137 



Ranella pustulosa. Rati. testd ovatd, subdepressd, ponderosd, 

 castaned; anfractihus pustularum grandium seriebus duabus tri- 

 busve Uvido-castaneis cingulatis ; varicibus granuloso-liratis ; colu' 

 melld granuloso-rugosd, rugis albidis ; labro planissimi fimbriato, 

 superne sinuato,fusco, radiatim albisulcato. 

 Conch. Icon., Ranella, pi. 3. f. 11. 

 Hab. Ascension Island. 



This shell appioximates so closely to the Ranella ccelata in the 

 style and character of its sculpture, that a specimen or two of difFer- 

 ent ages seem all that is necessary to exhibit a complete specific 

 connection bet\veen them ; it has ho\vever been demonstrated by the 

 researches of two gentlemen of perhaps the greatest practical expe- 

 rience, Mr. Cuming and Mr. Hinds, that no species of shell common 

 to the western coast of South America has ever been discovered on 

 the coast of Africa. 



Ranella ponderosa. Ran. testd acuminato-ovatd, crassd, pon- 

 derosd, varicibus valde prominentibus ; anfractibus superne leviter 

 angulatis, granulorum seriebus ci?igulatis, alternis graiiulis gran- 

 dibus, bipartitis ; rubido-fuscd , lutescente ; columelld granulatd et 

 rugosd ; canali brevi, subrecvrvo ; labro plano-incrassato, granu- 

 loto, superni sinuato. 

 Conch. Icon., Ranella, pi. 3. f. 14. 



Hab. ? 



The sculpture of this shell approaches very nearly to that of the 

 Ranella ceelata ; it only reąuires however a slight examination of the 

 specimens before me in diiferent stages of grovvth, to see that they 

 are specifically distinct. 



Ranella nobilis. Ran. testd oblongo-ovatd, depressd, crassius- 

 culd ; spird acuminatd, varicibus angustis, radiatim stellatis ; an- 

 fractibus granuloso-liratis, prmcipue super varices, i?i niedio tuber- 

 culatis, anfractu ultimo tuberculorutn seriebus duabus armato ; 

 albidd , fuscescente subtiliter maculosd; columelld f ortiter rugosd ; 

 aperturd oblongd, utrinque canaliculatd, fauce albd; labro f ortiter 

 rugoso. 

 Conch. Icon., Ranella, pi. 4. f. 16. 



Hab. > 



The form of this noble species is somewliat intermediate between 

 that of the Ranella pulchra, or " Finned Frog," and the ordinary type 

 of the genus, the varices exhibiting an indication of that peculiar 

 star-like radiation common to the former, -whilst the aperture is of 

 an oblong canaliculated form, with the wrinkled lip and columella 

 of the latter. The sculpture most resembles that of the Ranella f o- 

 liata. 



Ranella coriacea. Ran. testd oblongo-ovatd, depressiusculd, 

 spird subobtusd, varicibus rotundatis ; anfractibus undique creber- 

 rime granulatis, transversim costatis,costis latis, interdum subobso- 

 letis ,irregulariter tumido-nodosis ; aurantio-fuscescente ; columelld 

 sparsim rugosd; ajyerturd ovatd, utrinque leviter sinuatd ; labro 

 intus radiatim denticulato. 



