RANELLA. 



Species 25. (Mus. Cuming.) 



Ranella semigranosa. Ran. testa elongatd, turritd, 

 tenuiculd, vnricibiis nngustis, subindistinctis ; anfruc- 

 tibus transversim exiliter granuloso-liratis, liris an- 

 fract&s ultimi subevanidis, subdistantibus, interstitiis 

 siriatis ; albidd, fuscescente varie tinctd; columelld 

 subexcavatd, minutissiml rugosd, superne callositate 

 armatd ; aperturd ovatd, utrinque canaKculatd ; labro 

 leviter denticulato. 



The half-grained Ranella. Shell elongated, tur- 

 reted, rather thin, varices narrow, rather indistinct ; 

 whorls transversely faintly granulously ridged, 

 ridges almost disappearing on the last whorl, rather 

 distant, interstices striated ; whitish, variously stain- 

 ed with light brown ; columella a little excavated, 

 very minutely wrinkled, armed at the upper part 

 with a callosity ; aperture ovate, canaliculated at 

 both ends ; lip slightly denticulated. 



Lamarck (not of Kiener), Anim. sans vert. (Deshayes' 

 edit.), vol. ix. p. 548. 



Hab. Island of Ticao, Philippines ; Cuming. 



Several examples of this species were collected by 



Mr. Cuming at the above-mentioned locality, all of the 



same uniform, half-grained character. 



Species 26. (Mus. Cuming ! 



Ranella coriacea. Ran. testii oblongo-ovatd, depres- 

 sitisculd, spird subobtusd, varicibus rutundatis ; an- 

 fractibus undique creberrim'e granulatis, transversim 

 costatis, costis latis, interdtim subobsolctis, irregula- 

 riter tumido-nodosis ; aurantio-fuscescente; columella 

 sparsim rugosd; aperturd ovatd, utrinque leviter si- 

 nuatd; labro i/i/us rad'wtim denticulato. 



The shagreen Ranella. Shell oblong-ovate, a little 

 depressed, spire rather obtuse, varices rounded ; 

 whorls everywhere very closely granulated, trans- 

 versely ribbed, ribs broad, sometimes nearly obso- 

 lete, armed here and there with swollen knobs ; 

 orange-brown; columella sparingly wrinkled; aper- 

 ture ovate, slightly sinuated at both ends ; lip ra- 

 diately denticulated within. 



! eve, Pro. Zool. Soc, 1844. 



Ranella scrobiculator, var. Sowerby, Jun. 



Hab. ? 



This interesting species, which Mr. Cuming possesses 

 in different stages of growth, is the shell figured by Mr. 

 G. B. Sowerby, Jun., in the ' Conchological Illustra- 

 tions' as a variety of his Ranella scrobiculator (Triton 

 scrobiculator, Lamarck and others) ; I think, however, 

 with M. Deshayes, that it is " une coquille qui me para.lt 

 toujours differente; fen ait vu plusieurs exemplaires et 

 plusieurs figures, etj'ai observe des differences specifiques 

 constant es. Cette soi-disant variite a plutdt les carac- 

 leres des Ranelles que le Scrobiculator proprement dit, et 

 c est sans doute ce qui explique pourquoi un certain nombre 

 de conchyliologues veulent que le Scrobiculator soil une 

 Ranelle. Pour nous, qui en avons vu fanimal, e'est un 

 Triton.' Note in new edition of Lamarck's Anim. sans 

 vert., vol. ix. p. 626. 



Species 27. (Mus. Cuming.) 



Ranella albifasciata. Ran. testa depresso-ovatd, 

 spird brcviuscu/d, acuminata ; varicibus rotundis ; an- 

 fractibus acute angulatis, seriatim fortiter granulosis, 

 interstitiis hevibus, granulis ad angulum majoribus ,• 

 purpureo-fuscd, zona albd unicd conspicud eingulatd ; 

 varicibus fuscescentibus, granulis a/bidis ; aperturd 

 or 'it, i. utrinque canaliculatd, superne preecipue ; labro 

 intus denticulato, albo. 



The white-banded Ranella. Shell depressly ovate, 

 spire rather short, acuminated ; varices round ; 

 whorls sharply angled, encircled with rows of 

 strong granules, the interstices between which are 

 smooth, granules upon the angle larger; purple- 

 brown, encircled with a single conspicuous white 

 zone, granules white ; aperture ovate, canaliculated 

 at both ends, the upper especially ; lip denticu- 

 lated within, white. 



Sowerby, Jun., Conch. Illus., Ranella. f. 14. 



Hab. Panama (found in coarse sand at the depth of ten 

 fathoms) ; Cuming. 



The Ranella nana is also a purplish shell encircled 

 with a conspicuous white zone ; care must therefore be 

 taken to distinguish this species by its uniform granu- 

 lated surface. 



This species, like the Ranella affinis, is disposed of 

 by M. Kiener, who seems to be totally unacquainted 

 with it, as a variety of the Ranella gi anifera. 



July 1844. 



