34U 



to food-plant, etc., are better than nothing. Casually collected 

 examjjles in indifferent condition are almost valueless. 



Cerambycidae, Plagitii:\ivsixi. 



Nesithmysus gen. nov. 



Tliis nanu' is proposed for ;i large species of tlie Plagitlimysini. witli 

 a much wider prothorax tlian that of Plaaithniysus. this part heing 

 hardly less wide in the middle than the hase of the elytra. The latter 

 are long, less pointed or cuneate tlian in Plai^itliiiiysiis, and the wings in 

 repose are shorter, so that the tips which arc bent inwards, can l)e 

 almost, if not quite, covered by the elytra. Owing to the length and 

 form of the wing-cases, the insect has a heavy and less elegant facies 

 than that of the other genus. The pronotum has a median crest well 

 elevated in front and behind, the ridges on either side of this are repre- 

 sented by black callus lines elevated into strong tubercles posteriorly. 

 The second and following joints of the antennae have only very sparse 

 line hairs. The hind femora have a well-marked apical club, very sim- 

 ilar to that of some species of Clytarlus. Tlie hind tibiae and tarsi are 

 only thinly clothed with hair and differ greatly in this respect from 

 normal Plagithmysus. The elytra have no definite pattern of markings, 

 being clothed with extremely minute pubescence, but at the extreme base 

 between the scutellum and the shoulders there is an indetinite area 

 clothed with longer and denser yellow hair. 



Obs. I do not think it possilde to retain this insect in 

 either of the two o-enera referred to ahove, hut it is more 

 nearly allied to Cli/tarhis than to the other. Dr. Shai'p has 

 already pointed out that certain sjx'cies described l)y him, liav- 

 ing intermediate characters, are placed with dilRculty. At 

 ])resent, I lind it convenient to assign to PlagitJiDiysus all those 

 species which closely agree in the dense clothing of the hind 

 tibiae and tarsi, although this causes some changes in the ar- 

 rangement ado]ited in the "Fauna ITawaiiensis". Tliis ])liin 

 Avill throw iuto Cli/farlii-^ some species now included imder 

 rJagithmyytus. but which in general facies seem to agree l)etter 

 with the former. \ have alluded to this nuitter because one of 

 ihese troublesome foi-nis is dcscrilx'd l)elow. 



Nesithmysus bridwelli n. sp. 



Ferruginous or rnfescent ; the head black, tliorax l)eneath largely l)lack 

 or dark. A stripe on the median crest of the pronotum (varying in 



