76 TETHYS—ANTILLEAN. 
Shell large, much dilated, a little diaphanous, amber colored out- 
side, with a visible enamel within; posterior sinus deeply arcuate ; 
beak recurved, triangular, thick and calloused. Alt. 42 mill. 
Strait of St. Iago, Cape Verde Is. (Rang); Bermuda ?, Bahamas ? 
Florida ? 
Aplysia dactylomela RANG, Hist. Nat. Aplys., p. 56, pl. 9 (1828).— 
RocuHEBRUNE, Nouv. Arch. du Mus., 1881, p. 264. 
A. ocellata Ors., Hist. Nat. des Iles Canaries Moll., p. 44, pl. 5, 
f. 1-4. 
A. equorea HEILPRIN, Proc. Acad. Nat. Sci., Phila., 1888, p. 325, 
pl.16,f.2; and The Bermuda Islands, p. 185, pl. 15, f. 2a, 2b (1889). 
Conf. Dosson, Journ. Linn. Soc., xv, p. 159. 
Like T. leporina, this species has a minute, tubular foramen over 
the shell. 
Several east and west Atlantic forms agreeing in the marking of 
dark rings and the minute, tubular orifice in the mantle, may best 
be included as varieties under dactylomela until they are shown to 
have differential features of value. 
Var. OCELLATA Orbigny. Plate 31, figs. 12, 13, 14, 15. 
Length 33 cm. Elongated, flabby, very fleshy, thick, enlarged 
behind; neck long; mouth encircled by rather wide lips and large, 
thick buccal appendages, depressed and convoluted at their ends; 
tentacles stout, short, conic ; eyes small, placed in front of the ten- 
tacles. Swimming lobes large, equal, thick, united behind. Mantle 
large, without orifice above, ending posteriorly in a wide, thin tongue, 
sometimes greatly extended. Gills foliated in regular branches, 
which sometimes are extraordinary prolonged. Foot narrow, folded, 
strongly contracted at neck, and acuminate behind. 
Colors: The sides, neck and head are marked by ocellations of 
black violet which surround a yellow spot subdivided by crack-like 
lines. The intervals between ocellze are yellow, subdivided in the 
same way with black-violet lines. On the head, in front of the 
tentacles, are two more regular ocelli. Tentacles and buccal append- 
ages are zebra-striped with the same color on a yellowish ground, 
more or less violet tinged. Parts bordering the foot visibly violet. 
Inside of lobes clear violet, marked with indistinct longitudinal 
lines. Mantle violet, with yellow spots divided by lines; and there is 
one rounded black spot, surrounded by a marginal band of very 
deep violet. The gills are clear rose-violet. Foot rose color. 
