808 CLASS XIII. 



Sub-genera : Nassa, Buccinum, Tritonium MUELL. and DESHAYES 

 (species of Buccinum LAM.). Comp. DESHAYES in LAMAKCK Hist, 

 nat. des Ani. s. vert. x. pp. 151, 152. 



Sp. Buccinum undatum L., Encycl. meth., Vers. PL 399, fig. i, BLAINV. 

 Malac. PL 22, fig. 4. (See an anatomical description of this species by 

 CUVIER, Ann. du Mus. xi. pp. 447 457, Mm. s. L Mollusq. No. 17.) 



To Buccinum belongs also the genus Eburna LAM. (with the exclusion of 

 Ebuma glabrata, Ancillaria glabrata SOWERBT). Sp. Buccinum spiratum 

 L., KUMPH. Amb. Rariteitlc. Tab. 49, fig. D, Encycl. meth., Vers. PI. 401, 

 fig. 4. 



Terebra BfiUG. (species from genus Terebra ADANS.), Subula 

 SCHUMACHER, BLAINV. Shell turrite, subulate. Aperture longi- 

 tudinal, mucli shorter than spire, excised at the apex "by a sinus. 

 Columella oblique, plicate ; labrum with margin acute, thin. Oper- 

 culum horny. 



Sp. Terebra maculata LAM., Buccinum maculalum L., D'ARGENVILLE Con- 

 chyl. PI. n, fig. A, Encycl. me"th., Vers. PI. 402, fig. i. 



Conus L. Shell convolute, conical. Spire short, sometimes 

 acuminate, mostly flattened. Aperture narrow, longitudinal, eden- 

 tulous. Columella short. Animal with foot anteriorly truncated, 

 posteriorly attenuate, rotundate, with horny operculum ; head with 

 two tentacles subulate, bearing eyes on the outside towards the 

 apex. 



Sp. Conus imperial-is L., HUMPH. Amb. Rariteitlc. Tab. 34, fig. H, Encyclop. 

 meth., Vers. PI. 319, figs, i, 2, BLAINV. Malac. PI. 26, fig. 5; Conus 

 gloria maris CHEMN., Conch. Tab. 143, figs. 1324, 1325, Enc. meth., Vers. 

 PL 347, fig. 7. A very numerous genus of more than 300 species (accord- 

 ing to DESHAYES, LAMARCK Hist. nat. d. Ani. s. v., sec. ed. xi. p. 7). 

 Beautiful figures of many species are found in the Encycl. meth., Vers. PI. 

 315 347. Almost all are from the tropical seas; many fossil species from 

 the tertiary formations are known. 



Valuta L. (exclusive of many species), LAM. Shell ovate, very 

 often ventricose, with apex obtuse. Aperture longitudinal, excised 

 towards the end by a sinus. Columella obliquely plicate. Ani- 

 mal without operculum. 



Sp. Voluta cethiopica LAM. (Voluta cethiopica L. in part), Encycl. meth., 

 Vers. PL 387, fig. i, Cuv. R Ani., td. ill., Moll. PL 52, fig. i, &c. 



Volvaria LAM. (in part), SOWERBY. 



Species fossil. Comp. REEVE Conchol. Syst. n. pp. 246 248. 



