118 CATALOGUE OF CEPHALOPODA. 



b. Broken, or young ? Wings very slightly expanded, very 

 thin, and cavity very small, shallow. Paris. Presented 

 by J. E. Gray, Esq. 



** Lateral Expansion none. 



2. Beloptera Levesquei. 



Shell oblong, elongate, arched, narrow, cylindrical ; three-keeled 



in front ; beaked, blunt, and striated behind. 

 Beloptera Levesquei UOrb. et Feniss. Ceph. Acet. t. 20. f. 10. 12.; 



HOrb. Moll Viv. et Fos. i. 307. t. 11. f. 5. 7. 

 Fos. Paris Basin. 



3. Beloptera anomala. 



Shell oblong, elongate, depressed, arched, concave, with two di- 

 verged ridges above, behind blunt. 



Beloptera anomala Sow. Min. Conch, vi. 184. t. 591. f. 2. 1828; 

 UOrb. Moll. Viv. et Fos. i. 309. t. 14. f. 8. 10. 



Fos. London Clay. 



Fam. vlti. belemnittd^. 



Animal elongated ? only known fossil. 



Shell internal, (horny or) calcareous ; the apex conical, chambered. 

 Chambers concave, simple, pierced with a marginal siphon on 

 the ventral side ; sometimes covered externally with concentric 

 layers, forming a more or less elongate, subcylindrical, conical 

 style. 



Belemnitidaj Owen, Trans. Zool. Soc. ii. 1836; UOrb. Moll. Viv. 

 et Fos. i. 443. 1845. 



Onychoteuthidfe (pars) Gray, P. Z. Soc. 1847, 206. 



Cephalopodes polythalmes (pars) Lamck. Hist. ed. 2. xi. 268. 



Belemnomorpha Bronn, Gesch. der Nat. iii. 536. 



Synopsis of the Genera. 



A. Shell conical, naked, not covered with any externally deposited 



Coat. 



1. Cokoteuthis. Shell with strong longitudinal keel on the 

 middle of the back. 



