270 LIVERPOOL MARINE BIOLOGY COMMITTEE REPORT. 



Goniodoris casta7iea, Alder and Hancock. 

 A fine specimen of this rare species, IJ inches in length 

 and of rather a dark colour, was dredged in August, 1885, 

 between Port St. Mary and Spanish Head, Isle of Man, from 

 a depth of twenty fathoms ; bottom, Nullipore. I dredged a 

 similar specimen a few years ago in deep water off Holy Isle, 

 Lamlash Bay, Arran. 



Triopa claviger, Miiller. 



This species has been dredged by Forbes off the Isle of 

 Man. 



Polycera lesso7ii, d'Orbigny. 

 Mr. Byerley dredged one specimen of this species on the 

 north coast of Wirral in 1852. 



Polycera ocellata, Alder and Hancock. 

 Frequently taken at Hilbre, Egremont, and elsewhere 

 (Byerley). 



Polycera quadrilineata, Miiller. 

 Found at the Isle of Man (Forbes). 



Ancula C7istata, Alder. 

 This species is common in this neighbourhood, especially 

 at Hilbre Island. It has been recorded by Price and by 

 Byerley from various points on the coast. It was taken at 

 Hilbre Island on May 17th, June 13th, and July 11th ; and 

 was dredged in Hilbre Swash on May 9th. 



Specimens fully one inch in length have been found at 

 Hilbre. 



Sub-order.— POL YBKANCHIATA. 



Family. — Tritoniid.^ . 



Tritonia homhergiy Cuvier. 

 Forbes dredged large specimens of this species from 

 twenty-five fathoms off the north coast of the Isle of Man. 

 He found two varieties, of which the yellow one was larger 

 than the purple, and attained a size of six inches. 



