Fam. 3, Plate 44. 



Figs. 1 to 8. 

 ANTIOPA CRISTATA, Delle Chiaji, Sp. 



A. ovata, postice attenuata, pallide fulva, pellucida; branchiis numerosis, ovato-oblongis, inflatis 

 apicibus opacis, caeruleis, glandula centrali brunnea, lineari, superne furcata; tentaculis dorsalibus 

 subconicis, valde laminatis ; tentaculis labialibus parvis linearibus. 

 Eolis cristata, Del. Chia., Desc. Stor. Anim. Nap., pi. 88. 

 Janus Spinola, Verany, Catal. Inv. Genova, p. 24, pi. 2, f. 9. 



Blanchard, in Ann. des Scien. Nat., 3 me Ser., v. 11, p. 77. 

 Antiopa splendida, Aid. and Hanc., in Ann. Nat. Hist., 2d Ser., v. 1, p. 190. 

 Spence Bate, Notes Faun. Swans., p. 7, pi. 2. 

 For. and Hani., Brit. Moll., v. 3, p. 609, pi. b. b. b., f. 6. 

 Hab. Torbay, Dr. Battersby. Fowey Harbour, Cornwall, J. A. Langland Bay, South Wales, 

 M. Moggridge, Esq. Barricane, near Ilfracombe, P. H. Gosse, Esq. Menai Straits, J. A. 



Body about an inch and a half in length, ovate, rather depressed, and tapering to a fine 

 point behind, of a delicate lemon-yellow inclining to buff or fawn-colour, very transparent, 

 sometimes nearly white. Dorsal tentacles conical, a little bent in front, and truncated at the 

 top, yellow with white tips. They are strongly laminated in an oblique direction, the laminae 

 uniting in a ridge behind. The tentacles are united at the base, for about a quarter of their 

 height, by an arched crest of a semicircular form, a good deal sinuated and lobed, narrow on 

 the top, and spreading out before and behind ; the sides shew a radiating structure. Oral 

 tentacles short and linear, set on the sides of the head, which is of a conical form, the lips over- 

 hanging the mouth like a hood. Branchice very numerous, ovate-oblong, rather abruptly 

 pointed. They are capable of great inflation, and are of the same colour as the body, and 

 very transparent, shewing a narrow, brown, central gland, which is bifurcated and sacculated 

 at tKe top. The apices are opaque bluish white, deepening into ultramarine blue, and have a 

 brilliant metallic lustre. The papillae are thickly set on the sides of the back and round the 

 head in front, on a pallial ridge, without apparent order, meeting posteriorly a little behind 

 the tubular anus, from whence a line of white runs down to the tail. The papillae near the 

 foot are small and much crowded ; those towards the centre of the back are large, and when 

 the animal is crawling, nearly conceal the whole of the body. The back is generally blotched 

 and spotted with bluish white, having the same metallic lustre as the tips o'f the papilla?. The 

 •gastro-hepatic vessels are very distinctly seen through the skin, forming two brown lines down 

 the sides of the back, with ramifications running into the papillae. Foot rather broad, thin at 

 the edges, and deeply grooved in front, so as to form two distinct laminae ; the upper one pf 

 which is strongly notched in the centre ; the lower rather less so ; it is a little convex in 



