85 
of Edinburgh, Session 1880 - 81 . 
Tentacles about sixteen in number, branched, large and small 
alternately, but rather irregular in size ; the tentacle at or just to 
the left of the olfactory tubercle is gigantic. 
Olfactory tubercle distinct, cordate, opening on the right side, 
both ends turned in. 
One specimen from Station 170 (north of the Kermadec Islands, 
South Pacific Ocean), 500 fathoms. 
Culeolus recumbens , n. sp. 
External appearance. — Shape of the body irregularly quadrate, 
with the angles rounded, both ends blunt ; anterior rather narrower 
than posterior, and posterior rather more convex than anterior ; dorsal 
and ventral edges nearly parallel, tapering slightly anteriorly, dorsal 
nearly straight, ventral a- little convex. Stalk attached at the anterior 
end, on the ventral side of the branchial aperture from which it 
turns; it is long, thin, and like a piece of string. Branchial aperture 
terminal and medium ; atrial on the dorsal edge two-thirds of the way 
down, directed dorsally. Surface even and pretty smooth, here and 
there slightly granulated, a band of close-set slight projections form- 
ing a line cutting off about a fourth at the hinder end, from the 
atrial apertures dorsally to the edge of the posterior end ventrally. 
Colour pale yellowish-white. Length of body, 2*5 cm. ; breadth, 
1*7 cm. ; thickness, 1*5 cm. ; length of stalk about 14 cm. 
Test thin but tough, semi-opaque. 
Mantle very thin, closely adhering to test, musculature feeble. 
Bmncliial sac. — Folds very straight. Transverse vessels all the 
same size. Internal longitudinal bars wide. Meshes large, elon- 
gated vertically. Spicules very small but ramifying and numerous. 
Dorsal lamina formed by large triangular languets. 
Tentacles very long, about twenty-four in number, large and 
small alternately. 
Olfactory tubercle small, ellipsoidal, with no aperture. 
Viscera. Three genital glands on each side of cloaca. 
Several specimens from Station 146 (between Cape of Good 
Hope and Kerguelen Island), 1375 fathoms. 
h* 
?OL. XI. 
