144 NOTARCHUS. 
A, longicauda Q. & G., Voy. Uranie, ii, p. 421, pl. 66, f.8.— Rane, 
Hist. Nat. Aplys., p. 73, pl. 22, f. 8-10. 
? Aplysia brongniartii BLainv., Man. de Malacol., p. 472 (insufhi- 
cient description). 
In this species the neck is quite long, the tentacles pointed ; tail 
extremely long. The general color, in life, is a pleasing green, 
sprinkled with dots of red surrounded with a circle of sky blue, and 
here and there some other whitish and blue spots. Rang could not 
see the labial tentacles in the preserved examples, but the natural- 
ists of the Uranie affirmed their presence in the living animal. 
Section Aclesia Rang, 1828. 
Aclesia Rana, Hist. Nat. Aplys., p. 68. 
Body plump, long oval, with moderately stout, short neck and 
bead and short conic tail. Sole rather broad. Integument of the 
whole upper surface bearing numerous digitate or branched append- 
ages with simple ones among them. Lateral labial processes broad 
and well developed. 
Type A. savignana. 
Allied to the restricted subgenus Notarchus in the plump form, 
but differing in the strongly developed labial processes, wider sole 
and elaborately fringed appendages of the integument. There is a 
certain indistinct arrangement of the larger appendages of the in- 
tegument into about three longitudinal rows on each side of the 
dorsal slit. In Stylocheilus the fore and hind parts of the body are 
more attenuated and longer; but it is rather doubtful whether 
Gould’s group will eventually be held separable from Ac/esia. 
The species are illustrated on plates 41, 42, 43 and 44. 
Distribution, tropical and southern temperate seas. 
Indo-Pacific: N. savignanus, laciniatus, Red Sea, Cape. 
N. glaucus, New Zealand. 
N. areola, Sandwich Is. 
West Indian: N. pleti, dacinulatus. 
N. savienanus Audouin. PI. 42, figs. 23-26. 
Length13 cm. Very plump, with the tail attenuated and acum- 
inate, neck rather thick. Tentacles and rhinophores very short, 
tufted by numerous slender processes ; a similar tuft in the middle 
of the head above, and others distributed at somewhat regular in- 
