1874.] 14.9 



Not common. It has been taken by Mr. Douglas and myself at 

 Dartford Heath, Seven Oaks, Boxbill, &c., in July and August, by 

 sweeping. 



Developed form, unknown to me. 



Of the second species, Doratura homopliyla, Flor, not yet known 



to occur in Britain, I may add, for assistance in leading to its identity, 



that it is larger than D. sfylata, but of the same colour, and can, I 



may say only, be separated by the differences in the genital segments 



in both cases. 



{To he continuedj. 



DIAaNOSTIO CHARACTEES OF UNDESCRIBED C0SS0NID2E. 

 BY T. VEBJv'ON WOLLASTON, M.A., F.L.S. 



Family COSSONID^. 



(Sub-Family Pentaetheides.) 



Genus PENTABTRRUM. 



Wollaston, Ann. Nat. Hist., xiv, 129 (1S54). 



Pet^tabtiirum Sharpianum, n. sp. 



P. angustiim, parallelo-sub-cylindincum, clcpressiusculum, svib-iiiticlum, rufo- 

 piceum, clytris seusim pallidioribus ; capite valdc exserto, ociilis proraineutibus ; 

 protlioracc (in <? subovali, scd in !)? paulo magis triaiigulari) alulaceo, dense efc sat 

 profunde punctato, in ? teuuiter carinulato, sed in $ posticc in medio late longitu- 

 dinaliter sub-impresso ; elytris pai'allelis,piceo-ferruginci8,punctato-striatis, interstitiis 

 transvcrsira rugulosis ac minute uniseriatim punctulatis ; antcnnis pedibusque cras- 

 siuseulis, pallide nifo-piceis ; tarsorum artieulo 3tio lato ct valde profunde bilobo. 



Mas, rostro lafciore, pone medium gradatim angustato, alutaceo ct sat profunde 

 punctato ; antcnnis mox ante medium ejus insertis. 



Fern., rostro paulo longiorc, graeili, sub-cyliudrico, nitido ct miuutissime punc- 

 tulato ; antcnnis circa medium ejus insertis. 



Long. Corp. lin. 2i. 



Habitat in Nova Zealandia, ab 'Auckland' a Dom.Lawson missuni. Ad dcscri- 

 bcndum communicavit D. Sharp, cujus in lionorcm nomen trivialc dedi. 



{Obs. — Species inter Pentarthra insignis corporo elongato angusto depi'cssiuscido 

 minus nitido, scutello magno, pcdibus crassis, tarsorum artieulo 3tio lato et valdo 

 profunde bilobo, necnon rostro secundum scxum conspicue divcrso. A P. loitgirostri, 

 in NovA. ZcalaTidiA. degente, differt, inter alia, corporc longiore, angustiorc, magis 

 parallclo, magis depresso, et minus nitido ; colore, prajscrtim in cljtris, pallidiore ; 

 rostro dissimili, minus arcuato, et basi, mox pono oculos, hand a frontc stricturil 

 diviso ; protlioracc densius scd minus grosse punctato ; necnon tarsisetiam latioribus. 

 Formd angustatil parallclA. corporequo minus nitido etiam P. angustissimum, ex 

 insulis Japonicis, aliquo modo simulat ; sed coi'porc majore, pallidiore, scutello multo 

 magis conspicuo, tarsorum artieulo 3tio multo latiore ac magis bilobo, oculis magis 

 prominontibus, necnon rostri etructuri toto crolo differt.) 



