CIKKHIPEDA. 



37 



FAMILY 1. — Cirrhipeda sedentaria* 



The body of the animal possesses no pedicle, 

 and is enclosed in a shell fixed to marine sub- 

 stances. — There are 6 genera. 



12. Tubicikella. — Shell uni- 

 valve, operculated, tubular, erect, 

 slightly thinner towards the base, 

 having annular transverse ribs, trun- 

 cated at both ends, open at the sum- 

 mit, and closed at the base with a 

 membrane. Operculum with four 

 obtuse valves. Animal rather cylindrical and 

 long. — 1 species only. 



This shell is found buried to the depth of 

 several inches in the fat of the South Sea 

 whale; its operculum and the upper part of 

 the tube being visible. 



13. Coeonula. — Shell 

 rather orbicular, conoid, the 

 extremities truncated, the 

 sides very thick ; inside hol- 

 lowed into radiating cells. 



* Cirripedes Sessiles, Lamarck. 

 D 3 



