COLEOPTERA 



105 



(i) Plagithmysus vitticollis Sharp. 



Plagithmysus vitticollis Sharp, Ent. Mo. Mag. xxxii. 1896, p. 240. 



(Plate VI. fig. 5 ; ?.) 



Hab. Hawaii, Kilauea, August 1895. On Akala {Rubus sp.) Perkins. 



Var. longuhis Shp. 1. c. 



Hab. Hawaii, Olaa. 



Mr Perkins has now procured a fair series of the variety longulus. None of the 

 individuals have any signs of being red on the elytra ; the thoracic vittae are less 

 definite, the lateral yellow patch being considerably less extensive and there are few or 

 no white hairs on the hind feet. One or two of the individuals are however intermediate 

 in these respects, so that it is probable that both var. longuhis and the typical form 

 belong to one species which has a slightly different variation in the two localities. As 

 the two forms of the species live on different trees, it would be possible to infer that we 

 have in this case a species in process of dividing into two. 



(2) Plagithmysus pernmiidus, sp. nov. 



Gracilis, niger, thorace nigerrimo, vittis albidis angustis perdiscretis ; elytris dense 

 punctatis, signaturis irregularibus albido-ochraceis ubique ornatis ; femoribus basi flava, 

 tibiis tarsisque rufo-obscuris, tarsis posterioribus, dense albido-hirsutis. Long. 1 2 millim. 

 (Plate VI. fig. 6.) 



A very distinct species, remarkable on account of the very definite white stripes on 

 the jet-black thorax, and by the peculiar irregular but very definite pallid marks on the 

 elytra, which along the suture are more confluent than elsewhere so as to form a pair of 

 much broken irregular lines ; the white tarsi, in contrast with the dark tibiae, are also 

 remarkable. The antennse are thin and long. The hind and middle legs are very long, 

 but not very thick. The under surface is black, and very definitely marked with 

 patches of pale sulphureous scales ; the posterior aspect of the hind coxae has a very 

 definite white patch on it. The femora are sparingly clothed with very short white 

 hairs. The sexes apparently differ very little. 



Hab. Kauai, 2000 ft. Feb. 1897: nine examples, Perkins. This feeds on the 

 same tree — Bobea sp. ? as P. vitticollis var. longulus, and Callithinysus liirtipes. The 

 tree is called "ahakea" by the natives. 



(3) Plagithnysus newelli Sharp. 



Plagithmysus newelli Sharp, Ent. Mo. Mag. xxxii. 1896, p. 240. 



(Plate VI. fig. 7.) 



Hab. Maui ; Brother Matthias Newell, a single example. 



