VITRINA.—Puate IV. 
A bright transparent golden-horny shell, with the usual 
strie of growth rather prominently plicated, but scarcely 
in such a manner as to be called crenulated. 
Species 27. (Mus. Cuming.) 
VITRINA RESILIENS. Vitr. testd depresse semiglobosd, 
aureo-corned, pellucida, spira convexiusculd, viz emersd, 
anfractibus declivi-convexis, subconspicue arcuatim pli- 
cato-striatis ; apertura oblique lunari-rotundata. 
skrppine VirrrIna. Shell depressly semiglobose, 
golden-horny, transparent, spire 
scarcely emerged, whorls slopingly convex, rather 
conspicuously arcuately plicately striated; aperture 
THE 
rather convex, 
obliquely Iunar-rounded. 
Beck, Pfeiffer, Pro. Zool. Soc. 1848, p. 106. 
Hab. Island of Zebu, Philippines; Cuming. 
The typical specimens of this species are rather more 
globose than those of the preceding, with the apex less 
flattened; and the animal of /. resiliens is described by 
Mr. Cuming as being white, whilst in /. crenularis it is 
yellow. 
skipping habit of the animal. When Mr. Cuming picked 
them off the bushes at the Philippine Islands and placed 
them on the palms of his hands, they kept up a succession 
of muscular leaps. This habit in Vitrina has been also 
noticed in India by Mr. Benson and Mr. Theobald. 
Species 28. (Mus. Cuming. 
VITRINA BICOLOR. Vitr. testd globosd, tenuissimd, opalino- 
corned, nitidissima, spird convexd, vix emersd, anfrac- 
tibus arcuatim plicato-striatis, rotundatis, ventricosis ; 
apertura ampli, rotundatda. 
THE fwo-coLourED Virrina. Shell globose, very 
thin, opal-horny, very shining, spire convex, scarcely 
emerged, whorls arcuately plicately striated, rounded, 
ventricose ; aperture large, rounded. 
Buck, Pfeiffer, Pro. Zool. Soc. 1848, p. 104. 
Hab. Island of Guimaras, Philippines ; Cuming. 
A full globose opal-horny shell, quite distinct in form 
and texture from the two preceding. The species is named 
two-coloured from the colours of the animal, which is de- 
scribed by Mr. Cuming as having the head black and the 
The name resilicns is intended to denote the | body white. 
