Section 2. With 2 postétior lateral'gàstro-hepmï'é vess'eïs ;
2 external orifices-.
reproductive organs with
GEN.
Fam. 13.
Fam. 14.
F ionidas. Tentacles 4 simple r branchi® . fapillose, numerous; 1
amis latero-florsal; month with jaws • • J
f44. Hermaea.
T e n ta c le s« , dorsal;, branch!® papillose; anus 4 5 . stili^et.
dorsal; no jaws. • [_46. Alderia.
Sub-Order—Peleibranchiata, A. and II.
. Without special branchiae ; shin without spicula.
Tribe 1. Body limaciform.
Fam. 15. Elyham. Tentacles 2 or 4 ; body furnished with 2. lateral "I plaoobr8nchns.
expansions or folds ; gastro-hepatic system, much branched; 1 _ E,ysia
anus latero-dorsal, in front of thé heart ; no jaws
Fam. 16. Limaiohtixdjs. Tentades 2, or wanting; back without appen- 149. Acteoma.
dages ; anus dorsal, posterior ; no jaws . . J 60. Limapontia.
T r ite 2. Body cylindrical or compressed.
Fam. 17. Phyilirrhoim. Tentades 2, dorsal, linear, retractile; b e a d | 61. pjjyiiirrhioe.
distinct; tail compressed ; month with jaws ; anus lateral J
SYNOPSIS OP THE GENEE A.
Sub-Order—A c a n t h o b r a n c h ia t a .
Fam. 1. Dorididee.
Gen. 1. Dorns, Linn. Body depressed; doak covering the head and foot;
branchise united at the base and retractile.within a cavity;
dorsal tentades laminated; with oral tentacles. Tongue broad,
with numerous spines in each row
a. Dorsal tentacles conical; oral tentacles tubercular; cloak
with hard spiculose tubercles. Lingual spines simple,
uniform ; no central spine
b. Dorsal tentacles conical; oral tentacles tubercular; cloak
with soft tubercles. Lingual spines long, linear, obtuse,
denticulated; no central spine
c. Dorsal tentacles clavate; oral tentacles linear. Ungual
spines o f two forms; no central spine
TYPE.
D. tuberculata, Cuv.
D. Zetlandica, A. & H.
D. Johnstoni, A. & H.
d. Dorsal tentacles linear ; oral tentacles angular, flattened.
Lingual spines denticulated ; a small central spine. Mouth
with a spinous collar .
e. Dorsal tentacles conical, partially retractile, and protected
by leaf-like appendages; oral tentacles linear or
tubercular; branchiae linear, simply pinnate; cloak with
large tubercles. Ungual spines simple, uniform ; no central
spine. Glossodoris, Ehr.
f . Dorsal tentacles conical; oral tentacles leaf-shaped;
branchiae each with several pinnate rays branching from
a footstalk; cloak very large, flat, and coriaceous. Ungual
spines ? Actinodoris, Ehr. .
g. ? With only two tentacles; branchiae in front of the anus,
not surrounding it. Ungual spines? Actinocyclus,
Ehr. . . .
h. ? Dorsal tentacles truncated; branchiae small; cloak large,
carinated on the back. Ungual spines ? Atagema, Gray.
Gen. 2. Chromodoris, A. and H. Body subquadrilateral; cloak narrow,
exposing the foot, smooth; dorsal tentacles laminated,
retractile within plain or raarginated cavities; oral tentacles
conical or tubercular; branchiae linear, simply pinnate^
retractile % '■ ■> Tongue ? - . . ,
Gen. 3. Lamellidoris, A . and H. Body depressed; cloak large; dorsal
tentacles laminated; head with a veil; no oral tentacles;
branchiae simply pinnate, set in an open circle, non-retractile.
Tongue narrow, with few spines.
a. Body not greatly depressed; cloak with moderate-sized
spicula; spawn of few coils, cup-formed. Tongue with
2 large spines and 2 or more rudimentary ones; usually
a simple central plate
b. Body very flat, with large spicula, symmetrically
arranged; spawn of many narrow coils. Tongue with
2 large broad spines and 2 rudimentary ones ; no central
plate
Gen. 4. Hexabranciius, Ehr, Cloak very large and flat, with an undulating
margin; dorsal tentacles laminated, kneed, retractile
within marginated cavities; oral tentacles large, ovate, with
scalloped edges; branchiae generally in 6 tufts, set separately
round the vent and non-retractile. Tongue ?
Gen. 5. Acanthodoris, Gray. Body convex; cloak with - soft conical
tubercles; dorsal tentacles laminated, retractile within marginated
cavities; oral tentacles leaf-shaped, united into a
veil; branchiae united at the base, non-retractile. Tongue
narrow, with 2 large denticulated spines and 6 or 8 rudimentary
ones; no central plate. A spinous buccal collar, with a
rudimentary under jaw
TYPE.
D. repanda, A. & H.
D. verrucosa, Cuv.
D. cruenta, Q. & G.
A. vetulinus, Ehr.
D. carinata, Q. & G.
D. magnifies, Q. & G.
D. bilamellata, Linn.
D. depressa, A. & H.
H. pretextus, Ehr.
D. pilosa, Müll.