178 UMBRACULUM. 
epidermis thin, scarcely shining; orange within in adults. (Opr.). 
Length 1:93, diam. 1°58 inch. (young shell). 
Mouth of the Chiriqui River, Bay of Panama (Bridges). 
Umbrella ovalis Cpr., P. Z. S., 1856, p. 161.—ReExEveE, Conch. 
Icon., vol. xi, pl. 1, f. 3 (1858). 
Concerning this remarkable shell, hitherto only found in the Old 
World, and, in spite of the bulk of its animal, not observed by either 
Mr. Cuming, Prof. Adams or Mr. Hinds, Mr. Cuming writes: it was 
not only brought by Mr. Bridges, but also by a gentlemen in Paris, 
who collected in exactly the same place. Two specimens are in 
Mr. Cuming’s collection, of which one, very much thickened, ap- 
pears to have formed part of a much larger shell. (Cpr.). 
U. PLicaTuLuM Martens. PI. 72, figs. 72, 73, 74. 
Shell a little concave, ovate-elliptical, pretty equally rounded in 
front and behind, with weak wave-like folds, radiating from the apex 
and especially distinct at the margin, where they are separated by 
distinctly marked, narrow furrows; concentrically striated above. 
Apex projecting wart-like, almost in the middle antero-posteriorly 
(anterior part to posterior as 7:6), but rather excentric laterally 
(left side to the right as 2:3). Under side, as in other species of 
the genus, with a yellowish colored, radially rib-striated middle 
field, bounded by a double closed line (corresponding to the pallial 
line of the bivalves), the yellow color elsewhere not very strongly 
pronounced, more brownish. Length 62, width 46, alt. 7 mill. 
Matanzas, Cuba (Gundlach). 
Umbrella plicatula MARTENS, Conchologische Mittheilungen, i, p. 
104, pl. 20, f. 1-8. 
This species is distinguished from U. mediterraneum, as well as 
from U. indica Lam. principally by the more lengthened contour 
and plication all around. U. mediterranewm has only in front a few 
generally stronger folds, U. indica none, U. eumingi Desh. from 
Bourbon, weaker ones, not continuing to the edge. 
Description and figures from von Martens. It may prove the 
same as the undescribed Bermudan species. It seems more allied to 
U. ovalis Cpr. than to other forms. 
U. BERMUDENSE Morch. 
This is a species of nearly the size of U. sinicum. It is known solely 
by two figures of the living animal drawn by a “ young man” for 
