( 36) 



DIVISION XXV. CONTORT WE- 



GENER A, 



i. SiLIQUAMA. Brug. M. 



Tube attenuated pos- 

 teriorly, sometimes twist- 

 ed in a spire at the base, 

 open at the anterior end, 

 with a longitudinal cleft 

 througbout its whole 

 length. (1) Fig. 132. 



2. Serpula. Lin. M- 



Tubes grouped or so- 

 litary, adherent, with a 

 round, simple, terminal 

 opening. (2) Fig 130. 



3. Vermilia, Lam. M. 



Tube cylindrical, atte- 

 nuated at the posterior 

 end, more or less twisted, 

 and affixed to marine 

 bodies ; opening round, 

 furnished with a beak, 

 and frequently with from 

 one to three teeth. (3) 

 Fig. 129. 



An orbicular, calca 

 reous ? simple operculum 



4. Clymene. Savigny. 

 M. 



Tube thin, open at 

 each end, incrusted with- 

 out with sand and frag- 

 ments of shells. (4) 



(J) When the animal has left its shell, we sometimes find transverse septa ; the 

 lateral cleft is sometimes very indistinct. Indian Seas, floss, at St. Clement de 

 iaPlaie s Grignon, 



(2) Foss. in the London Clay, Woolwich Loam, and Green Sand, in Italy, at 

 Dax, Grignon, Bayonne, Montbart, Mans, Seez, Touraine. 



(3) Foss. in Chalk Marl, Green Sand, Upper Oolite. 



(4) The only known species is from the Red Sea. The tube of the J rente ola of 

 Savigny, found in the sands of the European seas, is but imperfectly known . 



