LITUIDiE : SPIRULIROSTRA, BELOPTERA. 
117 
shell, rather produced on each side in front, and produced be- 
hind into an acute conical tail, leaving a small concavity over 
the tip in front of the arch of the whorls. 
Spirulirostra UOrb. Ann. Sci. Nat. xvii. 362. t. 11. f. 16. 1842, 
Moll. Viv. et Fos. i. 312. ; Desk, in Lamck. Hist. xi. 248. 
1. Spirulirostra Bellardii. 
Spirulirostra Bellardii D'Orb. Ann. Sci. Nat . xvii. 302. t. 11. f 
16., Moll. Viv. et Fos. i. 312. t. 15. 
Fos. Middle Tertiary, Turin. 
3. BELOPTEKA. 
Animal — — * ? only known fossil. — Shell calcareous, 
conical, straight, or slightly curved, chambered; chambers pierced, 
with a siphon on the ? edge. Enveloping case elongate, sub- 
cylindrical in front, and sometimes winged on the sides, ending 
in a blunt beak at the hinder end. 
Fos. Lower Tertiary formations. 
Beloptera Deshayes , MS, Fncy. Meth. ii. 135. 1830, in Lamck. 
Hist. xi. 243. ; Desk. MS. in Blainv. Malac. Supp. 621. t. 11. f. 
8. 1825, Mem. Belemn. 3. f. 3. 1827 ; Sow. Min. Fos. t. 591. ; 
D' Orb. et Feruss. Cephal. Acet. t. 3. f. 7. 9. t. 21. f. 11, 12. 1839, 
Moll. Viv. et Fos. i. 308. 
Sepia species D' Orb. Sp Feruss. Tab. Meth. Ceph. 67. 1825. 
Sepia (subgenus) Gray , Proc. Zool. Soc. 1847, 205. 
* Lateral Expansions distinct. 
1. Beloptera belemkitoidea. 
Shell oval, oblong, curved, expanded on the sides ; above convex, 
beneath concave ; beak blunt, straight. 
Beloptera belemnitoidea Blainv. Malac. Supp. 621. t. 11. f. 8. 
1825 ; JDal. Sci . Nat. xl. viii. 290. t. 20. f. 8.; Desk. E. M. ii. 
135., Fos. Paris , 762. t. c. f. 4, 5, 6. ; H Orb. Moll. Viv. et Fos. 
i. 808. t. 14. f. 1. 4. 
Beloptere Deshayes Blainv. Belemn. t. 1. f. 3. 
Sepia Parisiensis HOrb. Sf Feruss. Tab. Ceph. 67. 1825, Ann. Sci . 
Nat. ii. 482. vii. 57. 
Beloptera Parisiensis D'0?b. Gray , P. Z. Soc. 1847, 205. 
Dent de Poisson Guet. Mem. v. t. 2. f. 11, 12. 
Beloptera Belemnoidea Blainv. 
Fos. Paris Basin. 
a. Adult, with large wing-like expansion and deep cavity, 
Paris. Presented by J. E. Gray, Esq. 
