British species of Naked Mollusca. 293 



each side. Dorsal tentacles stout, subclavate, yellowish, mottled 

 with dark brown; laminae twelve or thirteen. Branchiae very 

 small, retractile within a -cavity; they consist of seven imper- 

 fectly bipinnate plumes pointed at the top and strongly blotched 

 with opake yellowish white and dark brown. Head indistinct, 

 with long linear oral tentacles. Foot deep lemon-coloured, grooved 

 and rounded in front, with the upper lamina notched in the 

 centre. Length nearly an inch. 



We found one specimen of this new Doris inside an old shell 

 of Pecten opercularis dredged in Lamlash Bay. It is very unlike 

 any of the other British species. 



Doris sparsa. — Body ovate, much-depressed. Cloak of an ob- 

 scure pale yellow, with a few reddish brown freckles and distant 

 spiculose tubercles. Dorsal tentacles slightly conical, with eight 

 or nine broad distant laminae, blotched with olive-brown; the mar- 

 gins of the cavities furnished with three or four tubercular points. 

 Branchice very small, colourless, consisting of nine pinnate plumes 

 arranged in the shape of a horse-shoe. Head with a large semi- 

 circular veil. Foot nearly as broad as the cloak, colourless ; the 

 front slightly bilobed. Length half an inch. 



Found on Cellepora pumicosa from deep water, Cullercoats. 

 It is allied to D. depressa and D. pusilla. 



Eumenis flavida. — Body quadrilateral, pale lemon-yellow above, 

 white beneath. Dorsal tentacles clavate and laminated; the 

 sheaths set round the top with about six tubercles, the outside 

 ones largest, each having a ring of fawn-colour. Veil very small, 

 with about four tubercular points. Branchice papillose, mostly 

 short, set in a waved line on the sides of the back, three on each 

 side being larger than the rest and nearly linear ; they are all 

 ringed with fawn-colour. The branchiae approach very near to 

 the tail. Sides of the body with a few pale yellow markings. 

 Foot nearly linear, transparent white, slightly tinged with purple 

 brown at the margin ; it is slit along the front and produced into 

 tentacular points at the sides. Length about a quarter of an inch. 



Dredged on a small coralline in Lamlash Bay. 



Eolis Glotensis. — Body pale greenish-yellow. Dorsal tentacles 

 of the same colour as the body, rather long, linear, smooth and 

 thickened towards the top. Oral tentacles about two-thirds the 

 length of the dorsal pair, and of a similar form and colour, set 

 on the upper side of the lips : outline of the head semicircular. 

 Branchice rather short and thick ; their central vessel of a dark 

 bottle-green, approaching to black, the apices deep orange-yel- 

 low. They are set in eight or nine transverse rows, three to five 

 in each row ; the first three rows are close together. Foot trans- 

 parent white, the front notched in the middle and the angles 

 slightly produced and rounded. Length four-tenths of an inch. 



Dredged in Lamlash Bay upon Pecten opercularis. 



