TEDUNCULATA. 



169 



rate valves, two of wliicli are on the sides of the aperture, 

 and the others dorsal. 



Cineras aurita. — The Eared Cineras. Plate XIX. 

 fig. 2. Greenish ash-colour, clouded and streaked with 

 black ; wrinkled towards the base. Inhabits the coast of 

 England. 



Genus 3 VOLLICIFES.— Leach. 



Generic Character. — Body covered by a shell, and sup- 

 ported on a tubular, tendinous, scaly peduncle ; with many 

 tentacular arnns. Shell compressed at the sides, with nu- 

 merous separated unequal valves, thirteen or more in num- 

 ber ; the lower side ones the smallest. 



Pollicipes cornucopia. — The Cornucopia Pollicipes. 

 Plate XIX. fig. 3. Peduncle short, covered with imbri- 

 cated scales, the base of the scales towards the bottom of 

 the peduncle rounded, and pointing upwards. Inhabits the 

 European seas. 



Genus 4.— SCALPELLUM.— Zeac^. 



Generic Character. — Body covered by a shell, and sup- 

 ported by a tubular, scaly peduncle ; multivalve, but the 

 valves never exceeding thirteen in number, concentrically 

 striated, and frequently with a central pointed inclined 

 knob. 



Scalpellum vulgare The Common Scalpellum. Plate 



XIX. fig. 4. Valves rough, the dorsal one compressed ; 

 covered with short hairs ; peduncles short, annulated, and 

 hairy. Inhabits the British seas. 



Genus 5. — ANATIFA. — Bruguiere. 



Generic Character. — Body covered with a shell, sup- 

 ported by a tubular tendinous peduncle ; with long, numer- 

 ous, and unequal tentacular arms, which are articulated and 

 ciliated, and emanating from the summit on one side. Shell 

 compressed on the sides, with five flat valves, the valves 



p 



