SEPIAD^: SEPIA. 
97 
lower part of tlie siphuncle ; the cervical part under the front of 
the shell, with longitudinal central ridge fitting into a groove on 
the back. — Head very large, wider than long, without any crest 
or cervical plaits. Eyes large, with an inferior eyelid, and a 
lacrymal opening in the front of the folds of the eyelid. Ear at 
the lower part of the globe of the eye. Buccal aquiferous 
openings six, between the base of the arms and the lips ; buccal 
membrane seven-lobed, the two lower lobes least marked.— 
Sessile arms short, strong ; dorsal pair compressed, lateral pair 
depressed, third pair with a membranous crest ; protecting 
membrane of the cups very short; cups spherical, fleshy, oblique 
peduncled, in four rows ; fourth pair free, rest united by a 
slight web at the base. Tentacular arms entirely retractile, 
long, slender ; terminal club large, with an external fin ; horny 
ring convex externally, contracted above and below. — Siphuncle 
large, short, without any band at the junction to the head, and 
with a large internal valve.- — Shell (Sepiotaire Blainv.) em- 
bedded in the back of the animal, as long as the body, calcareous, 
depressed, ovate or oblong, externally convex, rugose, hard, 
with a horny edge and acute tip. The cavity is filled with very 
oblique layers of a cellular spongy substance, sometimes leaving 
a small, simple, conical cavity under the apex. 
Sepia Plinius. 
Sepia sp. Linn. Cuvier , Anat. Comp. 1800, Peg. Anim.n. 365. 1817. 
Sepia Lamck , ' Syst. 59. 1801 ; Blainv. Malac. 1825 ; Gray , P. 
ZogI. Soc. 1847, 205.; HOrb. Moll. Viv. et Fos. i. 261. 1845. 
Octopodia sp. Schneider. 
Saepia Dumeril , Zool. Anat. 
Shell. Beloptera A. Blainv. Malac. 621. 1825, Belemn. 110. 1837. 
Sepiostera Desh. Lyell , Princ. Append. 40. 1833. 
Sepiostaria^/amy. Belemn. ;Voltz, Mem. Soc. Strasb. 1830. 
Belosepia Voltz, Belemn . 23. 1830. 
The shells of the species may be arranged as follows : — 
* Shell oblong. 
f Apex very blunt. S. officinalis, n. 1 . Ferussac , Ceph. Crypt, t. 
2. S. latimanus, n. 5. t. 12. f. 1, 2. 
ff Apex produced. S. vermiculata, n. 7. t. 13 A 
S. Rouxii, n. 2. t. 19. 
S. Rappiana, n. 6. 1. 10. S. Bertheloti, n. 12. t. 11. t. 23. 
S. Hierredda, n. 4. t. 13. t. 18. 
S. aculeata, n. 15. t. 5. and t. 25. S. Blainvillii, t. 21. 
S. rostrata, n. 22. t. 8. t 26. 
E 
