158 Mr. G. J. Arrow on the 



with the exception of the sutural one^ vanishing behind the 

 middle. In large males the rugose area of the pronotum 

 extends from the front to the hind margin on each side, but 

 does not include the whole lateral part. 



Papuana l(Bvipennis, sp. n. 



Nigra, nitida, sat lata, pectore parce rufo-hirto, clypeo utrinque 

 acute angulato, subtiliter punctulato, vertice utrinque rugoso ; 

 prothoraco antice retuso, utrinque rugoso, dorso medio acuminato, 

 angulis anticis acutis, posticis obtusis, basi trisinuato ; scutello 

 liBvi ; elytris latis, laevibus, stria suturali profunda, indistincte 

 punctata ; mandibulis valde porrectis, extus parum profunda 

 uni-incisis : 



c5' , capito cornu gracili antice planato, apice obtuse, armato ; pro- 

 thorace postice lobo elovato, summo acuminato tuberculoque 

 utrinque parvo, interdum obsoleto, munito, margine antico 

 lateribusque, spatio posteriori carina arcuata delimitato excepto, 

 rugosis, superficie reliqua laevi (individuorum maximorum autem 

 cornus basi antice etiam rugoso) ; pygidii lateribus crebra 

 punctatis, medio liBvi : 



$ , capite tuberculo lato armato ; prothorace medio leviter acumi- 

 nato, antice rugose punctato, postice subtilissime parce punctu- 

 lato ; pygidio minute et crebre punctato. 



Long. 20-29 mm. ; lat. max. 11-16 mm. 



Hab. Solomon Islands : Kieta. 



This is extremely like semistriata, with which it agrees in 

 all its structural details, but it is shorter and broader in 

 proportion and the elytra are very smooth, with only a single 

 sutural stria upon each. 



Papuana tridentipes, sp. n. 



Nigra, nitida, modice elongata, subtus picea, parcissime rufo-hirsuta ; 

 capite rugoso, clypeo antice sat late arcuato, utrinque minute 

 re&exo-angulato ; prothorace uitidissimo, vix perspicue punctato, 

 lateribus fortiter arcuatis, angulis anticis acutis, posticis obtusis- 

 simis ; scutello laevi ; elytris grosse striato-punctatis, puuctis 

 annulatis, apicibus crebro et a;quahter punctatis ; pygidio grosse 

 rugoso-punctato ; tibiis anticis acute tridentatis ; mandibulis 

 extus trilobatis : 



(J , capito medio cornu parvo, rocurvato, sat gracili armato ; pro- 

 thorace antice retuso, postice lato producto, lobo utrinque breviter 

 acuminato, lateribus pone angulos antieos obtuse ascendent ibus ; 

 pygidio convexo ; tarsorum anticorum ungue iuterno lato, hauJ 

 aouto, integro : 



$ , capite medio minute bituberculato ; pygidio ante medium 

 transverse carinato. 



Long. 17-21 mm. ; lat. max. 0-11 mm. 



