REPORT ON THE NUDIBRANCHIATA. 275 



Cavolina aurantiaca, Alder and Hancock. 

 Mr. Price, Mr. Byerley, and Dr. Colling wood have 

 found this species occasionally at Hilbre, Woodside, New 

 Brighton, &c. 



Cavolina arenicola^ Forbes. 

 This species was dredged in 1844 by Prof. Forbes off 

 Anglesey, at the entrance to the Menai Straits, from a depth 

 of ten fathoms, on a weedy bottom. 



Cavolina viridis, Forbes. 

 First discovered by Prof. Forbes on Antennulariay dredged 

 from deep water olBf the Manx coast. 



Cuthona nana. Alder and Hancock. 

 This species was collected on July 11th, 1885, at Hilbre 

 Island, during one of the expeditions of the L. M. B. C. 



Galvina picta, Alder and Hancock. 



Found occasionally at Hilbre and Egremont (Byerley). 

 Mersey and Dee, not uncommon (Collingwood). Menai 

 Straits (Forbes). Off Red Wharf Bay, May 25th, 1885. 



This species was dredged off Port Erin, Isle of Man, in 

 August, from a depth of fifteen fathoms. 



Galvina tricolor^ Forbes. 

 Euhranchus tricolor, Forbes, Malacologia Monensis, p. 5. 



Off Isle of Man, tw^enty fathoms, and off Anglesey 

 (Forbes). 



This large and beautiful species was first found by Prof. 

 Ed. Forbes in September, 1836, off the Manx coast, at a 

 depth of twenty fathoms, and is described and figured in 

 his Malacologia Monensis under the name of Euhranchus 

 tricolor. Since then it has been found at various places on 

 the west coast, and is not uncommon in the neighbourhood 

 of Lamlash Bay, Arran. 



One large specimen was dredged during August, between 



