CEPHALOPODA. 



47 



Toxoceras. D' Orb. — Shell rnany-charabered. in form 

 a curved bow, at no time de- 

 scribing a spiral : the last cham- 

 ber occupies a large space : the 

 mouth is very slightly oblique, 

 the partitions symmetrical, with 

 six lobes : the siphuncle dorsal 

 and connected. — 19 species, 

 fossil. 



Bag elites. Lam.— Shell straight, cylindrical, some- 

 times slightly compressed, and somewhat conical, par- 



titions sinuous, transverse, a little distant : the upper part 

 destitute of divisions, and probably held the body of the 

 animal. Siphuncle at the margin. — 11 species, fossil. 



These fossils are abundant in the limestome of Valognes 

 in Xomiandy. Mantell calls them straight Ammonite-. 



Ttepjlites. Mont.— Shell 

 spiral, turret ed, with con- 

 tiguous whorls, all apparent : 

 partitions sinuous, with six 

 lobes, the dorsal the longest : fy^^^^Pjjj Sj^ 

 mouth roundish : the siphuncle 4BB^ ~ - z 



either a: the edge -r ::<:■: z: the " 



base of the whorls, and con- Twrr&ta 

 nected. — 27 species, fossiL 



These curious fossils are found in Kent and in France 



