78 CATALOGUE OF CEPHALOPODA. 



eight very blunt teeth on the higher side ; lower side smooth ; 

 third pair largest. Tentacular arms long, slender ; club lanceo- 

 late ; cups unequal ; ring of the lateral cups armed with sharp 

 teeth on the higher side. Shell oblong, spoon-shaped ; upper 

 part rather narrow and produced. 



Loligo sumatrensis UOrb. $' Fentss. Ceph. Acet. Calmars, t. 13. 

 f. 1—3. 1839; B'Orb. Moll. Viv. et Fos. i. 349. 



Hab. Sumatra. 



b. Shell as long as Back. Fin occupying the Sides of the Body. 



4. SEPIOTEUTHIS. 



Body oblong, rather depressed, subcylindrical. Fins narrow, ex- 

 tending the whole length of the sides of the back. Suspending 

 buttons on the ventral surface, marginal, cartilaginous, linear, 

 enlarged below; cervical ridge linear. — Head large, buccal 

 membrane seven-lobed ; buccal aquiferous openings six ; external 

 ear with a transverse crest, enlarged and curved up in front. 

 — Sessile arms conical, subulate, unequal, finned externally ; 

 cups in two rows. Tentacular arms long, cylindrical ; club 

 enlarged and finned ; cups in four alternated rows, with a thin 

 membrane. — Siphuncle with two central superior bands. — Shell 

 internal, horny, the length of the back, pennate, lanceolate, 

 narrow in front, and with a central keel. 



Sepia sp. Launch. 1812. 



Calmars Seiches (Loligo Sepio'idea) Blainv. Jour. Phys. 1823, 



Malac. 1825. 

 Chondrosepia Leuckart, 1828. 

 Sepioteuthis Ferussac, Tab. Ceph. 1825; D'Orbigny, Moll. Viv. et 



Fos. i. 319. t. 17. ; Desh. in Lamck. Hist. xi. 242. 

 Les Sepioteuthes Blainv. Malac. 



Synopsis of Sections. 



* Buccal membrane provided with cups. 

 ** Buccal membrane without any cups. 



* Buccal Membrane provided with Cups. 



j Shell lanceolate, thickened on the Sides, obliquely up to the 



Shoidder. 



1. Sepioteuthis lunulata. 



Body oval, oblong. Fins very broad, fleshy, most dilated behind 

 the middle of the body. Sessile arms elongate, slender, unequal ; 

 order of length, 3, 2, 4. 1 ; cups depressed, oblique : rings with 



