UMBRACULUM. 179 
Dr. George Forbes in 1758, and published in the Philosophical 
Transactions for that year. These figures are so poor that their 
reproduction here would be useless ; it is enough to say that they 
show the generic characters fairly well. The mantle edge and border 
of foot seem to be very ragged. No specimens seem to have occurred 
to later naturalists. It may be the same as the preceding species ; 
and if so, the latter should have priority, being well described and 
figured, while this has never been described and the figures are 
totally inadequate. Morch is in error in stating that Dr. Forbes 
called this animal a “sea-batt.” 
Bermuda (Dr. Geo. Forbes). 
Fish . . . of the shell kind, Dr. Gzorcr Forsss, in Philos. 
Trans., 1, 1758, p. 859, pl. 85 (1759).—Operculatum Bermucense 
Mores, Malak. Bl., xxii, p. 179 (based wholly on the figures of 
Forbes). 
U. MEDITERRANEUM Lamarck. PI. 69, figs. 44, 45, 46, 47, 48, 49. 
Mantle whitish, becoming orange-tinted at the edges, which bear 
flat, triangular filaments. Foot orange colored above and below, 
the upper surface densely tubercular, tubercles unequal, each whit- 
ish at the summit ; tubercular upper surface covered with a brown, 
mucilaginous epidermis. Length 12-13, width 9-10 cm.; some- 
times as large as 19 by 14 cm. 
Shell oblong, extremely depressed, whitish under a thin yellowish 
cuticle; apex considerably posterior and to the left, conically pro- 
jecting and recurved like a Capulus, toward the posterior and left 
margins. Margins conspicuously undulated; disk with distinct 
though low and wide radial waves, and some linear grooves; and 
with concentric growth-strie or wrinkles. Interior pale yellow or 
white toward the periphery and on muscle-scar, with the space within 
the muscle-impression and a ring outside of it rich brown. 
Length 5:2; breadth 3:7, alt. -5 cm. 
Length 7:2-7°5, breadth 6:1-6°3 em. 
Entire Mediterranean and Adriatic Seas; from the Atgean to 
Spain, but rather local ; Atlantic at Cape Verde Is. (‘ Talisman’ and 
‘Challenger ’);? St. Helena (Smith). Laminarian zone and deeper. 
Pliocene of Italy ; pleistocene of Sicily and Rhodes. 
Umbrella mediterranea Lam., An.s. Vert., vi, p. 343; edit. Drsu., 
vii, p. 574.—Putw., Enum. Moll. Sicil., i, p. 118, pl. 7, f. 11.— 
DELEssERT, Ree. de Coq., pl. 23, f. 12.—Forsrs, Rep. Ag. In- 
