288 Mr. C. J. Gahan on new 



In form this species presents notliin^ unusual, but its large 

 size and smooth elytra at once di.stinguisii it from all the 

 described species. The antennai are very long, the apical 

 joint is elongate-ovate, obliquely truncate at the apex ; the 

 tenth joint is a little longer than broad, much narrowed at 

 the base ; the ninth joint is about one third longer than 

 broad, obliquely narrowed to the base. The head is finely 

 ])unctured, but with large punctures intermixed. The thorax 

 is about as broad as long, oblif|uely narrowed in front, 

 shining, deeply impressed in the middle ; extremely delicately 

 and not very closely punctured ; the sides strongly vermicu- 

 lose ; the rugosity extending considerably on to the disk. 

 The elytra are extremely finely and closely punctured where 

 there is the fine pubescence, but there are bare smooth spots 

 at intervals ; the lines of punctures are only distinct at the 

 sides, and the punctures are small ; each elytron has three 

 not very conspicuous costse, the first commencing behind the 

 middle, the next a little longer, the third almost entire, 

 commencing below the shoulder. The intermediate tibiae are 

 slightly curved. The abdomen is shining and finely punc- 

 tured ; the third segment has a very small incons[)icuous 

 pubescent patch in the middle. 



XXXI. — On the Characters of a new Genus and Six new 

 Species of Longicorn Colcojjtera from New Guinea. By 

 C. J. Gahan, M.A. 



PrionidaB. 

 Osphryon hirticollis^ sp. n. 



Nigro-fiiscus ; capite Ihoracoque supra subtusquc sat dense fulvo- 

 villosis ; protliorace iitriii(]uo trispiuoso; elytris dense punctu- 

 latis, sordidc tlavo-tostacois, sutura it raargiiieextcriore angiisiis- 

 simcpiceis, apicibusutrisque bidentatis ; autotinis totis nigro-fuscis, 

 ( J ) corpore longitudiue fcrc a)(]ualibus, ( i^ ) medium elytrorum 

 paullo superantibus ; segmento quinto abdominis ( J ) tortitcr, 

 ( 2 ) Icvitor oniarginafco. 



Long., (5 37-40, 5 50 mm. 



JJah. Doreh and Art'ak. 



Dark brown. Elytra yellowish testaceous, but in places 

 exhibiting a darker tint ; along the suture and the outer 

 margin very luurowly pieeous. Prothorax with three distinct 

 sjjines on each side, i>t ^^•llicll the posterior is longest (on one 



