259. 

 260. 

 261. 

 262. 

 263. 

 264. 

 265. 

 266. 

 267. 

 26S. 

 269. 

 270. 

 271. 

 272. 

 273. 

 274. 

 275. 

 276. 

 277. 

 278. 

 279. 

 280. 

 281. 

 282. 

 283. 



rubiginosa, Reeve. 284. 



rubra, id. 285. 



rubricata, id. 2S6. 



rubritincta, id. 287. 



rugosa, Soto. 288. 



rupicolor, Reeve. 289. 



Riippellii, id. 290. 



rustica, id. 291. 



sanguisuga, Lam. 292. 



Savignii, Payr. 293. 



scabriuscula, Gray. 294. 



Schroeteri, I)esh. 295. 



sculptiiis, Reeve. 296. 



scutulata, Lam. 297. 



semen, Reeve. 298. 



semicostata, Lam. 299. 



semifasciata, id. 300. 

 semiferruginea, Jonas. 301. 



Senegalensis, Reeve. 302. 



serpentina, Lam. 

 Sinensis, Reeve. 

 Solandri, id. 

 solida, id. 

 solidula, id. 

 speciosa, id. 



303. 

 304. 

 305. 

 306. 

 307. 



51 



sphserulata, Martyn. 

 spicata, Reeve, 

 Stainforthii, id. 

 stigmataria, Lam. 

 striatula, id. 

 strigata, Swain. 

 subulata, Lam. 

 sulcata, Kiener. 

 suturata, Reeve. 

 Swainsoni, Brod. 

 tabanula, Lam. 

 taeniata, id. 

 telescopium, Reeve, 

 terebralis, Lam. 

 tessellata, Martyn. 

 testacea, Swain. 

 texturata, Lam. 

 Ticaomca, Reeve. 

 tornata, id. 

 Tornatelloides, id. 

 tristis, Swain. 

 tuberosa, Reeve. 

 tumida, id. 

 turben, id. 



308. tm-gida, Reeve. 



309. turriger, id. 



310. tusa, id. 



311. typba, id. 



312. undulosa, id. 



313. ustulata, id. 



314. Vanikorensis, Quoy. 



315. variabilis, Reeve. 



316. variata, id. 



317. variegata, id. 



318. venustida, id. 



319. versicolor, Martyn. 



320. verrucosa, Reeve. 



321. vexillum, id. 



322. virgata, id. 



323. virgo, id. 



324. vittata, Swain. 



325. vulpecula, Lam. 



326. vultuosa, Reeve. 



327. Woldemarii, Kiener. 



328. Zebuensis, Reeve. 



329. zelotypa, id. 



330. Ziervogeliana, Kiener 



331. zonata, Marry att. 



Figure. 



Mitra Staixforthii. Plate 3. Fig. 13. — An extremely rare species from, 

 the collection of Thomas Norris, Esq. 



Genus 4. MARGINELLA, Lamarck. 



Animal ; disc large, thin, widely expanded behind ; mantle ex- 

 tending over the shell in two lobes, by which it is nearly enveloped, 

 sometimes furnished with filaments ; head fiat, small, with a 

 pair of short tentacles, behind which are the eyes ; respiratory 

 siphon cylindrical, very short. 



Shell; ovately oblong or pyriform, emarginated at the base, spire 

 short, more or less depressed; aperture oblong, often equalling 

 the length of the shell ; columella plaited nearly equally ; outer 

 lip rolled back and solidified. 



Regarding the general aspect of the Marginella;, it is not surprising that 

 Linnseus should have referred them to the genus Volwta ; the shell differs,, 



h2 



