Dr Herdman on the Invertebrate Fauna of Lamlash Bay. 27 



etc., in 10 to 20 fathoms, especially from 

 Port Lewis to the Cordou, and along the 

 west side of Holy Isle. 



Eolis amoena (Aid. and Han.). 



Off the south-west end of Holy Isle in 20 

 fathoms. 



E. pida (Aid. and Han.). 



Not uncommon in 10 to 20 fathoms, from 

 Port Lewis to the Cordon. 



E. viridis (Forb.). 



Off the south-west end of Holy Isle, 20 

 fathoms. Two specimens. 



E. glottensis (Aid. and Han.) ? 



This species was first discovered in Lamlash 

 Bay by Mr Alder. I cannot determine with 

 certainty whether or not my specimens 

 belong to it. They seem nearer to it than 

 to any other known species, but differ 

 slightly from Alder and Hancock's descrip- 

 tion. The thickened ends of the tentacles, 

 which are so prominent a feature in Alder's 

 figure, are not well marked, but otherwise 

 the shape of the body and processes, and 

 the number of the latter agree with the 

 characters of E. glottensis. In the colour- 

 ing of the branchial processes, however, 

 there is a slight difference ; these organs 

 having exactly the tints figured and de- 

 scribed for Eolis ccerulea (Montagu). 

 My notes on the specimens when living 

 are as follows : 



Body elongated, pale greenish grey, trans- 

 parent. 



Dorsal and oral tentacles also pale green, 

 and of much the same length. 

 Branchial processes stout, set in eight or 

 nine transverse rows, the three anterior 

 rows placed close together; the centre of 

 each process is of a granular dark green 



