70 TETHYS—EUROPEAN. 
NANT, B. Zool., iv, p. 35, pl. 21, f. 21.— Aplysia depilans GMEL.., Syst. 
p- 3103.— Rane, Hist. Nat. Aplys, p. 62, pl. 16, 17.—VayssIERE, 
Rech. Moll. Opistobr., p. 65, f. 51-58 (anatomy).—BLocHMANN, 
Mittheil. Zool. Stat. Neapel, v, p. 32, pl. 3, f 2,5, 10 (anat.).— 
ZuccaRDI, Boll. Soc. Nat. in Napoli, (1), iv, p. 6, pl. 1, f. 1, 4, 10, 
18, 15; pl. 2, f. 25-29 (teeth and jaws)— Warson, Challenger Gas- 
trop., p. 673.—Monrs., J. de Conchyl., 1877, p. 46.— Tethys lima- 
cina LINNE, Syst. Nat., 10, p.653, teste Linné, S. N., 12, p. 1082.— 
? Dolabella fragilis Lam., An.s. Vert., vi, 2me pt., p. 42 (1822).— 
? Aplysia “major” LANKESTER, Philos. Trans., clxv, 1875, p. 13 
(embryology).—A. petersoni Sows., Genera of Shells, Aplysia, fig. 
1.—? Dolabella lavis Buarny., Dict. Se. Nat., xiii, p. 395.—A plisia 
leporina DELLE CutaJsE, Memorie, pp. 28, 41, 71, pl. 2, 4,5 (1823). 
—Aplisia poliana DELLE CuIaJE, t. ¢., p. 30,73, pl. 3, f. 1.—A. poli 
DELLE CHIAJE, t. ¢., p. 72.—A. vulgaris Buatnv., Man. de Malacol., 
p. 472, referring to Journ. de Phys., Vol. 96, fig. 8 (1825). 
The large orifice in the mantle over the shell, surrounded by 
brown rays, and the posteriorly united swimming lobes are charac- 
teristic. 
T. punctTaTa Cuvier. Plate 30, figs. 1 to 11. 
Length 7-15 em. but mostly smaller; form about as in 7. depi- 
lans. Swimming lobes completely united behind as far forward as the 
excurrent siphon, not very ample. Upper surface of mantle irides- 
cent, with a large, oval orifice leading into shell-cavity ; edge with 
purple glands as in 7. leporina, and unicellular glands with granu- 
lar contents, probably slime glands. Behind the genital open- 
ing is a group of one-celled glands as in 7. depilans. 
Color purplish-black, brownish or greenish-brown, always closely 
spotted with pale rounded dots and small spots, which usually show 
some opaque white specks. 
Alcoholic specimens (well preserved) are gray (produced by 
minute ashy speckling on a clear ground) with pale spots, the lobes 
darker, their inside edges with alternating dark and light bars, man- 
tle brown. Occasionally all pigment is lost. 
Shell quite convex, pale yellow outside, ovate, the outer margin 
hardly angular ; beak well incurved ; calcareous layer nearly coex- 
tensive with the membranous, and moderately strong. 
Mediterranean and Adriatic Seas; Atlantic from Norway and all 
British coasts, to the Canaries. 
