84 



of purple : mantle covered with rather small, unequal, flattish 

 tubercles : dorsal tentacles conical : oral tentacles tubercular : 

 fjills 9, tripinnate, not spreading, of a scarlet colour, rather 

 paler than the body. L. 1. 



HABITAT : On the shells of Pecten opercularis and on stones 

 in shallow water in Lamlash and Rothesay Bays ; rather rare. 

 [Falmouth (Cocks); Clyde district (Landsborough and Nor- 

 man).] 



This appears to be the scarlet Doris dredged by Professor 

 E. Forbes in the Isle of Man (Ann. N. H. 1st ser. v. p. 102), 

 and referred by him to D. argo. 



3. D. ZETLANDICA, Alder and Hancock. 



D. Zetlandica, A. & H. Brit. Nud. Moll. p. 42, and App. p. i. 



BODY oval, white or yellowish : mantle with rather large, 

 conical, pointed tubercles : dorsal tentacles linear, finely lami- 

 nated : oral tentacles tubercular : gills 6, bipinnate. L. O75. 



HABITAT : Inner haaf, near Lerwick, Shetland ; very rare. 

 A specimen was obtained in that locality by Mr. Barlee in 

 1849 ; and another has since been got off the Whalsey Skerries 

 on the same coast, in 40 f., by the Rev. A. M. Norman. 



The most striking peculiarity in this species is in the spines 

 of the tongue, which differ from those of any other known 

 Doris they are very long, slender, subclavate, and denticulated 

 on the inner margin. 



4. D. MILLEGRA'NA, Alder and Hancock. 



D. milkgrana, A. & H. Brit. Nud. Moll. p. 42, and App. p. i. 



BODY oval, depressed, yellow or orange: mantle large, 

 covered with minute, close-set, granular tubercles: dorsal 

 tentacles conical : oral tentacles linear : gills 6, bipinnate. 

 L. 1-25. 



HABITAT : Torbay. The only evidence we have of this spe- 

 cies consists of two specimens in Dr. Leach's collection at the 



