LITUED.SE : LITUUS. 



115 



eular kind of fin on each side. It has been suggested that this 

 may depend on the sex of the specimens. De Blainville's specimen 

 was a female, but the sex of the others is unknown. 



Lituus Brown, Jam. 1756; Humph. MS. 1797. 



Ammonia Gualtieri, 1742 ; Breyn, Pohjth. 17 . 



Pedum Humph. Mus. Colon. 1797, not Lam. 



Spirula Lamck. Syst. 1801, Hist. ed. 2. xi. 2S0. ; Blainv. Anal. 

 Franc, et Strang. Anal, et Phys. i. 369- t. 1837; Gray, Ann. and 

 Mag.'N. Hist. xv. 257. 234. 445. t. ; B' Orb. Moll. Viv. et Fos. i. 

 314. ; Owen, Zool. H. M. S. Samarang, 1848. 



Spirula a. Blainv. Malac. 1825 ; not b and c. 



Spirulsea Peron 8f LeSueur. 



Cornu Ammonis Humph. 



Nautilus sp. Lister, 1685. 



The following names have been applied to the Shells of this 

 genus, but it is impossible to determine to which of the species 

 (if they are distinct) the names belong : — 



Nautilus exiguus Lister, Hist, sive Syn. lib. iv. t. 550. f. 2. 

 Cornu Ammonis Rumph. Thesaur. t. 20. n. 1. 

 Cornu Hammonis le^itinius Klein, Ostrac. 5. sp. 1. t. 1. n. 6. 

 Cornu Hammonis Gem, Monat. Belust. ou Essais Verest. t. 3. f. 8.; 



Martini, Conch. Cab. i. 274. t. 18. f. 1. 

 Lituus minor Brown, Nat. Hist. Jamaica, 398. 

 Nautilus spirula Linne, Syst. Nat. 1767; Schroeter, Einleitung, i. 



13.; Gmel. Syst. Nat. 3371. n. 9.; Schreber, Versuch. i. 1. ; 



Burrow, Elements of Conchol. t. 12. f. 3. 

 Spirula fragilis Lamck. Syst. des An. s. Vert. 102. ; Bosc, Hist. 



Nat. des Coq. v. t. 52. f. 2, 3.; Roissy, Buff, de Sonnin. v. 15. ; 



Mordfort, Conch. Syst. 99.; Schumach. Vers. test. 256.; UOrb. 



Moll, des Antilles, i. 64. n. 16., Moll. Viv. et Fos. i. 315. t. 16. 

 Spirula australis Johnst. Edin. Journ. April, 1828, p. 74. 

 Spirula Peronii Lamarch. Hist. An. s. Vert. vii. 601. n. 1. ; If Orb. 



Tab. des Ceph. 68., Moll, des Canaries, 24. n. 8. ; Blainville, 



Faune Franc. 22. t. 3. u. f. 1.; Sowerby, Genera of Shells; 



Blainv. Nonv. An. du Mus. iii. 18. t. 1. ; Cuvier, Regne Anim. t. 



8. f. 1. ; Potiez et Mich. Gall, des Moll. i. 9. n. 1. ; Reeve, Conch. 



Syst. ii. 296. t. 298. 



* The posterior Part of the Body without any ring, and the last 

 Whorls of the Shell exposed. — Males ? — Spirula. 



1. LlTUtS PROTOTYPUS. 



Spirula prototypus Peron, Voy. Terres Austral, t. 30. f. 4. 1840, 

 cop. Gray, Ann. N.H. xv. t. 15. f. 7. ; D'Orb. Moll. Viv. etFos. 

 t. 16. 2. ; Blainville, Man. t. . f . . ; cop. Gray, 1. c. t. 15. f. 6. 



