OLIVA. 



Species 46. (Mus. Cuming.) 



Oliva Gii.\ciLis. Oliv. testa gracili-fimformi, bast triin- 

 catii, Terebdliformi, ipira elomjalo-exsertd, atifractu 

 ultimo brevi, aperturam versus descendeiite, columelld 

 arcuata, superne callosd, pUcis subcotitortis ; alba, 

 rufescente-fusco sparsim et in-effulariter reticulata, 

 zona spadiceo-fuscd ad basin ciiigulatd, spird callosd, 

 parum pictd, columelld et apertura fauce albis. 



The slender Olive. Sliell slenderly fusiform, trun- 

 cated at the base, Terebellum-shaped, spire elongatcly 

 exserted, last wborl short, descending towards the 

 apertiu'c, cohmieUa ciured, callous at the upper part, 

 plaits somewhat tmsted ; white, sparingly and irre- 

 gularly reticulated with red-brown, encircled with a 

 fawn-brown zone round the base, spire callous, but 

 little painted, columella and interior of the aperture 

 white. 



Broderip and Sowerby, Zool. Journal, vol. iv. p. 379. 



Hab. Xipixapi, West Columbia (in sandy mud at a depth 

 of about nine fathoms) ; Cumiug. 



Remarkable for the descending convolution of the last 

 whorl, which gives a prolonged appearance to the spire, 

 whilst the shell, being light and broadly tmncated at the 

 base, partakes of the form of Terebellmn. The net-work 

 colouring is extremely partial in its distribution. 



Species 47. (Fig. «, b, Mus. Cuming.) 

 Oliva cixcta. Oliv. testa ovatd, tenuicidd, injlatd, basin 

 versus effum, spird brevi, columelld medio depressd, 

 plicis calloso-coiitortis, aperttird subpatuld; olivaceo- 

 cimred, fusco undique obscure minute punctatd, strigis 

 brevibus perpaueis infra suturas, fascid angustd satura- 

 iiore in medio cingulatd, columelld albidd, fusco zonatd, 

 apertura fauce fused. 

 The girdled Olive. Shell ovate, rather thin, inflated, 

 effused towards the base, spire short, columella de- 

 pressed in the middle, plaits callously distorted, mouth 

 rather wide open ; olive-ash, obscurely minutely dot- 

 ted throughout with brown, with a few short brown 

 streaks beneath the sutures, and encircled with a nar- 

 row darker band round the middle, columella whitish, 

 zoned with brown, interior of the aperture brown. 



There is a strong apparent resemblance between this 

 species and 0. Indusica, but they differ materially on com- 

 parison. 



Species 48. (Mus. Coming.) 



Oliva biplicata. Oliv. testd ahbreviato-ovatd, crassd, 

 obesd, longitudinaliter substriatd, spird brevi, columelld 

 arciiatd, lavi, superne callosd, ad basin bipUcatd, 

 apertnrdbasi effusd ; ccerulescente-grised, suturisfuscis, 

 columelld basique intense violaceis, apertura ctervles- 

 cente-grised, margine violaced. 



The two-plaited Olive. Shell abbreviately ovate, 

 thick, stout, slightly striated longitudinally, .spire 

 short, columella arched, smooth, callous at the upper 

 part, two-plaited at the base, aperture effused at the 

 base ; bluish-grey, sutures brown, columella and base 

 deep violet, aperture blue-grey, violet at the edge. 



Sowerby, Tankerville, Cat. App. p. 33. 



Uab. Monterey, CaUfornia (in the sands at low water) ; 

 Hinds. 



Well distinguished by its short obese growth, and two 

 basal columellar plaits. 



Species 49. (Mus. Cuming.) 



Oliva kaleontina. Oliv. testd oblongo-cijlindraced, 

 spird exsertd, plicis columellaribus parviusculis ; pnr- 

 purascente-spadiced, rufo-castaneo interrupte macidatd 

 et variegatd, maculis oblongo-quadratis infra suturas, 

 columelld et apertura fauce furpnrascente-aWm. 



The woven Olive. Shell oblong-cjdindrical, spire ex- 

 serted, columellar plaits rather small ; purple-fawn, 

 inteiTuptedly spotted and variegated with reddish- 

 chestnut, with oblong-square spots beneath the 

 sutures, columella and interior of the aperture 

 purphsh-vvhite. 



Ddclos, Mon.01iv.pl. 8. f. 7, 8. 



Eab. Bay of Guayaqiul and Gallapagos Islands (at a 

 depth of from six to twelve fathoms) ; Cuming. 

 There is a peculiarity in the form and colom-ing of 



this species which appears constant, and renders it easy 



to be recognized. 



Octobe 



