Coleopterous Subfamily Djnastinas. 157 



uni- aufc bi-incisOD. Mentum antice .iTigustatum. rrosternura 

 postice elevatum, truncatum, longe ciliatum. Pedes sat longi, 

 tarsi antici breves. Tibiae anticaj quadri- aut tri-dentatue, poste- 

 riores truncatae, longo spinosas, tarsorum poslicorum articulo 

 primo triangulari. 

 (5 . Caput cornutum. Protborax antice retusus, plus minusve 

 cornutus. Pedia autici unguis iuternus distortus. 



Two species of this genus were described by Fairmaire 

 under the name of Plmelopus (P. hubneri and armicollis) , to 

 which genus it is nearly related, differing in the more tri- 

 angular head, truncate clypeus, and less abbreviated legs, of 

 which the front tibiae are four-toothed and the middle and 

 hind tibiae much less dilated from base to apex and fringed 

 with long, not closely-set spines. 



I have seen several species, all from the islands of Papua 

 and Polynesia. The following is the typical species : — 



Papuana semistriata, sp. n. (PI. IV. figs. 4, 5, 6.) 



Xigra vel piceo-nigra, nitida, pectore parce rufo-birto ; cl3'pe9 

 utrinque acute augulato, subtilissime punctulato, vertice utriiiquo 

 rugoso ; protborace antice retuso, rugoso, dorao medio acuminafco, 

 angulis anticis acutis, posticis ol)tusis, basi trisinuato ; scutello 

 Isevi ; elytris fortiter striatis, striis annulate punctatis, suturali- 

 bus integris, reliquis postice abbreviatis, lateribus apicibusque 

 fere loevibus ; maudibulis valde porrectis, extus parum prol'unde 

 uui-incisis : 



cT , capita cornu gracili, antice planato, apice obtuso, armato ; pro- 

 tborace postice lobo elevato, summo acuminato, tuberculoque 

 utrintiue parvo, interdum obsoleto, munito, margins antico 

 lateribusque, spatio lateral! carina breve arcuata delimitato 

 excepto, rugosis, superficie reliqua lajvi (individuorum maxi- 

 mdrum autem cornus basi antice etiam rugoso) ; pygidio 

 punctato, medio fere Isevi : 



2 , capita tuberculo lato armato ; protboracis medio leviter acumi- 

 nato, antice rugoso ; pygidio crebre et minute punctato. 



Long. 22-28 mm. ; lat. max. 12-14 mm. 



Hab. British New Guinea : Fly River ; Amboina. 



This is a larger species than P. hubneri and armicollis, 

 Fairm., with mote highly developed armature, although tlie 

 latter is, of course, subject to great variation. The female, 

 both in this and the following species, appears always to have 

 a retuse and rugose area in the anterior part of the pronotnm 

 and a feeble but sharp elevation at the middle. The 

 mandibles, in both sexes, are much more produced forwards 

 and have only a single slight notch at the side. The elytra 

 of P. semistriata are coarsely punctate-striatCj the strise, 



