differs also from G. lanaiensis by the shallower, 

 narrower grooves of the elytra, and the more distinct punctures in them. The greater 

 amount of black colour in this specimen of G. viciinis, even the legs being to a large 

 extent black, is I believe merely varietal. The pubescence is much rubbed oft, but 

 from the remains I think would be in the fresh state much like that of G lanaiensis. 



Hab. Lanai, 2000 ft. January, 1S94 (Perkins, no. 80). 



(19) Gonioryctns ardmts, sp. nov. 



Sat latus, subdepressus, baud nitidus, ferrugineus, hie inde infuscatus, vel nigro- 

 variegatus ; prothorace fortiter transverso, ad latera parum impresso, dense subtiliter 

 punctato ; elytris obsolete punctato-sulcatis. $ Long. corp. 5^^ mm., lat. 2;^, long, pro- 

 thoracis i|-, lat. prothor. vi.x ultra 2, long, elytr. 2^ mm. 



F. H. III. 58 



