Zoological Society, 



' ' ifd^sversim crebriliratis, longitudinaliter subobliqui undulosO'Va- 

 ricosis, varicibus obtusis ; castaneo-fuscescente, columella et aper- 

 ture fauce subrosaceis ; canali brevi. 



Hab. ? 



A small chestnut-brown shell, quite distinct from any hitherto 

 described. 



MuREX EURYPTERON. Mur. testd ovato-oblongdy basim versus 

 contractd, spird breviusculd, acuminato-turritd, suturis subexca- 

 vatis ; anfractibus superne depressis, transversim obscur'h obtuso- 

 liratis et punctato-striatis, tuberculo superficiario inter varices ; 

 trivaricosd, varicibus tenuibus, erecto-alatis, ultimo latissime ex- 

 panso, superne falcato-recurvo ; aperturd parvd, ovatd ; canali 

 breviusculo. 

 Hab. Japan ? 



For this new and remarkable shell I am indebted to the kindness 

 of the Rev. W. R. Crotch, whose manuscript name eurypteron, from 

 ehpvs, widely extended, and irrepop, wing, I feel great pleasure in 

 adopting, as being peculiarly expressive of its curious alate growth. 

 It approaches nearest to the Murexfalcatus, but in that species there 

 are five varices on a whorl, whilst in this there are but three, and the 

 winged expansions of the Murexfalcatus are folded over at the su- 

 perior margin. The specimen above described, and which is, I be- 

 lieve, unique, was received from Holland, and is supposed to have 

 come ftx)m Japan. 



The following paper, entitled " Description de quelques nouvelles 

 N^rites Fluviatiles, du cabinet de H. Cuming, Esq.," par C. A. 

 Recluz, was then read : — 



I. Nerit^ subhemisph^ric^. 



1. Nerita Rossmassleriana. Ner. testd subhemispheericd, con- 

 vexd, luteo-fulvd, nigra irregular iter reticulatd; anfractu unico 

 leBvissime perlongum striate; peritremate ovato-rotundato, bast 

 obtuse anguloso ; aperturd croced ; columella planissimd, declivi, 

 margine acuto, in medio subarcuato et obsoletissime 2-4-denticu- 

 lato. 



Hab. } 



Alt. 10, lat. 18, convex. 10 mill. 



2. Nerita violacea, Gmelin ; Ner. crepidularia, Lamk. 



Var. /3. Testd ellipticd, luteo-pallidd, violaceo-nigricante reticulatd ; 

 aperturd nigricante ; peritremate continue. 



Hab. } 



II. Serrate. i\ 



A. Globosce. 



3. Nerita sobrina, Ner. testd globoso-ovatd, lutescente, lineis 

 nigris distantibus latiusculis undatis vel angulato-flexuosis fulgu- 

 rantibusque pictd; anfractibus tribus, ad suturam nigro-margi- 

 natis / spird semispharicd ; columelld convexiusculd, superne plus 



