MOLLUSC A — GYMNOBRANCHIA. 
143 
teen new species of Nudihranchia, which were found at Cullercoats, on 
the coast of Northumberland. (Ann. ix. p. 31.) They detected eyes in 
young individuals of Doris repanda and Goniodoris nodosa, behind 
the dorsal tentacula ; the greater opacity of the skin generally prevents 
their being observed in older individuals. The new species are : — 
Doris aspera ; body depressed ; white or yellowish ; cloak filled with 
spiculas, and covered with obtuse tubercles ; branchiae consist of nine 
small simply pinnated transparent white plumes ; 2). depressa ; 
body much depressed, of a pale sandy colour, spotted with orange or 
reddish-brown ; cloak covered with delicate pointed papilla, and having 
spiculae arranged transversely across the back ; ten or eleven simple 
branchiae in a horse shoe form ; D. repanda ; cloak covered with 
minute white granular tubercles ; a row of sulphur yellow spots on each 
side ; branchiae consist of four or five broad tripinnate transparent white 
plumes. D. similis ; body rather convex, with numerous conical white 
papillae ; branchiae of nine narrow transparent white plumes, tripinnate, 
with a strong denticulated central rib. 
Polycera ocellata; greenish black, with irregular ocellated spots of 
pale yellow ; veil interrupted in front, continued along the sides of the 
head and back in an elevated ridge with scalloped edges, and terminating 
in two or three lobes or tubercles on each side behind the branchiae ; 
branchiae three or four large flocculent plumes, tripinnate ; Triopa 
nothus, Johnston, may be the young of this species. 
Tritonia felina ; rough with small warts ; spotted with reddish-brown 
and white ; branchiae stout, two or three times branched, six on each 
side of the back ; 1". Considered distinct from T. arhorescens, Cuv. 
T. pulchella ; rose coloured, with small opaque yellowish tubercular 
spots ; five pair of branchiae, the front ones consisting of three branches. 
Melibcea ornata; pale yellow, with pink streaks and spots; very much 
resembling M. coronata, Johnst. 
Eolis rosea ; white, tinged with rose colour and butf on the back ; 
branchiae arranged in fifteen or sixteen close-set transverse series, five 
or six in each on the sides of the back. E. obtusalis ; ochrey-yellow, 
with reddish-brown blotches on the head and back ; about twelve rows 
of branchiae. E. aurantia ; buff-coloured ; ten or eleven rows of 
branchiae. E. olivacea ; pale yellow, sprinkled with white and orange- 
red or brown ; six or seven rows of branchiae. E. hysty'ix ; white, with 
olive brown spots on the back, and a row of large blotches of the same 
along the sides ; six or seven rows of branchiae. E. vittata ; pale buff 
speckled with fawn colour ; head rather large and truncated in front ; 
six or seven rows of branchiae. E. pallida ; whitish-yellow, with white 
and rose-coloured spots ; branchiae crowded. E. mimita ; yellowish- 
white ; branchiae few; in about two clusters. E. nana ; yellowish; 
brauehife in seven or eight rows. 
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