173 



October 23, 1832. 



Lieutenant-Colonel Sykes in the Chair. 



The exhibition was resumed of the collection of Shells formed by 

 Mr. Cuming on the western coast of South America, and among 

 the islands of the Southern Pacilic Ocean. The new species were 

 accompanied, as on the previous occasions, by descriptions from 

 tlj€ pens of Mr. Broderip and Mr. G. B. Sowerby. 



Genus Cancellaria. 



Cancellaria uniplicata. Catic. testd ohlongd, utrinque acu- 

 minata, Jiiscd ; anfractibiis 5 — 6 decussatis, prope suturam cre- 

 nulatis, et jjostice untcarinatis, carina granosa ; aperturci ob- 

 longd in canalem antice pj'oducta ; labia externo int lis dent icu- 

 lato, inargine crenulatd ; columella uniplicata : long. 75, lat. 

 O-yS poll. 



Hah. in America Meridionali prope Panamam. 



This is the only species known to Mr. Sowerby with a single fold 

 on the columella : two specimens were dredged in sand at a depth 

 of ten fathomsj near Panama, by Mr. Cuming — G. B. S. 



Genus Ovulum. 



OvuLUM RUFUM. Ov. tcstd oblongd, postice acuminata, rufd ; 

 labia externo incrassato, pallidiore ; aperturci angustd, antice 

 latiore ; columella intiis linea longitudinali depressd, jdicdqtie 

 subspirali : long. 0*50, lat. 0'\5 poll. 



Var. testa tota pallida. 



Hab. ad Columbiam Occidentalem. 



A few specimens were dredged in sandy mud at a depth of seven 

 fathoms in the Bay of Caraccas. — G. B. S. 



Ovulum Avena. Ov. testd oblongd, riifd, extremitatibus subacu- 

 minatis ; dorso subgibboso, transversim tenuissime striata ; labia 

 externo incrassato, palUdioi-e ; aperturd atigustd, antice latiore, 

 postice emargi)iatd; columella postice uniplicata: long. 0"55, 

 lat. 0-22 poll. 



Hab. in America Centrali. (Conchagua.) 



This species varies much in the intensitj' of its colouring. — 

 G. B. S. 



Ovulum inflexum. Ov. testd oblongd subcylindricd , Icevi, pal- 

 lidd, postice subrostrata, inflexd ; aperturd antice subeffusd ; 

 labia externo incrassato, columellari intus carinato ; colnmelld 

 postice uniplicata: long. 0'70, Int. 025 poll. 



Hab. in America Centrali. (Gulf of Dulce.) 



A single specimen only was found ; Mr. Sowerby possesses two 

 others, which were in G. Humphrey's collection. — G. B. S. 



XXIV.] Zo',)i. Soc. Prockkdixgs or TJiE CoMM. OF Science. 



