82 



5. Polinices, n. 185. 



1 . P. mammilla. Natica m., Ehrenb. t. 50. f. 5 ; Eydoux, t. 122. f. 3. 



2. P. ? N. Jaime roux, Eydoux, t. 122. f. 1. 



3. P. ? Uber. N. Uber, D'Orb. t. 



6. Mammilla, n. 186. Oper. large. 



1. M. melanastoma. Natica m., Quoy, t. 49. f. 1. 



2. M. melanastomoidea. Natica m., Quoy, t. 49. f. 5. 



3. M. fibrosa. Natice fibreuse, Eydoux, 1. 122. f. 4. 



7 '. Stomatia, n. 191. Oper. very small. 



1. S. Haliotoides. Cryptostoma Leachii, Gray, t. 119. f. 3. 



2. S. zonalis. Cryptostoma z., Quoy, t. 49. f. 6 ; ? Adams, t. 82. f. 2. 



3. S. Cymba. Cryptostoma concavus, Gray, t. 119. f. 3; D'Orb. 



1. 118. f.l. 



4. S. laevigata, Eydoux, t. 122. f. 5. 



5. S. Reevesii. China, Reeves, t. 121. 



? Fam. 16. Velutinidee. 



Mantle edges inflated, folded on the edge into two canals. Muzzle 

 retractile, strong. Tentacules united by a veil. Tongue linear. 

 Teeth, central 1, lateral 3'3, uncinate. Operculum none. 



1. Velutina, n. 255. Gray, Med. Rep. 1821. 



1. V. laevigata. Bulla velutina, Miiller, 1. 109. f. 10. Velutine Ca- 



puloide, Blainv. t. 103. f. 6. 



2. V. Otis, Johnston, MSS. t. 103. f. 8. 



c. Shell attached, irregular. Gills enclosed in a line on left side 

 of mantle-cavity. Foot scarcely fit for walking, end dilated, 

 clavate. Operculum horny, circular, or wanting. Teeth ? 



Fam. 17. Vermetidce, p. 156. 

 Muzzle produced, contractile, not retractile. Tentacula lateral. 



1. Siphonium= Vermetus, part, n. 257- Oper. large, smooth, 

 circular, concave ; scar central, circular, rugose. 



1. V. maximum, Gray, t. 128. f. 2. V. giganteus, Quoy, t. 56. f. 5. 



2. V. Tonganum, Quoy, t. 56. f. 7- 



3. V. reticulatum, Quoy, t. 56. f. 2. 



4. V. carinatum, Quoy, t. 56. f. 1. 



5. V.?? , n. s., Adams, MSS. t. 82. f. 1. 



2. Vermetus, n. 257. Operculum large, rather concave ; whorls 

 many, thin, Avith a thin produced external edge ; scar central, 

 circular, with close, regular, concentric grooves. V. lumbri- 

 calis, Lunik. V. Hindsii. Irregularly twisted, B.M. 



3. Bivonia, n. 258. Operculum rudimentary, small (spiral?). 



1. B. glomerata. Vermetus g., Philippi, t. 58. f. 4. 



2. B. triquetra. Vermetus t., Philippi, t. 58. f. 5. 



3. B. semisiurecta. Vermetus s., Philippi, t. 58. f. 1. 



4. B. subcancellata. Vermetus s., Philippi, t. 58. f. 3. 



