CEPHALOPODA. 311 



LoLiGOPsis, Lam. 



Or the Calmarets, should have but eight feet as in Octopus; they 

 are only known, however, by drawings of but little authority(l). 



In the true Loligo the long arms are furnished with cups like 

 the other tentacula, and the fins are placed near the point of the sac. 

 Three species are found in the European seas. 



L. vulgaris; Sepia loligo, L.; Rondel., 506; Salv. 169. Fins 

 forming a rhomb at the bottom of the sac. 



L. sagitlata, Lam.; Seb., Ill, iv. Fins forming a triangle at 

 the bottom of the sac; arms shorter than the body, and loaded 

 with cups for about half their length. 



L. media; Sep. media, L.; Rondel, 508. Fins forming an 

 ellipsis at the bottom of the sac, which terminates in a sharp 

 point(2). 



Onykia, Lesueur.— Onychotheuthis, Lichtenst. 



The long arms furnished with cups terminating in hooks; in other 

 respects the form is the same(3). 



Sepiola, Cuv. 



The rounded fins attached to the sides of the sac and not to its 

 point. One species, 



S. vulgaris; S. sepiola, L.; Rondel., 519, inhabits European 

 seas. The sac is short and obtuse, and the fins small and cir- 

 cular. It seldom exceeds three inches in length, and its horny 

 lamina is as slender and sharp as a stilet. 



Chondrosepia, Leukard. — Sepiotheutes, Blainv. 



The whole margin of the sac, on each side, bordered with the fins, 

 as in Sepia; but the shell horny, as in Loligo(4). 



(1) See, however, Leachia cyclura, Lesueur, Ac. Nat. Sc. Phil., 11, p- 89, and 

 Krusenstern, Atlas, pi, Ixxxviii. 



(2) Add, Lot. Bartrainli, Lesueur, Ac. Nat. Sc. Phil., II, vii, 1, 2;—Lol. Bart- 

 lingii. Id., XCV;— io/. ilkcehrosa, Id., pi. F, No. 6;— L. pelagica, Rose, Vers., 

 I, 1, 2,—L. Pealii, Lesueur, T, c, viii, 1, 2,—L. pavo. Id., XCVI;— L. brevipinna. 

 Id., lb., Ill, X. 



(3) On. cariboea, Lesueur, Ac. Nat. Sc. Phil., II, ix, 1, 2;— On. angulata. Id., 

 lb., I, 3; — On. uncinata, Quoy and Gaym., Voy. Freycin., Zool., pi. vii, f. 66; — On. 

 Bergii, Licht., Isis, 1818, pi. xix;—On. Fabricii, lb., Id.;— 0«. Banksii, Leach, 

 App. Tuckey, pi. xviii, f. 2, copied Journ. de Phys., tome LXXXVF, June, f. 4; — 

 On. Smithii, Leach, lb. f. 3, Journ. de Phys , lb., 5. 



(4) Chondrosepia loligiformis, Leukai'd, App. Ruppel., pi. vi, f. 1- 



