of British MoUxisca. 75 



(ieiuiso. ANf'ULA, [jn'i'ii. 

 W2. Ancula cristata (Alder). 



Shetland {A. M. X.), Moniy Firth {(ror</oii), St. Andn-ws 

 [Mcintosh), Plymouth [GarstiuKj] . 



Taken abundantly at llilbre Island, Cheshire, by Prof. 

 Herdnian, who found one specimen " entirely of a hyaline 

 transparent white colour, without any yellow markings on 

 the dorsal papillae, and with no opaque white pigment on any 

 part of the body." Arran, X.B., and Firth of Forth {^llercl- 

 vian). 



Distribution. Boulogne {Boiich.- Chant.) ,Uenmark(/u'Oj/e>"), 

 W. Norway {G. 0. Sars), Kiel {Mei/er <(: Mobius), Heligo- 

 land (i'Ve?/ tC' Leuckart), Iceland {March) ^ Sweden [Loven). 



Genus 6. Tiiecac'EKA, Fleming. 

 D.J. rhecacera pennigera (Montagu). 



t)tl Lowestoft, lb fath. {Meyer), 20 fatli. off" Uame Head, 

 Plymouth {Garstany) . 



JJistrilmfiott. Sicily {Quatrefages), X. and N.W. France 

 {Fischer) . 



94. Thecaceru oirescens, Aid. ^^' Hanc. 

 yj. Thecacera capitnta, AM. i.^ ilanc. 



Genus 7. Ckimoua, Aid. t^- Ilanc. 



96. Criiiiura paj)il(atUy Ahl. v^ Hanc. 



The only two known specimens of this Nudibraiich are 

 those which 1 took at Guerusey, the one in 1858 the other in 

 1865. They occurred in shallow water. 



Genus 8. Polyceka, Cuvier. 



97. Polycera quadrilineata (M tiller). 



Shetland and Oumbrae {A. M. N.) ; St. Andrews (Ji'iw- 

 losh)y Plymouth {Garstany), Moray Firth {Gordon), Firth of 

 Forth {McBain). 



Distrihutioh. Mediterranean {Marion (C-c), Adriatic {lieryh 

 dL'c), Kiel {Meyer di Mobius), Denmark {Kroyer &c.). 

 Western France {Fischer), Sweden {Loven), S. and W. Nor- 

 way (G. 0. )Sars), Heligoland, 5-6 fath. {Meyer). 



Synonyms. Doris cornuta, Abildgaard, D. jiacu, jlontugu, 



