History of British animals - University of Guam Marine Laboratory

252 MOLLUSCA. CEPHALOPODA. Sepia.6. Nummulita elegans — Compressed ,smooth ; whorls about six; septa gentlycurved from the axis, numerous ; aperture rather prominent Sower. Min.Conch, t. uxxxviii. f. 2—Emsworth.7. N. variolaria.— Very convex, minute, smooth ;edge obtuse ; whorlsfour or five, with about twenty septa, forming rays near the margin. {Lenticulitesvariolaria of Lamarck), Sower. Min. Conch, t. Dxxxviii. f. 3. — LondonClay—The Nautilus Comptoni is now arranged by Mr Sowerby in the genusNummulita.Orthocera paradoxa— Lanceolate, curved, three-angled, with a flat front,and convex sides ; aperture an equilateral triangle ; siphuncle nearly central.— Sower. Min. Conch, t. cccclvii.sepiam:.1. Head surrounded with eight arms and two feet.Sepia.Loligo.II. Head surrounded with eight arms, but destitute of feet. Thearms equal.Octopus.Gen. X. SEPIA.—The sac furnished with a narrow fin on eachside throughout its whole length.40. S. officinalis. Cuttle-bone.— Body smooth, arms pedunculated,lengthened ;'dorsal plate elliptical.S. supina, Jo7ist. Exang. t. i. f. 3. — S. off. Linn, Syst.i. 1095. Amcen.Acad. i. 609. Penn. Brit. Zool. iv. 55.—Not common.Body oval, compressed, whitish, with purple dots. Arms nearly as longas the body, dilated towards the extremity, and covered with suckers. Thedorsal plate,known in the shops under the name of Cuttlebone, was formerlyused in medical practice as an absorbent. This plate is occasionally thrownseldom found.ashore on all parts of the coast, but the living animal isGen. XI. LOLIGO.Calamauy.— Sides of the sac onlyfurnishedpartially with fins.* Fins united with the tail on each side.41. L. vulgaris.— The fins, togetherwith the tail, forminga rhomboidal expansion.Loligo, a Sleeve, List. Conch. Tab. Anat. ix. f. s. Borl. Corn. 260. t.xxv. f. 27 — Sepia Lol. Linn. Syst.i. 1196. Penn. Brit. Zool. iv. 53.— Not rare.Body compressed, whitish, with dark spots;these spots in the livinganimal,and even in a portion of the skin when detached, exhibit remarkable