140 SEPIID^. 



excavated portion extends over § of that side, and the 

 layers are more remote ; the cartilaginous hood at the 

 base is larger and deeper, and the spike is smaller and 

 less conspicuous. This species inhabits the northern 

 and western coasts of France. 



2. S. e'legans*, De Blainville. 



S. elegans, De Blainv. Diet. Sc. Nat. t. lxviii. p. 44, and Faune Franc;, 

 livr. 18. p. 19, pi. 3 A. f. 2. 



Body bluish-brown, with small transverse white lines and 

 a marginal row of white dots on the back ; underside dirty 

 white speckled with red : mantle oval, depressed, terminating 

 at the base in a small point in the middle, which represents 

 the beak of the shell : fins or swimming- organs narrow in 

 front and enlarging towards the base, where they are disunited : 

 tentacles •!■ longer than the ventral portion of the body and 

 the head taken together : arms having 4 rows of pedunculated 

 suckers ; ventral or lowest pair the largest (De Blainville). 



Shell boat-shaped; it is much smaller, narrower, and 

 more slender than in the first species ; the back is deeply 

 tinged with neshcolour, the cartilaginous margin on the upper- 

 side being tinted with yellow ; the corrugation is more delicate 

 and not so distinct ; instead of the medial ridge there are 

 several slight furrows, of which 2 or 3 are more conspicuous 

 than the rest ; the underside is scarcely raised in the centre, 

 and the excavated portion is more strongly lineated ; the car- 

 tilaginous fringe is not so disproportionately broad at the base ; 

 apophysis or beak longer, more prominent, and triangular 

 instead of rounded. L. 4. B. 1-25. 



Habitat : Oxwich Bay, near Swansea (J. G. J.) , and 

 Guernsey (F. C. Lukis) ; one entire shell and the greater 

 part of another. North and North-west of France (De 

 Blainville and others) ; Genoa ( Verany) ; Algiers (Au- 

 capitaine) . 



S. Orbignyana of Ferussac. 



* Elegant. 



