Fam. 1, Plate 20. 

 TRIOPA CLAVIGER, Muller, Sp. 



T. albus, dorso tuberculis aurantiacis : appendicibus linearibus pallii flavo-terminatis : tentaculis 

 subclavatis, ftavis : branchiis 3, bipinnatis, flavo-terminatis. 



Doris clavigera, Muller, Zool. Dan. Prod. 229. 



Idem, Zool. Dan. v. 1, p. 17, pi. 17, f. 1-3. 

 Gmel., Linn. Syst. Nat. p. 3104. 



Tergipes pulcher, Johns., in Loud. Mag. Nat. Hist. v. 7, p. 490, f. 59. 



Euplocamus plumosus, Thomp., in Ann. Nat. Hist. v. 5, p. 90, pi. 2, f. 4. 



Euplocamus claviger, Idem, in Report Brit. Assoc, for 1843, p. 250. 



Triopa claviger, Johns., in Ann. Nat. Hist. v. 1, p. 124. 

 Loven, Index Moll. Scand. p. 6. 



Hab. At different depths, from twenty fathoms to within tide-marks, on most of our coasts. 

 Berwick Bay, Dr. Johnston. Cullercoats, not common, and always from deepish water. Loch 

 Strangford, and Lahinch, Co. Clare, Ireland, TV. Thompson, Esq. Isle of Man ; and Bressay Sound, 

 Shetland, Professor E. Forbes. Whiting Bay, Isle of Arran, D. Landsborough, Esq. Not uncommon 

 near low-water mark, Torbay; Salcombe Bay, Devonshire; Fowey Harbour, and Helford River, 

 Cornwall, J. A. 



Body from half to three quarters of an inch in length, elongated, depressed, rounded 

 in front, nearly parallel at the sides, and tapering to an obtuse point behind ; white, with all 

 the processes tipped with yellow or orange : a line of yellow spots generally runs between the 

 cloak and foot to the tail, and on the latter is a central streak of the same colour. Cloak 

 indistinct, white ; with a few scattered, obtuse, orange or scarlet tubercles, of unequal sizes, on 

 the back ; the margin surrounded by about twenty longish, linear or subclavate appendages, 

 each terminated with yellow or orange : six or seven of these are arranged on each side ; they 

 are obtuse, and usually curved towards the back, in a greater or less degree, according to the 

 will of the animal, which has the power of moving them either together or separately. Those 

 round the front are of smaller size, taper gradually to a point, and are generally a little branched 

 or tuberculated towards the end: they are about eight in number, the two central ones smallest. 

 Dorsal tentacles set far apart, linear or subclavate, laminated to near the base with about 

 fourteen or fifteen plates ; they are yellow on the laminated part, and transparent white below. 

 Sheaths small, plain, and rather tight. Head rather small, with two short cylindrical oral 

 tentacles, truncated at the end, longitudinally folded, and open along the upper side. 

 Branchial plumes three, rather long, narrow, and elliptic ; bipinnate, transparent white 

 tipped with yellow. Foot transparent white, with a narrow longitudinal patch of pinkish- 

 brown, from the liver, in the centre. It is truncated and deeply indented in the middle in 

 front, and terminates in an obtuse point behind. 



