678 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [Nov. 14, 
Distribution. Cornish coast (coll. Turton)?, Bay of Biscay (de 
Folin), Cadiz (Paz, f. Hidalgo), throughout the Mediterranean, Mo- 
gador, C. Verd I., and Senegambia (Riebisch, f. Weinkauf’), Guinea 
(Dunker) ; 3-100 fms. 
Fossil. Pliocene: S. Italy. 
Among the synonyms is Ff. nimdosa (afterwards rosea) of Philippi, 
but not Patella nimbosa of Linné. 
1. EMARGINULA FissuRA, Linné. 
Patella fissura, L. 8. N. p. 1261. 
E. fissura, B. C. iii. p. 259, pl. vi. f. 3; v. p. 200, pl. lix. f. 2. 
‘Lightning’ Exp.: St. 4, 5, off the Faroe I. 
‘Porcupine’ Exp. 1869: 2, 6, 14, 18, 23a, L. Foyle, N. Channel, 
68, The Minch, Little Minch, near Belfast (and var. elata). 1870: 
Atl. Vigo B., 24 (var. elata) ; Med. Capo de Gata, Adventure Bank. 
Distribution. Finmark and Faroe I. to the Canaries, Mediterra- 
nean and Adriatic ; 0-295 fms. 
Fossil. Miocene?: Sicily (Seguenza). Pliocene: Edeghem 
(Nyst)?, Coralline and Red Crag, Antwerp Crag, S. France, Italy. 
Post-tertiary : Norway and Sweden, Scotland and Ireland, Sicily ; 
0-200 ft. 
E. conica of Schumacher, and E. reticulata of Sowerby. 
2. EMARGINULA ROSEA, Bell. 
E. rosea, Bell, in Zool. Journ. i. p. 52, pl. 4. f. 1: B.C. iii. 
p- 261; v. p. 200, pl. lix. f. 3, 3a. 
‘Porcupine’ Exp. 1870: Med. St. 26. 
Distribution. Southern counties of England, Blankenberg, Brit- 
tany, N. Spain, Mediterranean and Adriatic (var. pileolus); 7-95 fms. 
Fossil. Pliocene: Coralline Crag, N.W. Germany, Italy, and 
Rhodes. 
It is extremely problematical whether this is Z. rubra of Lamarck. 
His description of the colour (‘‘ rubra aut albo rubroque variegata”’) 
is not applicable; and the habitat (“les mers de Europe? ”’) is 
given with a doubt. He does not even notice any transverse strize. 
The aberrant form or variety (LZ. pileolus, Michaud= £. capuli- 
formis, Philippi, =. curvirostris, Deshayes,= FE. coste, Tiberi) is 
connected with the typical form by intermediate and insensible 
gradations. 
3. EMARGINULA crRassA, J. Sowerby. 
E. crassa, J. Sow. Min. Conch. p. 73, t.33, upper figures: B. C. 
ill. p. 263 ; 'v. p. 200, pl. lix. f. 4. 
‘ Porcupine’ Exp. 1869: St. 6, 24, 25, 89. 
Distribution. Bodé in Norway to the coasts of Anglesea and 
Dublin, Weymouth B. (Thompson, f. Pleydell)? ; 0-300 fms. 
Fossil. Miocene’: Sicily (Seguenza). Pliocene: Coralline and 
Red Crag, Belgium, S. Italy. Pust-tertiary: Norway, Sicily ; 
0-100 ft. 
E. decussata of Philippi and F. gigantea of Seguenza. A variety 
from the Coralline Crag was named E. crassalta by the late Mr. 
