TURRITELLA 



Species l(i. (Mus. Banks). 



TuRRlTELLA coNSTRiCTA. Tufr. testd turrltd, mluris 

 profundis, anfractibua duodecim ad quaiuordecim, hi- 

 cariiiatis, cariiiis remote didantibus, inlerslitio concavo ; 

 sordiJe alba. 



The tied Turritella. Shell turreted, sutures deep, 

 whorls twelve to fourtccu iu number, two-keeled, 

 keels widely distant, the interstice being concave ; 

 dead white. 



JIab. ? 



Three s])eciraens of this species, not hitherto described, 

 are preserved iu the Banksian collectiou of the LinuEeau 

 Society. 



Species 47. (Mus. llauley.) 



Turritella fascialis. Turr. testa lanceolato-acumiuatd, 

 gracillimd, anfractibus octodeclm, convexis, exiliter 

 quadr'dirath, suturis snbcontractis ; lutescente, aii- 

 fradimm. parte superiori rubido-famiatd. 



The banded Turritella. Shell lanceolately acumi- 

 nated, very slender, whorls eighteen in number, con- 

 vex, faintly four-ridged, sutui-es a little contracted ; 

 yellowish, upper part of the whorls banded with dull 

 red. 



Menke, ? 



Hnb. liny of Montija, Central America (in coarse sand at 

 the depth of seven fathoms) ; Cuming. 



Distinguished by its slender erect form 

 beneath the sntures. 



id ruddy band 



Species 48. (Mns. Belcher.) 



TuRKiTKLLA FASTifiiATA. Tiirr. testd ijraciUiiiio-subidaid, 

 ti'iiiiiriih!, aiifrdctibits octodecim ad rii/iiiti, siipcnir 

 iviitrai-tis, d,r/iribiis, deinde rotuudati'i, nudiquf mtb- 

 lil'miiM- lirtiik et fitfiatis, apicem versiix bicariuf/tis ,- 

 riotaceo alboque pallide variegatd, strigis fiMcemeidibit-i 

 obUquis, liris obscure fitsco pmictaiis vel articHlatk. 



The minaret Turritella. Shell very slenderly sub- 

 ulate, rather thin, whorls eighteen to twenty in 

 number, contracted round the upper part, slanting, 

 then rounded, very tinely ridged and striated, tw.i- 

 keeled towards the apex ; variegated with i>alr vid.t 



and white, and oblique brownish streaks, ridges 

 dotted or articulated with light l)rown. 



Adams and IIeeve, Moll. Voy. Samarang. 



Ilab. China Seas ; Belcher. 



The oblique clouded streaks of ]iainting are character- 

 istic in this species. 



Species 49. (Mus. Cuming.) 



Turritella erosa. Turr. testa turritd, anfractibus de- 

 cern ad duodecim, s?tbplam-conveTis, spiraliter quadri- 

 sulcatis, sidcis angustis, subprofundis ; fuscescerde, 

 infra snturas albicanfe. 



The eroded Turritella. Shell turreted, whorls ten 

 to twelve in immbcr, rather flatly convex, spirally 

 foui--grooved, grooves narrow, rather deep ; light 

 brown, whitish beneath the sutures. 



Coutuouy, Bost. Jomn. Nat. Hist., vol. ii. p. 103. pi. 3. 

 f. 1. 



Hab. Massachusetts Bay, United States (found in sto- 

 machs of fishes) ; Gould, De Kay. 



Generally more or less eroded, the apex being semi- 

 transparent and somewhat papillary. 



Species 50. (Mus. Belcher.) 



Turritella monilifera. Turr. testa acmninato-pyra- 

 midali, basi depresso-concavd, et acute angulatd, an- 



i„(l,', 



latiusculd infra suturas 



iiieiliii cni/riiris, driiidi' bi-liralis ; rosaceo-albd, carina 

 piiiirli.s (li.slitidiljus obliquin rufescente-fuscii ornatd. 



The necklace Turritella. Shell aeumiuately pyra- 

 midal, depressly concave and sharply angled at the 

 base, whorls fifteen in number, with a broad keel 

 beneath the sutures, concave in the middle, then 

 two-ridged ; pinkish white, keel ornamented witli 

 distant obliijue red-brown dots. 



Adams and Reeve, Moll. Voy. Samarang. 



Ilab. China Seas ; Belcher. ^ 



The only painting in this species, beyond its dehcatc 

 violet-pink hue, consists in the necklace-like row of red- 

 brown dots upon the keel. 



June, 1849. 



