of British Mollusca. 
Subfam. 7. Fionidm. 
89 
Genus 12. Fiona, Hancock & Ernbleton. 
163. Fiona marina (Forskal). 
Fiona nobilis , Aid. & Hanc. Brit. Nud. Moll. fam. iii. pi. xxxviii a. 
Fiona atlantica , Bergh, Anatom. Unders. af Fiona atlantica , Vid. Medd. 
Natur. For. i Kjobenhavn, 1857. 
Fiona marina (Forskal), Bergh, Scient. Results Explor. Alaska, vol. i. 
(1879) p. 142. 
Penmaenmawr, N. Wales ( Thompson ), Southport Pier 
( Vicars) . 
Distribution . Mediterranean ( Bergh (fee.), W. France 
(Fischer), North Pacific (Bergh). 
Synonyms . Limax marinus , Forskal, AEolis fasciculata , 
Lamarck, Guvieri , Del. Chi., Hymenceolis elegantissima 
(A. Costa). 
Subfam. 8. Antiopinm. 
Genus 13. Antiopa, Aid. & Hanc, 1848 ( = Janus, 
Verany, 1844, nec Stephens, 1835). 
164. Antiopa cristata (Delle Chiaje). 
Shetland, and Seaham Harbour, co. Durham (A. M. N .), 
River Dee (Gollingwood) , Mersey and N. Wales ( Herdman ), 
Plymouth (Garstang). 
Distribution. Mediterranean ( Verany (fee.), Adriatic (Graeffe) , 
Boulogne (Bouch- Chant.). 
Synonyms . Antiopa splendida, Aid. & Hanc., Janus spi - 
nolce, Verany, and perhaps JEolis carinata, Costa. 
165. Antiopa hyalina, Aid. & Hanc. 
Hilbre Island, Cheshire (Byerley (fee.). 
Genus 14. Proctonotus, Aid. & Hanc. 
166. Proctonotus mucronifer, Aid. & Hanc. 
Arran, N.B., in 15 fathoms (Herdman) . 
Subfam 9. Hppoinm. 
Genus 15. Hero, Loven. 
167. Hero formosa, Loven. 
Hero formosa, Herdman, Proe. Roy. Phys. Soc. Edin. vi. (1881) p. 15, 
pi. i. figs. 4-6. 
Lamlash Bay, Arran, 10-20 fath., and off Salen, in the 
Isle of Man (Herdman). 
