BELEMNITIDJE ! ACTINOCAMAX. 
121 
Actinocamax Milller , Trans. Zool. Soc. ii. 64. 1823 ; Voltz , Belemn. 
35. 1830; Blainv. Belemn. 34. 1827. 
Belemnitella D'Orb. Bull. Soc. Geol. 1841, Paleont. univ. 1846, 
Moll. Viv. et Fos. i. 447. 
Act. inocamax (pars) Voltz , Ann. Sci. Nat. xiii. 354. 1840. 
Belemnites Breyn. Polyth. 41. 1732; Lamck. Syst. An. s. V. 104. 
1801, (B. paxillosa) ; Mont/. C. Syst. 383. 1808. 
Belemnites (pars) Lamck. Hist. 16. 
Echinus (spine) Beudant , Ann. Mus. xvi. 1810. 
1. Actinocamax verus. 
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 Muller, 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. Conch, vi. 205. t. 600. f. 6, 7. 
1829. 
B. lanceolatus So?i. Mem. Conch, v. 208. t. 600. f. 8, 9. 1829, not 
Schloth ; Pusch, Pol. PaUon. 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, Belem. 35. 1830. 
Belemnitella Galliennei D'Orb. 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. Gray, 
Esq. 
2. Actinocamax paxileosa. 
Style elongate, subconical, rugose, cylindrical, and slit in front, 
with ramulose flattened grooves on the sides, m any-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 Faiijas St. Pierre, 127. t. 32. f. 3. 
Belemnites paxillosa Lamck. Syst. A. s. V. 104. 1801. 
Gr 
