Fam. 1, Plate 18. 



GONIODORIS NODOSA, Montagu, up. 



G. alba, vel flavescens, cameo-tincta, maculis albis opacis : pallio, margine inciso, medio carinato, 

 tuberculis utrinque instructo ; branchiis 13, pinnatis. 



Doris nodosa, Mont, in Linn. Trans, v. 9, p. 107, pi. 7, f. 2. Mem. Brit. Anim. 282. 



Doris Barvicensis, Johns, in Ann. Nat. Hist. v. 1, p. 55, pi. 2, f. 11 — 13. Thomp. in Ann. Nat. 

 Hist. v. 5, p. 87. 



Goniodoris nodosa, Forbes in Ann. Nat. Hist. v. 5, p. 105. 



Goniodoris emarginata ? Forbes in Ann. Nat. Hist. p. 105, pi. 2, f. 12. 



Goniodoris elongata? Thomp. in Ann. Nat. Hist. p. 88, pi. 2"ff.'7. 



Hab. Under stones and in crevices of rocks within tide marks, and* in,, shallow water; not uncom- 

 mon. Coast of Devonshire, Montagu. Cornwall, R. Q. Couch, Epq*., Torbay; St. Andrews, Rev. 

 Dr. Fleming. Berwick Bay, Dr. Johnston. Shetland and Isle; of. Mhh,f Professor E. Forbes. 

 Penmaen-rhos and Llandillo Bay, North Wales, /. Price, Esq. Lambay Island* (13: \longata,) Killery 

 Bay, county Galway, and North of Ireland, TV. Thompson, Esq. Courtma'csherry; *Bay, county Cork, 

 Professor Allman. Dublin Bay and Malahide. Tynemouth, Cullercoats/anH^hMey:* 



Body about an inch long, ovate-oblong, sub-prismatic, rounded ajbove, produced and 

 obtusely-pointed behind, of a transparent white, tinged with rose- or flesh-colour, and 

 sprinkled with very minute opake white or yellow spots. Cloak sub quadrangular, or some- 

 what fiddle-shaped, not much produced, rounded on the back, with a free margin which is 

 scalloped into points, deeply notched behind, and generally turned upwards. It is 

 sprinkled, especially towards the sides and at the posterior end, with very minute opake 

 white or sulphur-yellow spots ; larger and more distant spots are disposed over the back. 

 An elevated ridge, more or less distinct, runs down the centre, and two or more irregular 

 rows of tubercular elevations down the sides of the back, each tipped with white. These 

 are readily seen in young individuals, forming generally two indistinct rows : in full-grown 

 specimens they are more numerous and less regular, and not always distinctly visible. 

 Borsal tentacles yellowish, strongly laminated on the upper portion, with about thirteen or 

 fourteen plates, above which the shaft is produced and truncated ; the lower portion for 

 about one third the length is smooth. The parts of the cloak around the tentacles are 

 slightly depressed, but appear more so from being very transparent, and without opake 

 spots. Head appearing beyond the cloak in front, having the sides produced into flat, 

 angular, blunt, tentacular processes, occasionally tinged with yellow. Branchial plumes 

 thirteen, large, pointed, transparent and colourless ; thick in the central stem, and simply 

 pinnate, with alternate larger and smaller laminae : they form a nearly complete circle round 

 the vent, which is tubular. In large individuals there are three small additional plumes 

 which fill up the posterior opening of the circle. Behind these there is a transparent spot, 

 caused by a deep indenture of the cloak, which has been taken for a pore: there is, 

 however, no perforation. The body is extended considerably behind the cloak into a blunt- 



