VITRINA.—Prate X. 
THE YELLOW-LINED VirrINa. Shell depressly ovate, 
whitish horny, more or less open at the base, spire 
minute, flat, obscure, whorls rather ventricose, decus- 
sately striated, membranaceous at the edge. 
Geotis flavo-lineata, Shuttleworth, MS. in Mus. Cuming. 
Hab. Luquello, Porto Rico. 
Very closely allied to the preceding species. The dif- 
ference in the development of the columellar margin arises, 
probably, from the membranaceous edge breaking away in 
extracting the animal. The specific name indicates a dif- 
ference in the colouring of the animal. 
Species 76. (Mus. Cuming.) 
VITRINA NIGRO-LINEATA. 
Jormi, tenuissimad, hyalind, basi aperta, spird minutd, 
Vitr. testa depressissime auri- 
subemersad, anfractibus convexis, decussatim striatis, 
margine membranaceis. 
THE BLACK-LINED VITRINA. 
shaped, very thin, hyaline, open at the base, spire 
Shell very depressly ear- 
minute, a little emerged, whorls convex, decussately 
striated, membranaceous at the margin. 
Geotis nigro-lineata, Shuttleworth, MS. in Mus. Cuming. 
Hab. Luquello, Porto Rico. 
The name of this species, as of the two preceding, refers 
to the colouring of the animal, and in each instance the 
arcuating lines of growth of the shell are decussated by 
finely impressed spiral lines. 
Species 77. (Mus. Cuming.) 
Virrixa Ruivensts. Vitr. testd depressé ovatd, subauri- 
form, olivaceo-corned, nitente, basi fere aperta, spird 
pared, vix emersd, anfractibus convexis, subventricosis, 
spiraliter subobsoletée impresso-striatis, margine meni- 
branaceis. 
Tue Ruivo Virrina. 
ear-shaped, olive-horny, shining, almost open at the 
base, spire small, scarcely emerged, whorls convex, 
rather ventricose, spirally obsoletely impressly striated. 
membranaceous at the edge. 
Courrnouy, Gould, Exped. Shells, p. 26. 
Hab. Pico de Ruivo, Madeira. 
Shell depressly ovate, somewhat 
This interesting shell has traces of the spiral unpressed 
striz noticed in the three preceding species, but it is of a 
different form, more membranaceous, and of a bright trans- 
parent olive colow. 
Species 78. (Mus. Cuming.) 
VITRINA MEMBRANACEA. Vitr. testa depress? orbiculari, 
virente-olivaced, membranaced, parum nitente, spird 
pland, suturd impress@, anfractibus conveaxis, irregu- 
lariter arcuatim striatis ; apertura lunari-ovata. 
THE MEMBRANACEOUS VITRINA. 
cular, greenish-olive, membranaceous, but little shin- 
Shell depressly orbi- 
ing, spire flat, suture impressed, whorls convex, 1re- 
gularly arcuately striated ; aperture hmar-ovate. 
Benson, Ann. and Mag. Nat. Hist., Second Series, vol. 
Xl. p. 93. 
Hah. Balcadua, Ceylon. 
This is not a species of the Pelted/a section, but an or- 
dinary form of the genus. 
