23 
wards. Oral tentacles longer than the dorsal, and curved forwards, 
grooved and much dilated. Eyes small, black, distinct, sessile in 
front laterally to dorsal tentacles. Mouth with a bilobed veil. Foot 
smooth ; shape same as body. Colour varies ; usually of a dark 
olive-green with sap-green margins, and varied with whitish and 
dusky. Filaments pale. Foot pale greenish-slate, dotted with dusky 
brown and white. 
The eggs are deposited under stones, coiled from right to left. 
{ 13. SypHONOTA BIPES. 
Oblong, smooth, elevately rounded above, compressed towards 
the foot. Neck long. Mantle lobes ample, thin, half the length 
of the animal, and rounded in outline. Dorsal tentacles small, 
grooved, and blunt. Oral tentacles large, strongly dilated, and 
‘united in front, forming a kind of veil, beneath which is the mouth. 
Eyes small, black, somewhat lateral, a little in advance of dorsal ten- 
tacles. Head rather flattened in front, convex in profile, with a 
groove extending from the muzzle along its side and over the back 
of the animal. Siphonal tube very large and prominent, and expand- 
ing outwards. Branchiz exposed when the mantle is thrown on one 
side. Foot narrowed anteriorly, widest posteriorly, and rounded ; 
the foot is double; the posterior portion (of a circular shape) is 
smooth, and projects slightly laterally and posteriorly, béing quite 
distinct from the anterior portion, which is slightly rugose. Shell 
large, thin, flexible. Colour brownish or brownish-olive, veined 
with dusky and clouded with white, or dusky slightly spotted with 
the same. Foot pale ash. 
This species contracts itself when handled so as to form a ball. 
The young are subpellucid. 
The hinder part of the foot is evidently used as a sucker by which 
the animal suspends itself. 
J 14. SypHONOTA GRANDIS. 
Body oblong, smooth, elevately rounded above and rather com- 
pressed along the sides. Mantle lobes thin, rounded, much dilated 
and strongly undulated along the margins. Dorsal tentacles rather 
large, pointed, dilating outwards and grooved. Oral tentacles 
rooved, about same size as the dorsal, with a furrow extending from 
beneath the right one along the neck and terminating on the back, 
between the mantle lobes. Foot elongate narrow, corrugated, and 
projecting posteriorly, where it isrounded. The siphonal tube is on 
the posterior lateral portion of the back, canaliculated and curved, and 
extending above the back. Shell large, covered by a thin membrane, 
ovately rounded, thin, fragile, with rugose lines of growth, a deep 
rounded sinus on the right side near the apex. Apex small and 
callous. Colour purplish brown, pale along the flanks, everywhere 
above densely crowded with minute white dots, which on the sides 
are arranged in circular clusters, forming spots. Foot pale. The 
young are of a very pale colour. 
