COLUMBELLA. 



Species 15. (Fig. a, b, Mus. Cuming.) 

 CoLUMBELLA DORS.\TA. Col. testd oblongo-pyramidaU, 

 alba, lineis irregularibus flexuosis confertis cadaneis 

 obtedd, mifractibus octo, Imvibus, superne timji^ulis, 

 ultimi laieribus infatis, dorso prominetite, suturd dii- 

 tinctd ; apeHuru anffustd, flexuosd, alba, periiremate 

 extus incruAmto, inttts deiiliculato, labia columellari 

 excavato. 



The humped Columbella. Shell oblong, pyramidal, 

 white, covered with close-set irregular flexuous lines, 

 whorls eight, smooth, swollen at the upper part, sides 

 of the last whorl inflated, back prominent, suture 

 distinct ; aperture narrow, flexuous, white, peritreme 

 thickened without, denticulated within, coluraellar 

 lip excavated. 



SowERBY, Pro. Zool. Soc. 1832, p. 120. 



Hab. Isle of Muerte and Bay of Guayaquil, West Colum- 

 bia ; Cumiug. 

 Allied to C. gibbenda, but of larger size, having the 



columella excavated in the middle. 



Species 16. (Fig. a, b, Mus. Cuming.) 



This shell, which partakes of the characters of Colum- 



bella and Fleuroioma, has already been described and 



figured under the latter genus, PI. XII. Sp. 106, Pleuro- 



ioraa davvlm. 



Species 17. (Fig- a, b, Mus. Cuming.) 



CoLUMBELLA FUSiFOKMis. Col. testd angiiste fusiformi, 

 basi atlenuatd et rectirvd, spird acwminato-turritd, 

 anfractibus decern ad widedm, septem primis longitu- 

 dinaliter costatis, deinde lavibus, superne concavo-de- 

 divibus, ultimo bituberculato, albo, rufescente-spadiceo 

 lenliginoso ; labia externa refiexa. 



The fusiform Columbella. Shell narrowly fusiform, 

 attenuated and recurved at the base, spire acumi- 

 nately turreted, whorls ten to eleven, the first seven 

 longitudinally ribbed, then smooth, concavely slant- 

 ing at the upper part, last whorl bi-tubercled, white, 

 freckled with reddish-fawn ; outer lip reflected. 



Hinds, Moll. Voy. Sulphur, pi. 10. f. 17, 18. 



Hab. ? 



The longest and most fusiform species of the genus, 

 the spire being sharply acuminately turreted, and the 

 basal canal produced and recurved. 



Species 18. (Fig. a, b, Mus. Cuming.) 



CoLUMBELLA EECURVA. Col. lestd oblmujd, turritd,fulm, 

 spird acuminato-pyramidali, anfradibus decern ad mi- 

 decim, sex primis longitvdinaliler costatis, ceteris 

 serie tuberculorum unicd instrudis, wltimi dorso sub- 

 gibbo, parte infer iori transversim sulcata ; aperturd 

 angustd, canali rectirvo, labia externa rejiexo, valde 

 incmssafo, intus tuberculato. 



The RECURVED CoLUMBELLA. Shell oblong, turreted, 

 fulvous, spire acuminately pyramidal, whorls ten to 

 eleven, first six longitudinally ribbed, the rest fur- 

 nished with a single row of tubercles, back of the 

 last whorl rather gibbous, lower part transversely 

 grooved ; aperture narrow, canal recurved, outer lip 

 reflected, very much thickened, tubercled within. 



SowERBY, Pro. Zool. Soc. 1832, p. 115. 



Hab. Isle of Plata, South America (in coral sand, at 

 depth of seventeen fathoms) ; Cuming. 



Of more solid structure than the preceding species, less 

 attenuated at the base. 



Species 19. (Fig. a, b, Mus. Cuming.) 



CoLUMBELLA MACULOSA. Col. testd subulatd, albidd, 

 fulvescente-rufo irregulariter maculosa, spird acumi- 

 nato-pyramidali, anfradibus novem ad decern, septem 

 ad octo primis lavigatis, cateris tuberculorum serie 

 unicd corotiatis ; aperturd brevi, canali subrecurvo. 



The spotted Columbella. Shell subulate, whitish, 

 irregularly spotted with fulvous-red, spire acumi- 

 nately pyramidal, whorls nine to ten, the first seven 

 or eight smooth, the rest coronated with a single 

 row of tubercles ; aperture short, canal slightlv re- 

 curved. 



SowERBY, Pro. Zool. Soc. 1832, p. 116. 



Hab. Guacamayo, Central America (in sandy mud); 

 Cuming. 



Chiefly distinguished by its sharply acuminated spire, 

 which is almost of Tcrebra-likc ])roportions. 



Januai-y, 185 



