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2. A CATALOGUE OF THE SPECIES OF EMARGINULA, A GENUS OF 
GASTEROPODOUS MOLLUSCA, BELONGING TO THE FAMILY 
FIsSURELLIDZ ; IN THE COLLECTION oF H. Cuming, Esa. 
By Artuur Apamsgs, R.N., F.L.S. ere. 
Genus EMarGinuta, Lamarck. 
Head proboscidiform ; tentacles subulate, with the eyes on tuber- 
cles at their external bases; foot with a range of cirrhi round the 
sides; mantle-margin simple; branchial plumes two; anal siphon 
with its angulated membranous sides projecting from the edges of the 
fissure ; tongue with a central laminar subquadrate tooth and nume- 
rous lateral teeth. 
Shell conical, with an elevated slightly recurved entire vertex turned 
towards the posterior end ; surface cancellated ; aperture emarginated 
in front by a slit, which runs for some distance up the shell; interior 
without a partition; muscular impression crescentic, interrupted in 
front. 
Emarginulus, Montf.—Patella, sp. Linn. 
1. EMARGINULA FISSURA, Linn. 
Patella fissura, Limn. Syst. Nat. ed. 12. p.1261.—Emarg. fissura, 
Flem.—£marg. levis, Recluz.—Emarg. curvirostris, Macgil. 
Hab. British Islands. Mus. Cuming. 
2. EMARGINULA RETICULATA, Chemn. 
Emarg. reticulata, Chemn.; Sowerby, Genera (Emarg.), f. 5. 
Hab. Malta, on stones. Mus. Cuming. 
3. EMARGINULA CANCELLATA, Philippi. 
Emarg. eancellata, Phil. En. Moll. Sicil. pl. 7. fig. 15.—? Patella 
erystallina, Wood. 
Hab. Sicily, and island of Paros. Mus. Cuming. 
4, EMARGINULA FISSURATA, Chemn. 
Patella fissurata, Chemn. 11.1929-30; Sowerby, Genera(Emarg.), 
fig. 3.—Emarg. rubra, Lam. Hist. 
Hub. Seas of Europe. Mus. Cuming. 
5. EMARGINULA CURVIROSTRIS, Deshayes. 
Emarg. conica, Blainville, Man. pl. 48. fig. 4. 
Hab. 2 
6. EMARGINULA ROSEA, Bell. 
Emarg. rosea, Bell, Zool. Journ. vol. i. 1824.—Emarg. pileolus, 
Michaud.—Emarg. capuliformis, Philippi. 
Hab. British Islands. Mus. Cuming. 
7. EMARGINULA cRAsSA, J. Sowerby. 
Emarg. crassa, J. Sowerby, Min. Conch. pl. 33; Forbes and Han- 
ley, Brit. Moll. pl. 63. fig. 2. 
Hab. Norwegian Seas. Mus. Cuming. 
