252 
MOLLUSCA. CEPHALOPODA. 
Sepia. 
6 . Nwmmulita elegans. — Compressed , smooth ; whorls about six; septa gently 
curved from the axis, numerous ; aperture rather prominent Sower. Min. 
Conch, t. uxxxviii. f. 2 — Emsworth. 
7 . N. variolaria . — Very convex, minute, smooth; edge obtuse; whorls 
four or five, with about twenty septa, forming rays near the margin. {Len- 
ticulites variolaria of Lamarck), Sower. Min. Conch, t. Dxxxviii. f. 3 . — London 
Clay — The Nautilus Comptoni is now arranged by Mr Sowerby in the genus 
Nummulita. 
Orihocera paradoxa. — Lanceolate, curved, three-angled, with a flat front, 
and convex sides ; aperture an equilateral triangle ; siphuncle nearly central. 
— Sower. Min. Conch, t. cccclvii. 
SEPIADiE. 
1. Head surrounded with eight arms and two feet. 
Sepia. 
Loligo. 
II. Head surrounded with eight arms, hut destitute of feet. The 
arms equal. 
Octopus. 
Gen. X. SEPIA. — The sac furnished with a narrow fin on each 
side throughout its whole length. 
40. S. qfficmalis. Cuttle-bone. — Body smooth, arms pedun- 
culated, lengthened ; dorsal plate elliptical. 
S. supina, Jonst. Exang. t. i. f 3.— S. off. Linn. Syst. i. 1095. Amoen. 
Acad. i. 609. Fenn. Brit. Zool. iv. 55 — Not common. 
Body oval, compressed, whitish, with purple dots. Arms nearly as long 
as the body, dilated tov/ards the extremity, and covered with suckers. The 
dorsal plate, known in the shops under the name of Cuttlebone, was former- 
ly used in medical practice as an absorbent. This plate is occasionally thrown 
ashore on all parts of the coast, but the living animal is seldom found. 
Gen. XI. LOLIGO. Calamary. — Sides of the sac only fur- 
nished partially with fins. 
^ Fins united with the tail on each side. 
41. L. vidgaris. — The fins, together with the tail, forming 
a rhomboidal expansion. 
Loligo, a Sleeve, List. Conch. Tab. Anat. ix. £ s. Borl. Corn. 260. t. 
XXV. f. 27 . — Sepia Lol. Linn. Syst. i. 1196. Fenn. Brit. Zool. iv. 53. 
—Not rare. 
Body compressed, whitish, v/ith dark spots ; these spots in the living ani- 
mal, and even in a portion of the skin when detached, exhibit remarkable 
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