EOLIS. 591 



This species lives chiefly at the edge of low water, but 

 occurs also deeper. It is found not uncommonly in the 

 Frith of Forth (E. F.) ; in Berwick bay (Johnston) ; and 

 on the Northumberland coast (Alder and Hancock.) We 

 have taken it abundantly in Zetland (E. F), It occurs 

 in many localities elsewhere on the English coast. Also 

 on the north, east, and west of Ireland (W. Thompson). 

 It has a wide range along the European shores of the 

 Atlantic. 



2. E. Peachii, Alder and Hancock. 



Ann. Nat. Hist. 2nd series, vol. i. p. 190. 



" Body rather flat, yellowish white. Dorsal tentacles 

 longish and smooth. Oral tentacles shorter. Head broad 

 and rounded, angulated at the sides. Branchia) very 

 numerous, and thickly set, passing round the dorsal ten- 

 tacles so as nearly to unite in front, and terminating 

 behind very near the tail. The papillee are nearly linear, 

 slender, with a brownish central vessel, and having the 

 apices sprinkled with opake white spots. Foot rather 

 thin and broad, arched in front, with obtuse angles. 

 Length three-quarters of an inch." A. and H. 



Fowey harbour, Cornwall (Peach, Alder) ; Cullercoats, 

 Northumberland (Alder). 



3. E. GLAUCA, Alder and Hancock. 



Ann. Nat. Hist. vol. xvi. p. 314, and Monog. part 4, fam. 3, pi. 11. 



Body (nearly two inches long) subdepressed, elongated, 

 tapering and mucronate behind, pale red. Branchise ver- 

 micular, subconic, subcompressed, glaucous green, pale- 

 tipped, speckled with brown and white, very numerous, 

 in about fourteen of ten or twelve papilla each, the 



