CEPHALOPODA. 31 



The lateral portions of the sheath exhibit deep vascular impressions at the posterior 

 extremity. 



The />. sepioidea is found plentifully at Bracklcsham Bay, on the coast of Sussex; 

 it is also found at Stubbington (near Gosport) and at Sheppy. In France it occurs, 

 according- to M. d'Orbigny, in the lower calcaire grossier at Chaumont (en bas), Vivray, 

 and Saint Germain ; in the upper calcaire grossier at Chaumont (en haut), Grignon, 

 Courtngnon, Parnes, Muchi-le-Chatel, &c, and, in the sandy beds above the calcaires 

 grossiers, at Tancrou, Aumont, Acy, &c. 



The specimen (PI. 1, fig. 1//) exhibits nearly the entire form of the shell ; it was 

 found at Sheppy, and enriches the cabinet of Mr. Dixon. The length is four inches, 

 and the breadth across the superior extremity of the sheath, if the cast were perfect, 

 would be rather more than an inch. The remains commonly found seldom consist of 

 more than the rostrum, with, occasionally, portions of the ventral plate, and, more 

 rarely, of the posterior extremity of the sheath. The ordinary size of the rostrum is 

 six tenths of an inch* long, and three tenths wide at the superior extremity. 



No. 2. Belosepia Cuvieri. Deshayes. Tab. I, fig. 3 a — e. 



Sepia Cuvieri ; Desk. 183/. Foss. des Env. de Paris, p. 758, tab. 101, fig. 7-9. 



— — Xyst. 1843. Descr. des Coq. et des Polyp, des Terr. tert. de la Belg. 



p. CIO, tab. 4G, fig. 1. 

 • — — Picfet. 1845. Traite elern. de Paleont. vol. ii, p. 315. 



— sepioidea (sp.) ; D'Orb. 1845-7. Moll. viv. et fos. vol. i, p. 269. 



Belosepia Oweni ; J. D. C. Sowerby. 1849. Dixon's Geol. Hist. &c. p. 109, tab. 9, 

 fig. 13a. 

 Nee Sepia Cuvieri ; If Orb. 1825. Tab. Meth. de la Classe Ceph. p. 67. 

 Nee Belosepia Cuvieri ; Voltz. 1830. Obs. sur les Belemn. p. 22, tab. 2, fig. 6a-g. 

 Nee Sepia Cuvieri; Sow. Min. Con. vol. vi, p. 183, tab. 591, fig. 1. 

 Nee Belosepia Cuvieri; /. D. C. Soiv. 1849. Dixon's Geol. Hist. &c. p. 109, tab. 9, fig. 11a. 



B. Testa extremitate posticali later 'alitor dilatatd ; rostro brevi, crasso, arena to, acuto, 

 ad basim latissimo ; lamina ventrali arcuatd, profundi} sulcata, in margine denticulatd ; 

 eatlo dorsalipTofwn.de rvyoso, margine inferiori recto aut sursum vergenti. 



M. Deshayes, in his description of this species, refers to Beloptera sepioidea 

 (Beloptere de Cuvier) of De Blainville, and to the specimen figured by Mr. Sowerby 

 in ' Mineral Conchology,' as identical with it. The description given by M. de 

 Blainville is rather sub-generic than specific, and is too general for the purpose of 

 identity ; but the figures given by him are evidently those of a mutilated specimen of 



* In stating the size of the shells I have used tenth parts of an inch, in order to facilitate a comparison 

 with the measurements of French shells ; as tenths of an inch may be readily, and with sufficient accuracy, 

 converted into " millimetres" by taking 1 tenth as equal to 2\ millim. The exact proportion is 305 

 millim. = 12 inches; i. e. "1 in. = 2-54166 &c. millim. 



