UNIVALVES, — MUREX. 99 



gal, Straits of Magellan; the European, northern, and 

 southern seas; India, the Mediterranean, Adriatic, and 

 Atlantic. 



This genus derives its name from many of its species 

 being rough, like the sharp crags of a rock. 



MUREX. 



A. — Spinous, with a produced beak. 



Haustellum — Snipers Head. Pomum — Apple-shaped. 



Tribulus — Thorny Woodcock. Decussatus — Decussated. 

 Cornutus — Horned Snipe. Triacanthus — Triple-spined. 



Brandaris— r^ornz/ Snipe's Head Melanamathos — Black-spined. 

 Trunculus — Antique Purpura. Radix — Root. 

 Candidus — White. Fasciatus — Banded. 



B. — Suture expanding into crisped foliations; beak ab- 

 breviated. — Purpura. 



Ramosus — Branched. Ve^-sicolor — Red and White. 



Foliatus — Foliated. *Erinaceus — Urchin. 



Scorpio — Skeleton. Striatus — Striated. 



Saxatilis — Endive Shell. Tripterus — Subtriangular. 



Diaphanus — Pellucid. Sacellum — Corded. 



Cichoreum — Succory. Motacilla — Wagtail. 

 Triqueter — Three-fiamed. 



C. — With thick, protuberant, rounded sutures. 



Lyratus — Lyre. Femorale — Gadroon-whelk. 



Rana — Frog. Cutaceus — Rough-skin. 



Gyrinus — Round-mouthed. Lotorium — Hog's Snout. 



Affinis — Turgid. Pileare — Hairy. 



Lampas — Swiss Trowsers. Bufonius — Foolish. 



Olearium — Oil Jar. Pyrum — Pear. 

 H 2 



