120 Dr. Johnston on Scottish Mollusca. 



found lurking under stones between tide-marks. They seem 

 to have left the deeper water to shed their spawn, which is 

 laid on the under side of stones, in white gelatinous masses, 

 each mass being formed of a chain-like or beaded thread, 

 convoluted in every direction, and firmly attached by a colour- 

 less jelly. If unravelled, the chain would measure several 

 inches, but the separate links are only about one-tenth or one- 

 eighth of an inch long, and contain, each of them, numerous 

 ova. These are roundish or oval, with a rough irregular out- 

 line ; two, or at most three, contained within their own little 

 pellicle of jelly, which again lies immersed in the common 

 mass. 



2. E. Cuvierii, branchiae numerous, papillary, clothing the 

 sides rather irregularly ; tentacula 6. Plate III. fig. 9 — 11. 



Eolide, Cm. Mem. vi. 26. tab. Jig. 12 — 15. — Eolis Cuvierii, Lam. Anim. 



s. Vert. vi. i. 302. exclus. syn. „ 



Hab. Berwick Bay, rare. 



Desc. Body limaciform, upwards of an inch in length 

 when extended, tapered to a fine point posteriorly, convex and 

 rounded dorsally, naked along the middle, the sides covered 

 with rather long branchial papillae arranged in transverse 

 series : the prevailing colour is a rose-red (proceeding from 

 the viscera shining through a transparent skin), with clearer 

 patches and a line of white irregular spots running along the 

 back from the one extremity to the other. Head subtruncate, 

 depressed, the mouth with a pair of long setaceous tentacula on 

 each side, of a watery-white colour with milk-white tips : the 

 dorsal tentacula rather shorter than the oral, somewhat annu- 

 late, olivaceous with yellowish tips. Eyes two, placed behind 

 the base of the dorsal tentacula. Branchial papillae of a uniform 

 rose-red, subclavate, unequal, collected in about eleven imper- 

 fect clusters (about six in each cluster), set transversely on 

 the sides, and of which the foremost forms a sort of ruff be- 

 hind the dorsal tentacula. Foot narrow, linear-oblong, with 

 a plain free pellucid undulating margin, the anterior angles 

 produced into tentacular points. 



This is a beautiful delicately coloured species, more active 

 than its congeners, creeping along the bottom of the vessel, 

 or swimming in a reversed position with great elegance and 



