io8 FAUNA HAWAIIENSIS 



(12) Plagithmysiis bishopi Sharp. 



Plagithmystis bishopi Sharp, Ent. Mo. Mag. xxxii. 1896, p. 242. 



(Plate VI. fig. 12.) 



Hab. Hawaii; Kilauea, 4000 ft., August 1S95, and 1896. On Pelea sp. 

 (Perkins). 



Plagithmysus bishopi var. gracilis, Sharp, /. c. The unique individual of this variety 

 was found on another tree resembling " pua " but with lighter, smoother bark. 



(13) Plagithmysus vicinus Sharp. 



Plagithmysus vicinus Sharp, t. c. p. 243. 



Hab. Hawaii; Mauna Loa, 3000ft., October 1892; Perkins. 



Undoubtedly a distinct species. On Pelea sp., but not the same species as that to 

 which P. bishopi is attached. 



(14) Plagithmysiis bilineatus Sharp. 



Plagithmysus bilineatus Sharp, /. c. p. 243. 



(Plate VI. fig. 14; ?.) 



Hab. Hawaii ; Kilauea, also in the Kona and Puna districts. On the " Ohia 

 lehua " tree, Metrosideros polymorpha, Perkins. 



Besides being found in more than one locality this species was obtained in plenty. 

 The variation in size (from 9 — 20 millim. long) is considerable, but in respect of colour 

 it is less than in some other species. Some specimens are considerably blacker than 

 others ; but the blackness shews itself chiefly on the elytra. The hind legs are 

 sometimes much more broadly tinted with black towards the tips than they are in 

 others, and this is in nearly all cases correlative with a greater extension of the black 

 colour on the wing-cases. The head and thorax remain rfed in the whole of the series 

 before me. 



(15) Plagithmysus lanaiensis Sharp. 



Plagithmysus lanaiensis Sharp, /. c. p. 244. 



Hab. Lanai ; Halepaakai, 3000 ft, July 1894, Perkins. Probably (but only 

 inferentially) attached to Metrosideros polymorpha, this being the predominant tree 

 in the locality of capture. 



