OF MOLLUSCA. 1 1 



2. FULGUR. 



Shell like Cassidulus, but spire shorter ; last whorl very large ; 



mouth very open. Teeth ? Operculum very small ovate or 



claw-shaped. 



1. F. canaliculata. 



2. F. Carica. 



b. Operculum none. 



3. COCHLIDIUM. 



Shell very like Cassidulus, but operculum none. Head elongate 

 conical, like a snout, with a very long, exsertile proboscis. Tenta- 

 cula very small, on the side of the mouth. Eyes small, on outer 

 side of their base. Male organ large. Foot ovate, truncated in 

 front. Teeth central, 3-toothed, lateral hooked, versatile. 



1 . C. Tuba. Pyrula tuba, Eydoux, Voy. Bonite, t. 43. 



Fam. II. MURICIDiE, Fleming. 



Head small, truncated. Tentacles moderate. Mantle enclosed. 

 Operculum horny, annular ; nucleus apical or subapical, just within 

 the apex. Shell external ; pillar smooth. 



A. Siphon produced. Canal of shell produced. 



a. Muricina. Shell with three or more varices, often branched ; 

 inner lip smooth ; outer lip often with a tooth-like process in 

 front. Operculum ovate ; nucleus subapical, within the apex 

 (% 7). 



* Hinder part of the edge of the mantle and lip of shell simple, or 

 with a sutural groove. Fj g ; 



1. Murex, Lamk. 



Shell ovate ; spire short, with three or more 

 rounded or spinose varices on each whorl ; mouth 

 ovate ; canal elongate, tubular, spinose externally. 



f Varices distinct, spinose. 



1. M. tenuispinus, t. 6. f. 2. 



2. M. Brandaris, t. 6. f. 3 S, t. 7. f. I, 2. 



ft Varices rudimentary, unarmed. Pyrenella. 



3. M. Spirilla. 



2. Chicoreus. 

 Shell ovate ; spire acute, with three or more often branched or 

 spinose varices on each whorl ; mouth ovate ; canal moderate, bent 

 up to the right. 



