90 Revision of British MoUusca. 



Distribution . Deumark {March) ^ Cliristiania Fiord and 

 Lofoten Islands, 15-100 fath. (G. 0. Sars). 



Sijnonyrns. CUelia trilineata, ^I. iSars, and Trit)iiia vehila^ 

 CErsted. 



Fam. 10. HermaeidsB. 

 Genus 1. IlER.^rjiA, Loven. 



168. Ilenncea hijida (Montaguj. 



Plymouth [Garstamj^ in litt.). 

 Distribution. Naples ( Cos^a) , Genoa {Trinchese) . 

 It is U. Ilancocki, Tiincliese, and perhaps H. cruciafuSj 

 Agassiz 5 it is also P/tysojjneumon carneuiHj Costa. 



169. Ilerma'a dendritica, Aid. & Hanc. 



Distribution. Naples {Costa), Genoa {Trinchese), Trieste 

 {Graeffe). 



It is //. brevicormSj lutescens, and orbicularis of Costa. 



Genus 2. Alderia, Alhnan. 



170. Alderia modesta (Loven). 



Distribution. Sweden {Loven). 

 Ir. is Alderia amphibia, AUnian. 



D. P E L L I B R A N C II I A T A. 



Fani 11. Elysiidae. 

 Genus Elysia, R.isso. 

 171. Elysia viridis (Montagu). 



Cunibrae and Plymouth {A. M. X.). 



Var. olivacea, Jeffreys. 



Distribution. Mediterranean {Marion tC'c), Adriatic {Bergh 

 d-c), yFgoan {Forbes), Kiel {Mei/er tf- MiJbius), Denmark 

 (Bergh), i^wcdcn {Loven), Norway and Finmark, 0-10 t'atli. 

 {G. '0. Sars). 



