MOLLUSCA. 829 
Of this shell the animal is known from only imperfect figures, and some 
specimens not entirely perfect. See E. J. Gray Annals of Nat. Hist. xv. 
pp- 257—260, Pl. xv. A mutilated specimen, investigated by Owen in 
1848, has afforded, however, by the anatomical particulars of internal 
structure the certainty that the animal resembles the Sepiacea or Decacera. 
There are two gills, two lateral or venous hearts, an ink-sac, a membranous 
tubular siphon, &c. See R. OWEN in Zoology of the Voyage of H.M.S. 
Samarany, under the command of Capt. Sir EDWARD BrEcHER, Mollusca, 
Part 1. London, 1848, pp. 6—17, Pl. rv. 
Sp. Spirula Peronii Lam., Nautilus spirula L.; the shell has been several 
times figured, as in Rumpu. Amb. Rariteitk. Tab, 20, fig. 1, D’ARGENV. 
Conchyl. Pl. 5, fig. G, G, &e. 
Sepia Lam. (species from genus Sepia L.). Body sacciform, 
depressed, margined on each side by a narrow membrane or longi- 
tudinal fin. A calcareous lamina elongate, dorsal, included in 
mantle. 
Seiche, Dintenfisch, Sea-cat, Ink-fish, Cuttle-fish. The calcareous plate in 
the back consists of many lamin. This part, known as os Sepiw is used 
by miniature-painters for polishing ivory plates and forms a component of 
some tooth-powders. 
Sp. Sepia officinalis L., BRANDT u. RatzEsure Mediz. Zool. 11. Tab. 31, 
fig. 1; GuGrin Lconogr., Moll. Pl. 1. fig. 4, &e. Carus has given coloured 
figures from living animals, Nov. Act. Acad. Ces. L. C, Nat. Curios. X11, 
1824, pp. 313—322, Tab. 28 —32. 
Sepiotcuthis BLAINV., Chondrosepia LEUCK. 
Loligo Lam. Body elongate, pinnate posteriorly on each side. 
An elongate, narrow, horny, lamina at the back, covered by mantle. 
Sp. Loligo vulgaris, Sepia loligo L., Buatnv. Malacol. Pl. 3, fig. 2, Carus 1. 1. 
Tab. 29, fig. 1, &c. 
Ommastrephes D’OrB., Ommatostrephes Lovin. 
Onychoteuthis Licutenst. The longer or all the arms armed with 
horny hooks. 
Onychoteuthis Fabricti Moruer, Sepia loligo Fasr., Fauna Grenl. ;— 
Loligo Banksii, Loligo leptura, Loligo Smithii Leacu in Tuckry’s Expedi- 
tion to the River Zaire. 
Sepiola LEACH. 
Sp. Sepiola Rondeletii, Sepia sepiola L., BuAINVILLE Malacol. Pl. 11. fig. 3. 
Comp. R. E. Grant on the anatomy of Sepiola vulgaris Lracu, &e. 
Transact. of the Zool. Soc, 1. 1833, pp. 77—86, Pl. m1. 
