PETALIFERA. 131 
Shell thin and transparent, with well-marked but irregular growth 
strie. It is not enclosed by the mantle, and seems to be attached 
by the beak only. 
Nice (collected in September). 
Aplysia brugnatellii Vans. & Ross, Guerin’s Mag. de Zool., 
1836, classe v, pl. 77, f. 1, 2, p.1; Ann. Sci. Nat., 1835, p. 251. 
The species most approaching A. brugnatellii is the A. ferussacii 
of Rang. It is distinguished from that by the depressed, rounded 
tail, and the coloring, dappled with orange dots, ferussacii being 
spotted with black. 
It is notable that this species has buccal appendages such as 
Fischer describes for his Phyllaplysia lafonti. 
P. onnaTA Deshayes. PI. 36, fig. 3. 
Length 35 mill. Dark green above, ornamented with numerous 
oval yellow spots; rhinophores flesh colored, spotless ; anterior ten- 
tacles spotted like the body. 
Algerian coast. 
Dolabella ornata Drsu., Traite Elementaire de Conchyl., ii, p. 57, 
atlas, pl. 89, f. 5—FrReEpox, Le Monde de la Mér. pl. 11, f. 10.— 
Phyllaplysia ornata FiscuEr, Journ. de Conchyl., 1872, p. 297. 
This form is known by Deshayes figure only, no description hav- 
ing been published. It may prove to be a synonym of A. brugna- 
tellit; indeed I have very little doubt that they are identical. 
Section PseupAptysra Pilsbry, 1896. 
External features as in Petalifera; labial palpi developed. Shell 
ovate claw-shaped, with the sinus obsolete; rhachidian tooth five- 
denticulate, inner lateral with trilobate, the rest with broad bilobate 
cusps. 
Differs from Phyllaplysia in the five-lobed, instead of three-lobed 
median tooth of the radula, and the presence of a well-developed 
shell. From Petalifera it differs in the form of the lateral teeth 
and the oblong shell without a posterior sinus. 
P. pUNCTULATA Tapparone-Canefri. PI. 36, figs. 4, 5, 6, 7. 
Length 17-25 mill., width 6-63 mill. Body flattened, narrow, 
much lengthened, somewhat narrowed behind. Head and neck 
short, anterior tentacles hollow, their bases rather distant, apices 
