EOLIS. 47 



fawncoloured, spotted with brown and white ; set in 9 rows : 

 foot with the anterior angles a little produced and pointed. 

 L. 0-5. 



HABITAT : Under a stone at low-water mark, Torbay (Alder). 

 [?"W. Sweden (Loven).] 



This obscure species, of which one specimen was got in 

 1845, requires further investigation. There is a possibility 

 of its being either a variety of E. angulata, or the young of 

 one of the many varieties of E. papillosa. 



22. E. CONCINNA, Alder and Hancock. 



E. concinna, A. & H. in Ann. N. H. 1st ser. xii. p. 234 ; Brit. Nud. Moll. 

 fam. 3, pi. 24. 



BODY oblong, pellucid white, tinged with buff or yellow : 

 dorsal tentacles rather long, smooth, white : oral tentacles one- 

 third shorter than the dorsal pair, arising from the upper sur- 

 face of the lips : branchial processes oblong, nearly linear, 

 purplish-brown and granulated internally ; the outer surface 

 pellucid, with a tinge of blue, giving them a metallic lustre ; 

 set in 9 or 10 rows : foot linear, pellucid ; the anterior angles 

 broad, and produced into blunt points. L. 0*5. 



HABITAT : On Sertularia argentea at low-water mark, 

 Whitley, Northumberland (Hancock); Egremont, near Liver- 

 pool [on Laomedea gelatinosa'] (Collingwood) ; [Cumbrae 

 (Eobertson). W. Sweden (Loven); Christianiafiord (Asb- 

 jornsen).] 



A pretty species, though rather sober in colour. The glan- 

 cing of the light on the papillae when in motion gives them a 

 silvery appearance. 



23. E. OLIVA'CEA, Alder and Hancock. 



E. olivacea, A. & H. in Ann. N. H. 1st ser. ix. p. 35 ; Brit. Nud. Moll, 

 fam. 3, pi. 2(5. 



BODY rather stout, yellowish-white, with opaque-white 

 spots ; a rosecoloured streak on each side of the head : dorsal 

 tentacles linear, smooth, rather short, yellowish-white, with a 

 band of rosecolour: oral tentacles rather shorter than the 



