BELEMNITID^ : ACTINOCAMAX. 121 



Actinocamax Midler, Trans. Zool. Soc. ii. 64. 1823 ; Voltz, Belemn. 



35. 1830; Blainv. Belemn. 34. 1827. 

 Belemnitella D'Orb. Bull. Soc. Geol. 1841, Paleont. unic. 1846, 



Moll. Viv. et Fos. i. 447. 

 Act. inocaraax (pars) Voltz, Ann. Sci. Nat. xiii. 354. 1840. 

 Belemnites Breyn. Polyth. 41. 1732; Lamck. Syst. An. s. V. 104. 



1801, (B. paxillosa) ; Montf. C. Syst. 383. 1808. 

 Beleuinites (pars) Lamck. Hist. 16. 

 Echinus (spine) Beudant, Ann. Mus. xvi. 1810. 



1. Actinocamax verbs. 



Style elongate, lanceolate, smooth ; trigonal in front ; dilated, de- 

 pressed, and mucronately acuminated behind ; sides with a deep 

 impressed groove, evanescent behind. Shell truncated, radiately 

 ribbed, slit below. 



Actinocamax verus Midler. Trans. Geol. Soc. ii. 64. t. 9. f. 17. 



1823; Voltz, Lehrb. 1839, 522. 

 Belemnites fusiformis Young, Geol. York, 14. t. 14. f. 2.? 1822. 

 B. plenus Blainv. Belem. 59. n. 1 1827, Diet. Sci. Nat. f. 3. ; Desk. 



Ency. ii. 124. ; Bronn, Lethcea, ii. t. 83. f. 14. ; Roemer, Kreid. 34. 

 B. mucronatus (pars) Sonn. Mem. Conck. vi. 205. t. 600. f. 6, 7. 



1829. 

 B. lanceolatus Son. Mem. Conch, v. 208. t. 600. f. 8, 9. 1829, not 



Schloth ; Fusch, Pol. Paleon. 162. ■ Morris, Cat. 177. 

 Belemnitella vera D'Orb. Bull. Geolog. 1842, 359., Paleont. univ. 



t 32. f. 1—6. 1846, Moll. Viv. et Fos. 447. 

 Actinocamax Blainvillei Voltz, Bclejn. 35. 1830. 

 Belemnitella Galliennei UOrb. Bull. Soc. Geol. F. 1842; Brey. 



Polyth. 411. t. 7. f. 15. 1732. 

 Echinus spine Beudant, Ann. Mus. xvi. t. 3. f. 8, 9, 1810^ Park. 



Org. Rem, iii. t. 4. f. 19. 1811. 



Fos. Greensand. 



a. b, c, d. Style only. Folkstone. Presented by J. E. Grav, 

 Esq. 



2. Actinocamax paxillosa. 



Style elongate, subconical, rugose, cylindrical, and slit in front, 

 with ramulose flattened grooves on the sides, many-branched 

 behind ; mucronately acuminated behind. Shell raised ; angle 

 19" or 20". 



Belemnites Breyn. Polyth. 41. t. 7. f. 1—14.; Klein, Tab. Mar. 



30. t. 7. f. 3, 4, 5. 

 Belemnites Favjas St. Pierre, 127. t. 32. f. 3. 

 Belemnites paxillosa Lamck. Syst. A. s. V. 104. 1801. 



G 



