138 NOTARCHUS. 
N. LeAcui Blainville. Pl. 61, fig. 59. 
Nearly the size of a fist. Body nearly globular, the foot being. 
an oval area with projecting borders. Dorsal opening ovate, with 
thick borders, nearly symmetrical. Tentacles 4, slit; 2 buccal 
appendages ; a tentacular organ in the middle of the head; no 
trace of a shell. Color yellowish-white, rather translucent, the 
whole upper surface bearing small tentacular appendages, irregularly 
placed. 
Seas of India (Brit. Mus.). 
Bursatella leachii Buatny. (? Brit. Encyclop. Suppl., Art. Mol- 
lusca), Manuel de Malacol., p. 473, pl. 43, f. 6—F (erussac), Dict. 
Classique d’Hist. Nat. ii, p. 588 (1822).—Rana, Hist. Nat. Aplys. 
p: 9: 
This form seems to be allied to N. indicus, but is larger, and the 
head and tentacles are filamentous as in Aclesia. It is known only 
by Blainville’s description and illustration, the latter representing a 
badly preserved specimen with the gill pulled out of the branchial 
cavity. Compare N. gelatinosa Q & G. 
N. oceLuatus Férussac. PI. 41, figs. 17, 18, 19. 
The mollusk for which this name was proposed is known only by 
a very handsome drawing by Van Hasselt, communicated to Férus- 
sac by Temminck. No description is extant, but its form and the 
general disposition of the external parts indicate that the animal is 
a Notarchus. The general contour is sufficiently shown by the fig- 
ures. Color a beautiful yellow, with a horse-shoe shaped series of 
ocelli on the back, each with a blue center and orange ring. They 
apparently encircle the dorsal slit, which was not seen by Van Has- 
selt, probably on account of the small size of the animal. Length 
43 mill. 
Java (?) 
Aplysia ocellata Fér., Rana, Hist. Nat. Aplys., p. 74, pl. 24, f. 2-4. 
N. nupatus Rang. PI. 29, figs. 45, 46. 
Length 36 mill. Animal much dilated and ventricose, length- 
ened and narrowed at the two ends. Integument smooth, dusky- 
greenish, with some scattered pale dots. Dorsal opening quite long, 
narrow, but gaping posteriorly. Foot narrow. (Rang). 
Near the Sandwich Islands, on floating Fucus. (Quoy & Gaim- 
ard). . 
