EOLIS. 43 



13. E. Landsburgi, [Landsburgii) Alder and Hancock. 



E. Landsburgii, A. & H. in Ann, N. H. 1st ser. xviii. p. 294 ; Brit. Nud. 

 MoU. fam. 3, pi. 20. 



Body slender, violeteoloiired : dorsal tentacles longish, slen- 

 der, and slightly wrinkled, violetcoloured, with white tips : 

 oral tentacles rather longer than the dorsal pair, and of the 

 same colour : head rather narrow : hrancliial jyrocesses elliptical 

 linear, orange-red, with white tips ; set in 5 or clusters : 

 foot with the anterior angles shortish. L. 0*5. 



Habitat : Within tide-marks and in shallow water on the 

 western shores of England, Wales, and Scotland ; also at Burg- 

 head (Murray) ; [Weymouth (Gosse)] ; Exmouth (Hincks) ; 

 Channel Isles (Ansted). [Arcachon (Fischer).] This may 

 possibly be the Doris pedata found on the Devonshire coast by 

 Montagu. 



D. Branchial processes clustered: dorsal tentacles with a bid- 

 hous swelling : odontoj^hore luith a single smooth spine. 

 (Favorinus, Gray.) 



14. E. ALBA, Alder and Hancock. 



E. alba, A. & H. in Ann. N. H. 1st ser. xiii. p. 164; Brit. Nud. Moll, 

 fam. 3, pi. 21. 



Body very slender, white : dorsal tentacles of a blackish- 

 brown colour for about two-thirds up, above which they are 

 white, with a bulbous swelhng at a little distance from the apex : 

 oral tentacles long, white, gracefully curved: hranchicd pro- 

 cesses linear oblong, rather depressed, white, sometimes spotted 

 or ringed with bro^vn, with white tips ; set in 5 or 6 clusters : 

 foot with the anterior angles very long. L. 0-75. 



Habitat : On sponges and zoophytes in shallow water and 

 between tide-marks, pretty generally diffused, but not common. 



This elegant species is subject to great variety of colour and 

 markings. The gills are sometimes of a brownish colour, with 

 brown markings on the body ; this variety, which is very 

 rare in Britain, seems to be more plentiful in northern Europe, 



