[The genus Gampaspe Bergh (2 and 24, pp. 20—24), represented by two small
species from the northern Atlantic, seems to be a section of Dendronotus rather than a
separate genus. It is defined as having the cerata and the processes of the rhinophores
and of the frontal veil simpler and less branched, characters which also appear in D.
robustus.
1. G. pusilla Bergh, a minute (3§ mm.) form with five to six simple papillae on the
veil and four simple digits on the rhinophore sheaths. Four pairs of short stout cerata.
Radula thirty-five rows, each consisting of a central tooth with seven denticles on its side
and from three to five lateral teeth bearing four to five denticles.
2. G. maj(yr Bergh is larger (12 mm.), and as preserved, white with red spots. The
veil with four shortly branched processes. The six pairs of cerata are similar to those
processes but taller. Radula 47 X 9.1.9. The median tooth- as in D. frondosus. Most
of the laterals bear six to seven denticles. The innermost are smaller than the rest, and
the outermost are almost smooth.]
Family III. LOMANOTIDiE.
Most of the characters are as in the Dendronotidas, but the appendages are not ramified.
The mantle-margin bears cerata which are simple (rarely lobed) and often carried
horizontally. They are usually united by an undulating membrane. Hancoclcia is
perhaps most conveniently placed in this family, but is really intermediate between the
Lomanotidas and Dendronotidse.
Genus 1. Lomanotus V£rany.
See Bergh 11, pp. 4—9; Vayssiere 2, pp. 87—91; Eliot 1, pp. 348—353; Coghlan in Ann.
Mag. Nat. Hist., ser'. 8, vol. ii, 1908, pp. 205—218.
A frontal veil with a few digits. Corners of foot produced. Rhinophores perfoliate
and provided with sheaths. The dorsal margin bears a series of papillas of
various sizes which often seem to be united into an undulating curtain. Radula
fairly long and broad (maximum about 32 x 35.1.35)* teeth denticulate on both
sides and somewhat irregularly arranged so that it is not clear if there is a central
tooth or not. Liver system apparently in three parts, one posterior and two lateral.
The diverticula seem to extend into the cerata in some specimens but not in all.
Genitalia unarmed.
I have discussed the synonymy of this difficult genus above, pp. 112—114. Perhaps
three species may be provisionally recognized: 1
1. L. genei VIsrany.
(Pt. 8, PL III, figs. 1—8.)
= L. portlandicus Thompson.
L. hancocki Norman.
L. eisigii Trinohese.
2. Lomanotus marmoratus A. & H.
(Pt. 3, Pam. 3, PI. 7 cl.)
3. L. flavidus A. & H.
(Pt. 6, Pam. 3, PI. 41.)
But it is possible that the last two species will prove to be young forms of the first.
The only recorded exotic species is L. vermiformis Eliot from the Red Sea. This, too,
may be a young form and have been introduced into the Red Sea from the Mediterranean
through the Suez canal.
Genus 2. Hancockia Gosse, 1877.
= Govia Trinchese, 1886.
See Gosse in Ann. Mag. Nat. Hist., ser. 4, xx, 1877, pp. 316—319; Gamble, On Two Rare
British Nudibranchs, ib., ser. 6, vol. ix, 1872, pp. 378—385; Trinchese, Ricerche anatom, sul genere
Govia, in Mem. della R. accad. delle Sci. dell’istituto di Bologna, ser. 5, vol. vii, 1886, pp. 183—191.
Animal elongate. Foot truncate in front. Head with an oral veil bearing digits at
the sides. The rhinophores bear a few perfoliations and are set in long sheaths. On the
dorsal margin are about five lobed processes. Jaws denticulate. Radula triseriate
and much like that of Galvina. Liver in three divisions (two entering the stomach
laterally and one posteriorly) which give off diverticula to the cerata. Cnidocysts appear
to be present. Genitalia unarmed. The hermaphrodite gland, which is formed of: many
globules, fills the posterior part of the body-cavity.
1. H. eudactylota Gosse.
Family IV. SCYLLTEIDiE.
On either side of the back are two papillae or a single lateral wing bearing branchial
tufts. The radula is rather wide; the second stomach is armed with plates; the hermaphrodite
gland consists of a few distinct masses.
Genus 1. Scyllaea L.
This semipelagic genus, which lives on floating seaweed, is said to be wafted occasionally
to our shores. The animals are of singular shape. The foot is narrow; the body is compressed
laterally and bears two large rhinophore sheaths, and on either side of the back
two large papillse. The inner sides of these papillm, as Well as the crest which runs along
the top of the tail, bear branchial tufts.
1. Sc. pelagica L.