Zoological Society. 283 



fractu ultimo subsoluto, /iasciis angustis, alba articulatis, or- 

 nate ; aperturd oblongo-ovali, labio plied evanidd instructo. 

 Hub. PhiUppine Islands. Mus. Cuming- 



A small white species, with the last whorl nearly free, and having 

 the suture deeply channeled. 



4. Descriptions of new Shells, from the Cumingian Col- 

 lection ; WITH A Note on the genus Nematura. 

 By Arthur Adams, R.N., F.L.S. etc. 



Pyramidella metula, a. Adams. P. testd subulatd, turritd, 

 apice obtusiusculo, albidd anfractibus decern planulatis, longi- 

 tudinaliter costatd, costis confertis eequantibus, interstitiis 

 lineis transversis elevatis ornatd ; aperturd ovali, labio incras- 

 sato, in medio plied unicd instructo ; labro margine subin- 

 crassato. 



Hob. Mizamis, Cagayan. Mus. Cuming. 



A small elongated species, somewhat resesembling a Rissoina, with 

 the intervals between the ribs finely cancellated, and the whorls very 

 numerous. 



Pyramidella aclis, A. Adams. P. testd subulatd albd nitidd, 

 anfractibus octo planiusculis longitudinaliter plicatd, plicis 

 cequalibus subconfertis, interstitiis Icevibus; aperturd semiovatd, 

 labio subincrassato plied unicd munito ; labro subdilatato, 



Hab. Philippines. Mus. Cuming. 



This is a slender subulate species, likewise resembling in appear- 

 ance a Rissoina. 



Lacuna carinifera, A. Adams. L. testd ovatd, spird acuminata, 

 anfractibus quatuor, late umbilicatd, fulvd, anfractu ultimo 

 angulato, carind transversd elevatd, rufo-fusco articidatd, or- 

 nato ; aperturd semiovatd ; labro acuto, angulato, labio recto, 

 fissurd umbilicali elongatd. 



Hab. Borneo. Mus. Cuming. 



The single prominent -keel round the periphery of the last whorl 

 is the principal feature of this species. 



Velutina SiTKENSiS, A. Adams. V. testd nigro-fuscd, epider- 

 mide liris elevatis transversis confertis obtectd, longitudinali- 

 ter valdb sulcatd, sulcis subdistantibus ; aperturd ovali, intus, 

 sulcatd; labro margine refiexo, nigro, incrassato ; postice non- 

 producto supra anfractum ultimum. 

 Hab. Sitka. Mus. Cuming. 



The dark brown colour and oval form distinguish this species from 

 V. laevigata, which also has the outer lip arched and expanded poste- 

 riorly. 



Otina fusca, a. Adams. O. testd magnd, solidd, semiopacd, 

 fused, sine epidermide, dorso convexd, longitudinaliter subpli- 

 catd, transversim tenuiter striatd, labio lata, piano, et exca- 

 vato ; labro recto, non refiexo aid expanso. 



Hab. Benguela. Mus. Cuming. 



