TURRITELLA.— Plate V. 



presHo-excavatis, deinde bicostatis, coslis protnineniibus, 

 iumidis, planiusculis, distantibus, interditio excavato, 

 suturis mibprofiDide excavaiis ,- fulvo-albidd, rufo-fusco 

 profuse Jlammatd et variegatd, area inter codas parum. 

 pictd, bad et aperturce fauce purpureo-roseis. 



The two-gibbled Turkitella. Shell acumiuately tur- 

 reted, whorls eighteen in number, finely striated, de- 

 pressly excavated round the upper part, then two- 

 ribbed, ribs prominent, swollen, rather flattened, 

 distant, with the interstice excavated, sutures rather 

 deeply excavated; fulvous white, profusely flamed 

 and vaiiegated with red-brown, area between the ribs 

 but little painted, base and interior of the aperture 

 purple-rose. 



Lamarck, Auim. sans vert. (Deshayes' edit.) vol. ix. p. 256. 

 Turritella bimgulata, De Blainville. 



Hab. Porto Praya, Cape de Verd Islands. 



This fine species from the Cape de Verd Islands is dis- 

 tinguished by a pair of conspicuous swoDen keels and a 

 bold profuse style of painting ; the base and aperture are 

 of a peculiar purplish-hue. 



At PI. VII. Sp. 33, is another species very similar to 



this, collected by Ca})t. Sir E. Belcher diu'ing the Voyage 

 of the Sulphur. 



Species 21. (Mus. Cuming.) 

 TcRRiTELLA TORULOSA. TuTT. tedd acunwuito-turnid, 

 crasdusadd, anfractibiis quindedm, rotutidatis, striatis, 

 pr'mim bicostatis, cateris gradatim quadricostatis, costis 

 obsolete granatis, duaitis inferioribus fortioribus ; ful- 

 vesceide-albd, rufo-fusco punctata et exinm jiammidatd. 

 The corded Turritella. Shell acumiuately tun-eted, 

 rather thick, whorls fifteen in number, rounded, 

 striated, first whorls two ribbed, the rest gradually 

 fom--ribbed, ribs obsoletely gi-ained, the two lower 

 ribs always the stronger ; light fulvous wliite, dotted 

 and delicately flamed with red-brown. 

 Kiener, Icon. coq. viv. p. 18. pi. 6. f. 3. 



Hab. ? . 



The whorls are more than usuidly roimded in tliis 

 species, and they are corded with fom- rather prominent 

 ribs, the upper two of which are not developed until the 

 shell has advanced to its ninth or tenth convolution. The 

 painting has a peculiarly dotted cliaracter. 



