Plate, Fig. 279 to 317. Names (see below) are as used in the 1842 text.
Date 1842
Source 'A Conchological Manual', available freely at Project Gutenberg
Author George Brettingham Sowerby II, (1812–1884)
Source: https://commons.wikimedia.org/wiki/File:Conchological_Manual_Plate_14.png

FIG.

Fam. Colimacea.
Helicella.
279. Helix algira. Zonites, Montf. == Zonites algirus (Linnaeus, 1758)
280. Helix citrina. Naninia, Gray. == Naninia citrina (Linnaeus, 1758)
Helicostyla.
281. Helix epistilum = Helicina platychila (Megerle von Mühlfeld, 1824)
Cochlostyla
282. Bulinus rosaceus; a. apex. = Chiliborus rosaceus (King & Broderip,1831)
283. Bulinus Guadaloupensis; Bulinulus, Leach. = Bulimulus guadalupensis (Bruguière, 1789)
284. Bulinus Lyonetianus. Gibbus, Montf. = Gibbus lyonetianus Pallas, 1780 (extinct)
285. Bulinus lubricus. Cionella, Jeffreys. = Cochlicopa lubrica (O. F. Müller, 1774)
Cochlitoma
286. Achatina virginea. Liguus, Montf. = Liguus virgineus (Linnaeus, 1758)
287. Achatinella, Sw.
Cochlicopa.
288. Polyphemus Glans, Montf.
Cochlicella.
289. Bulinus decollatus, in a young state. = Bulinus affinis Broderip in Broderip and Sowerby I 1832 (?)
Cochlogena.
290. Azeca tridens, Jeffreys. Turbo tridens, Gmelin. = Azeca goodalli (Férussac, 1821)
Cochlodonta.
291. Pupa Uva. = Turbo uva Linnaeus, 1758 = Cerion uva (Linnaeus, 1758)
292. Alæa marginata; Jeffreys. = Pupilla muscorum (Linnaeus, 1758)
293. Vertigo pusilla. = Vertigo pusilla O. F. Müller, 1774
294. Megaspira Ruschenbergiana. = Megaspira ruschenbergiana Jay, 1836
Cochlodina.
295. Clausilia Macascarensis; a, a break, to show the clausium. = Medora macascarensis (G.B. Sowerby I, 1828)
296. Balea fragilis. = Balea perversa (Linnaeus, 1758)
297. Auricula Judæ.
298. Auricula coniformis. Conovulum, Lam. Melampus, Montf. = Melampus coffea Linnaeus, 1758
299. Pedipes Adansonii. = Pedipes pedipes (Bruguière, 1789)
299*. Scarabæus imbrium. = Pythia scarabaeus Linnaeus, 1758
300. Chilina Dombeyana. = Chilina dombeiana (Bruguiere, 1789)
301. Carychium minimum. = Carychium minimum O. F. Müller, 1774
302. Partula Australis. = Phasianella australis Gmelin, 1788 (?)
303. Cyclostoma ferrugineum. = Tudorella ferruginea (Lamarck, 1822)
304. Cyclostoma Involvulus. Cyclophorus, Montf. = Annularia lincina (Linnaeus, 1758) (?)
305. Nematura Deltæ. = Stenothyra deltae (Benson, 1837)
306. Helicina major. = Alcadia major (Gray, 1824)
307. Operculum of the same.

Fam. Lymneana.
308. Limnæa stagnalis. = Lymnaea stagnalis (Linnaeus, 1758)
309. Limnæa auricularia. Radix, Montf. = Radix auricularia (Linnaeus, 1758)
310. Limnæa castanea. Physa, Drap. = Physella acuta (Draparnaud, 1805)
311. Planorbis corneus. = Planorbarius corneus (Linnaeus, 1758)
312. Planaria niteus, (from Lea.)

Fam. Melaniana.
313. Melania subulata. Melas, Montf. = Eulima glabra da Costa, 1778
314. Melania prærosa and Melania monodontoides. Anculosa, Say. = Leptoxis praerosa (Say, 1821) and Leptoxis monodontoides Conrad (?)
315. Melanopsis costata. Faunus, Montf. = Melanopsis costata (Olivier, 1804)
316. Pirena terebralis. = Faunus ater (Linnaeus, 1758)
317. Pasithæa striata, (from Lea.) = Pasithea striata Lea, 1833 = Onoba semicostata (Montagu, 1803) (?)