TUKEITELLA.— Plate YII. 



liter acute etevato-s/riatk, mipenii; cxcarulis, ih-'inih hi- 

 cosiaiis, costis (umidiiiscidis, interstitio concavo, au- 

 fradibm primis parum cosiaiis ; albidd, uulfnlvescmlf, 

 slriis spiralibus purpureo-fusco linclis, atifractibus infra 

 suturas purpureo-fusco macidatis el ititcrJiiiii liiiwlis, 

 hasi violaced. 

 The spotted Tukritella. Shell acuminately turreted, 

 concave and neatly striated at the base, whorls 

 eighteen in number, spirally sharply elevately striated, 

 excavated round the upper part, then two-ribbed, ribs 

 rather swollen, with the interstice concave, the first 

 whorls but slightly ribbed ; whitish or fulvous, spiral 

 striae stained with purple-brown, whorls spotted 

 beneath the sutures and sometimes lineated with the 

 same colour, base violet. 

 Hab. China Seas ; Belcher. 



Although this species approximates so closely to tlie 

 T. bicirujulata in general appearance, it will be found to 

 tliffer on examination. In the earlier whorls of T. biciiii/it- 

 laln the keels are very prominently developed even to the 

 apex ; in the species under consideration they are com- 

 paratively obsolete, the base of the shell is more concave, 

 and is marked by numerous coloured linear strife, which 

 are continued throughout the shell. There is none of the 

 bold blotchy painting which characterizes the T.bicingulala, 

 but the upper margin of the whorls is always distinguished 

 l)y a row of ii'regular red-brown spots immediately beneath 

 th(^ sutures. 



Species 34. (Mus. Hanley.) 



TuRiiiTELLA META. Turr. testd pyramidali-conicd, cras- 

 siusculd, anfractibus quiudecim, plano-declivibus, basi 

 tumidimculis, spiraliter crebristriaiis, anfractuum di- 

 midio superiori eximie sviirregulariter lirato, liris sub- 

 obsoleia granosis ; fulvescenle-albd, purpureo-rufo nia- 

 cuMdet variegatd, liris striisqm purpureo-rufo alboqiie 

 nitide articulatis. 



The conical pillar Turritella. Shell pyramidally 

 conical, rather thick, whorls fifteen in number, flatly 

 slanting, rather swollen at the base, spirally closely 

 striated, upper half of the whorls delicately and some- 

 what irregularly ridged, ridges somewhat obsoletely 

 granosc ; fulvous-white, blotched and variegated with 

 purple-red, ridges and striaj neatly articulated with 

 pur])le-red and white. 



IM>. ? 



L'nac(|uainli-d uilh the T.tidiiihisa of iM. Kiener, I have 



been somewhat inclined to assign tlie present species to it, 



save that it is a stouter shell, the ridges appear on the 



upper half of the whorls only, and he makes no mention 



of their very delicat(-' articulated painting. 



Species 35. (Mus. Metcalfe.) 



Turritella cornea. Turr. testa acuniinato-tumtd,inter- 

 duiii crassiuaculii, ad basin obtuse angulatd, anfractibus 

 <ji(iiideciiii, spinililrr Iriniriiifitis et striatis, anfractui 

 ultinii, el intiTilitui ifrii/iltjiiii, carhiis evanidioribus. 

 Urn parvd ill iiilfrsliliia ,■ fi'rnigineo-castaued, aperlura 

 fauce purpurea tiitcld. 

 The horny Turritella. Shell acuminately-turreted, 

 sometimes rather thick, obtusely angled at the base, 

 whorls fifteen in number, spirally three-keeled and 

 striated, keels of the last whorl, and sometimes of the 

 last but one, fainter, having a small ridge in the inter- 

 stices ; rusty-chestnut, interior of the aperture tinged 

 with purple. 

 Lamarck, Anim. sans vert. (Deshayes' edit.)vol. ix. p. 255. 

 Turbo terebra, Linnseus, (of Fauna Suecica, not of 



Syst. Nat.) 

 Turritella ungu.Unn, Deshayes, (not Turbo unguUiiux, 



Linn.) 

 Turritella Limiei, Deshayes. 

 Turritella communis, Eisso. 

 Hab. Seas of Europe. 



Described by Linnaeus in his ' Fauna Suecica ' under the 

 name T. terebra, which has been adopted by Montagu and 

 other British authors, without considering that the name 

 had already been appropriated in the ' Systema Naturse ' to 

 a foreign species of much larger dimensions. Lamarck 

 described it under the name given above, but from a worn 

 and very obsem'C specimen, and with so brief a description, 

 and no information as to its locality, that until ]\L Kiener, 

 who held the keys of Lamarck's coUection, published the 

 T. cornea, it was impossible correctly to identify the 

 species. M. Deshayes not having obtained access either to 

 Linnaeus's collection for the type of Turbo urigulinus, 

 or to Lamiirck's for that of Turritella cornea, assigned 

 the species imder consideration, agreeably with the views 

 of Dr. Pulteney, to the former of these, wliich is Lamarck's 

 T. fuscata ; and did not observe it to be identical with the 

 T. terebra of the ' Fauna Suecica,' which he proposes to 

 call '/'. Linnei. 



The figure to which Lamarck refers in the ' Encyclopcdie 

 Methoditjue ' in illustration of his T. cornea, is the Mediter- 

 ranean form of the species, which is more elongated and has 

 the sutures more excavated than that found on our own 

 coast. The accompanying figure represents a s])ecimen of 

 the British state of the species dredged at Torbay by 

 Mr. Metcalfe ; and Mr. Hanley possesses a transparent 

 white variety, with the keels more prominently developed, 

 dredged off the Shetland Isles at a considerable depth by 

 Mr. M'Andrcw. Professor E. Forbes informs me, however, 

 that this variety is not uncommon, and occurs in shallows 

 as well as deeps. 



