AAP eT Veo ah Ay 
Priate V. 
Species 15. (Mus. ?) (Copied. ) 
Apl. testa quadrata, tenui, pallida, 
concentrice rugatd; apice pauld elevato, sub- 
calcareo, refleco, moderate incurvo; margine su- 
periori rectiusculo, depresso, ad terminum cuneato ; 
labio externo recto, infra rotundatim angulato ; 
margine inferiori convexo, verstis marginem dor- 
salem sursium acelivi. 
BLACK AptysiA. Shell square, thin, pale, con- 
centrically wrinkled, apex a little elevated, some- 
what calcareous, reflected, moderately incurved ; 
upper margin rather straight, depressed, cuneate 
at the end; outer lip straight, with a rounded 
angle below; lower margin convex, sloped up- 
wards to the dorsal margin. 
D’Orsieny. Voy. Amér. Mérid., pl. 18, f. 1, 2. 

APLYSIA NIGRA. 
THE 

Species 16. (Fig. a, 6, Mus. Cuming in Brit.) 
Apiysia Japonica. Apl. testd oblique ovatd, sub- 
pellucida, obscuré castaned, intis vix calcared, 
dorso ad medium tumida, prope marginem dor- 
salem subcostato et canalifero ; apice elevato, valde 
incurvo, biauriculato ; margine superiori declivi, 
profunde excavato, brevi, ad terminum rotundo ; 
labio externo rotundo, margine inferiort sub- 
quadrato, margine dorsali subarcuato. 
Tue Japan Aptysia. Shell obliquely ovate, subpellu- 
cid, obscure chestnut, within very little calcareous, 
back tumid in the centre, with a slight rib and 
depression near the dorsal margin ; apex elevated, 
much ineurved, biauriculated; uppermargin sloped, 
deeply excavated, short, rounded at the end ; outer 
lip round, lower margin subquadrate, dorsal 
margin a little arched. 
SoweErsy. 
Hab. Japan. 
The biauriculated character of the apex is produced 
by the curving of the lateral margins on each side. 


(Mus. 2) (Copied.) 
Aprysta FasciaTa, Api. testd solidiusculd, latd, obliqué 
subquadratd, tumidd, arcuatd, pallidée fusca, intis 
Species 17. 
testaced, leviter concentricé strigatd ; apice elevato, 
incurvo, calloso ; margine superiori brevi, leviter 


excavato ; lubio externo convexo, antice producto ; 
margine inferiori late excavato ; margine dorsali 
incrassato, subcalloso. 
Tur BANDED AptysiA, Shell rather solid, broad, ob- 
liquely subquadrate, tumid, arched, pale brown, 
testaceous within, lightly concentrically striped ; 
apex elevated, incurved, callous; upper margin 
short, slightly excavated; outer lip convex, pro- 
duced anteriorly ; lower margin oblique, widely 
excavated ; dorsal margin thickened, rather callous. 
Porrér. Voyage en Barbarie, pl. 6, t. 2, p. 2. 
Dolabella lepus. 
The nearest resemblance to this in form is to be 
found in our Aplysia hyalina, from which, however, it 
will be seen to differ in several respects besides its 
more opaque character. 
Payrandeau. 
Species 18. (Mus. Cuming in Brit.) 
APLYSIA ORIENTALIS. Apl. testa ovato-subtrigond, 
solidiusculd, castaned, ad medium dorsi tumidd, 
ints caleared; apice elevato, biauriculato ; 
margine superiori declivi, via excavato, ad ter- 
minum obtuse angulato; labio externo supra 
rectiusculo, infra rotundo ; margine dorsali recto, 
elongato ; margine inferiori rotundo. 
THE ORIENTAL ApLysta. Shell ovate-subtrigonal, rather 
solid, chestnut, tumid in the middle of the back, 
calcareous within; apex elevated, biauriculated ; 
upper margin sloped, scarcely excavated, obtusely 
angular at the end; outer lip rather straight 
above, rounded below; dorsal margin straight, 
elongated; lower margin round. 
SowErsy. 
Hab. Chinese Seas. 
This shell nearly resembles Aplysia punctata in form, 
although less triangular. It has a slight bluish tint 
in colouring. 

Species 19. (Mus. Cuming in Brit.) 
ApLystIA GUADALOUPENSIS. Apl. testd unguiformi, sub- 
compressa, pallide flavescenti, radiatim distanter 
subfoveolatd, concentricé eleganter striata, int&s 
testaced, pallidé rosea ; apice acuminato producto, 
reflexo, incurvo ; margine superiori declivi, reflexo, 
August, 1869. 
