BELEMNITID^: BELEMNITES. 123 



4. ACTINOCAMAX SUBVENTRICOSA. 



Shell conical, concentrically rugose. Style elongate, subcylin- 

 drical, smooth, rather trigonal, compressed in front, depressed 

 and mucronate at the tip behind ; lateral grooves flattened, 

 simple, evanescent behind. 



Belemnites subventricosiis Wdlilenh, Act. Upsal. viii. 80. 1821 ; 



Vultz, Beiem. 64. t. 8. f. 1. 

 B. mamillatus Nelson, Act. Holm. 1825, 340., Petref. Siiec. 10. t. 2. 



f. 2.; Hissing, LetJicea Suec. 31. t. 10. f. 7. ; Roemer, Kreid. 84. 

 B. Scaniffi Blainv. Belemn. 61. 1827, Diet. Sci. Nat. f. 6. ; Desh. 



E. M. ii. 124. 

 Belemnitella subventricosa i)'Or&. Paleont. univ. t. 31. f. 7. 12., 



Moll. Viv. et Fas. i. 454. t. 33. f. 7. 12. 



Fas. Chalk. Sweden. 



4. BELEMNITES. 



Shell conical ? • . The externally deposited style with 



an entire margin to the edge of the conical cavity (which 

 covered the shelly cone). 



Belemnites Lister, 1678; UOrh. An. Sci. Nat. xvii. 1842, Paleont. 



Ter. Jur. 1842, Moll. Viv. et Fos. i. 459. 

 Belemnita Fleming, Brit. Anim. 1828. 

 Belemnites (pars) Ehrhart, Bel. Suec. 1727 ; Lamck. Hist, (not 



Syst. 1801). 

 Nautilus Belemnita Gmelin. 

 Histolithis Montf. Conch. Syst. i. 387. t. 97. 

 Acamas Montf. Conch. Syst. i. 1808. 

 Achelois Montf. Conch. Syst. i. 1808. 

 Callirhoe Montf Conch. Syst. i. 1808. 

 Celocis Montf Conch. Syst i. 1808. 

 Chrysaor Montf Conch. Syst. i. 1808. 

 Hibolithes Montf Conch. Syst. i. 1808. 

 Paclites Montf. Conch. Syst. i. 1808. 

 Poradragus Montf Conch. Syst. i. 1808. 

 Thalamus Montf Conch. Syst. i. 1808. 

 ? Platinites Rafn. 

 Actinocamax (pars) Voltz, Ann. Sci. Nat. xiii. 354. 1840, not 



Miiller ; Philips, Hartmann. 

 ? Pseudobelus Blainv. Belemn. 113. 

 Notosiphites and Gasterosiphites Duval. 

 Ocoeli, Notocoeli, and Gastrocoeli D' Orb. Paleont. univ.., Moll. Via. 



et Fos. 

 Teudopsis sp. Deslongchamps^ Mem. des Soc. Norm. v. 72. 1838. 



G 2 



