84 



2. Galerus, n. 269. 



1. G. chinensis. Calyptrsea sinensis, Deshuyes, t. 130. f. 1; Forbes 

 Sf Hartley, B. Moll. t. BB. f. 8-13. 



3. Crucibulum, n. 270. 



1. C. lignarium. Calyptrsea 1., D'Orb. t. 130. f. 2. 



4. Calyptra, n. 271=Lithe<laphus, Owen. 

 1. C. equestris, Owen, Trans. Zool. Soc. 



5. Trochita, n. 272. 



1. T. radians. Crepidula r., D'Orb. t. 58*. f. 3. 



2. T. pileus. Crepidula tomentosa, Quoy, t. 58*. f. 1. 



3. T. occidentals, n. s. Calyptrsea chinensis, Guilding, t. 130. f. 2. 



? Fain. 20. Phoridce, p. 158. 



Muzzle conical, produced. Foot small, dilated in front. Oper- 

 culum large, horny, subannular. 



1. Phorus, n. 273. 



1. P. conchyliophorus, Gray, t. . 



2. Onustus, n. 274=Astralium, Mas. Berl. 1818. 



1. O. indicus, Adams, t. 122 a. f. 2. 



2. O. javanicus, Adams, t. 122 a. f. 1. 



? Fam. 21. Vanicoroidce, p. 156. 



Foot small, circular, produced in front, with a dilated membrana- 

 ceous expansion on each side. Muzzle conical, wrinkled. Opercu- 

 lum horny, thin, ovate ; whorls few, upper very small. 



1. Vanicoro, n. 256. 



1. V. Souleytana. Narica S., Rectus, 1. 128 a. f. 1. 



2. V. cancellata. Velutina c, Quoy, 1. 103. f. 8. 



e. Shell free, spiral. Gill plumose, exposed j lamina pinnate, spi- 

 rally twisted. Operculum horny, spiral; whorls many, with 

 a thin raised edge. Teeth, central 1, lateral 3 - 3. 



Fam. 22. Valvatida, p. 156. 



1. Valvata, n. 254. 



1. V. cristata, Gruithuisen, t. 126 a. f. 6 ; Sturm, t. 126. f. 3 ; Chiaje, 



t. 126. f. 1 ? 



2. V. planorbis, Sturm, 1. 126. f. 2. 



F. Shell free, spiral. Gills inclosed, on left side of mantle-cavity. 

 Operculum spiral, rarely wanting. Teeth numerous, similar 

 (like Bullidse and Ianthinidse). Muzzle elongate, retractile. 



Fam. 23. Scalariadce=Scalarina, p. 155. 

 Teeth, central none, lateral many, uniform, hook-like, the outer 



