110 UNIVALVES* — MUREX. 



Sp'inosns— Spiny-frog. Lampas — Granulated. 



*Gyrinus — Whirled. Scrobilator — Violet-throated. 



Bufonius — Toad-shap'd. Reticularis — Retictdated. 



Family 2. — <With two suhalternate varices. 

 Argus — Argus. Candisatus — Mottled. 



Olearium — Oil-jar. Maculosus — Spotted. 



Rubecula — Footman. Spengleri — Spengler's. 



Femorale — Triangular. Pyrum — Pear. 



Lotorium — Angulated. Clavator — Cluh-shap'd. 



Pileare — Nodulous. Caudatus- — Caudated. 



Dolarium — Narroiv-helt» 



Family 3. — With a single varix. 

 Farthenopus — Tawny-yellow. Clandestinus — Double- 1 ipp'd. 

 Cutaceus — Rough-sldn. Lyratus — Lyre-shap' d. 



Division V. — Shell with unequally gibbous whirls, 



DECUSSATED RIBS, AND THE APERTURE SURROUNDED 

 BY A THIN DILATED MEMBRANE. 



Anus — Grimace Whelk. Mulus — Mule. 



Division VI. — Shell somewhat spinous, and without 

 A beak. 



Ricinus — Spur. U'l^^ocastannm-Horse-chesnut. 



Nodus — Chesnut. Sacellum — Corded. 



Neritoideus — Mulberry. Nodatus — Knobbed. 



Fimbriatus — Sealskin. Lacerus — Carinated. 



Hystrix — Porcupine. Virgatus — Nodulous. 



Mancinella — Mancinella. Columbarium — White- belted. 

 Senticosus — Cancellated. 



Division VII. — Shell nodulous, or longitudinally 



plaited, with a short BEAK. 



Plicatus — Plaited. Undatus — Waved. 



Morbosus — Diseased. Fiscellum — Short-beak' d. 



Consul — Fentricose. Dubius — Doubtful. 



Fenestratus — Latticed. 



