FAMILY 2. COLIMACEA. 69 
the epiphragma. When the animal again comes forth this epiphragma 
becomes loosened or destroyed by pressure and absorption, and is renewed 
as often as required. 
Examples. 
Pl CLAM Figs 1. 
HELIX CHRYSOCHEILUS, Sowerby, Proceedings Zool. Soc., 1841, p. 3. 
Pl. CLXIII. Fig. 2. 
Hexix FLoripa, Sowerby, Proceedings Zool. Soc., 1840, p. 87. 
Subgenus Cochlogena, De Férussac. 
Pl, CLXIII. Fig. 3. and Pl. CLXV. Fig. 16. 
HELIx DECIPIENS, Sowerby, Proceedings Zool. Soc., 1840, p. 96. 
Pl. CLXIII. Fig. 4. 
Heix Fatconari*, Nobis MSS. 
Helicophanta Falconari, Gray, Proceedings Zool. Soc., 1834, p. 63. 
Pl. CLXIII. Fig. 5. 
He.ix cotumBarta, Sowerby, Proceedings Zool. Soc., 1841, p. 19. 
Pl, CEXIM. Fig 6. 
Hzirix MERETRIX, Sowerby, Proceedings Zool. Soc., 1841, p. 20. 
Pl. CLXIII. Fig. 7. 
Hetrx sarcinosa, Broderip, Proceedings Zool. Soc., 1840, p. 121. 
Subgenus Cochlostyla? De Férussac. 
Pl. CLXIV. Fig. 8. 
Herrx Minpana, Sowerby, MSS. Cuming Cab. 
* Mr. Gray kindly published this species some years since, at our request, in honour of 
David Falconar, Esq., of Edinburgh, a zealous and indefatigable conchologist. 
