122 UNIVALVES. — TURBO. 



Family 5. — With the exterior ribbed or grooved. 

 Canaliculatus — Grooved. Sparverius — Pearly -moufk'd. 



Setosus — Leopard. Spenglerianus — Spengler's. 



Family 6. — With the exterior somewhat spinous. 

 Chrysostomus — Golden-mouthed. Aculeatus — Painted. 

 Tectum-persicum — Little pa- Stellatus — Spined. 



goda. *Arniatus — Armed. 



Pagodus — Pagoda. Rugosus — Rugged. 



Calcar — Spur. Cornutus — Large-horned. 



Stellaris — Starred. Radiatus — Radiated. 



Moltkianus — MoltJcian's. 



Mitiute Shells. 

 *Semicostatus — Ribbed. *Labiosus — Lipped. 



*Ruber — Red. *Ulvae — Sea-weed. 



*Vitreus — Glassy. *Ventiosus — Bellied. 



*Punctura — Punctured. *Subumbilicatus — Yellozi'. 



*Arenanus — Satid. *Cingillus — Girdled. 



*Unifasciatus — Banded. *Interruptus — Streaked. 



*Nivosus — White. *Semistriatus — Semi-striated. 



Albulus — Pellucid. 



Division TII. — Shell umbilicated and solid. 

 Family 1. — With the umbilicus toothed. 

 Pica — Magpie. Nodulosus — Nodulous. 



Family 2. — The umbilicus without teeth. 

 Dentatus — Toothed. Diadema — Diadem. 



Muricatus) — Prickly. Undulatus — Waved. 



*Auricularis — Eared. Argyrostoraus — Silver-mouth. 



*Vinctus — Brown-banded. Margaritaceus — Pearly. 



*Q,uadrifasciatus — Four-banded. Porphyrites — Porphyry. 

 Sanguineus — Scarlet. Mespilus — Medlar, 



Atratus — Black-grained. Granulatus — Granulated. 



Anguis — Snake. Cinereus — Ash-colour'' d. 



Torqnatus — Thready. 



