159 
collection ; it measures 40 mm. in length, whereas the con- 
tracted body of our type barely reaches 30 mm. We have 
much pleasure in dedicating this beautiful species to Dr. J. C. 
Verco. 
EXPLANATION OF PLATES. 
Plate 1. 
Fig. 1. Ceratosoma beeyicaudatum, Abraham — Deep-water 
form. Dorsal view. Sliglitlv enlarged. 
Fig. 2. Ceratosoma brevicaudatum, Abraham — Deep-water 
form. Side view. Slightly enlarged. 
Fig. 3. Ceratosoma brevicaudatum, Abraham — Shallow-water 
form. Natural size 
Fig. 4, An enlarged branchia of C. brevicaudatum, Abraham. 
Plate II. 
Fig. 1. Nembrotha verconis, spec. nor. — Side view. x 2. 
Fig. 2. Nembrotha verconis, spec. nov. — Ventral view, x 2. 
Fig. 3. A single row of teeth from the radiila of N. verconis, 
spec. nov. 
Plate III. 
Fig. 1. Halgerda graphica, spec. nov. — Dorsal view. x I3. 
Fig. 2. Halgerda graphica, spec. nov. — Ventral view x H. 
Fig. 3. Teeth from the radnla of H. graphica. 
Fig. 4. Enlarged teeth from the radula of H. graphica. 
Plate IV. 
Fig. 1. Albania verconis, spec. nov. — Dorsal view. x 3. 
Fig. 2. Albania verconis, spec. nov. — Ventral view. x 3. 
Fig. 3. Teeth from the radnla of A. verconis. 
Fig. 4. Radula of A. verconis, the cross lines representing 
transverse roAvs of teeth. 
Plate V. 
Fig. 1. Archidoris varia, Abraham — Dorsal view, x If- 
Fig. 2. Archidoris varia, Abraham — Ventral view. x If • 
Fig. 3. Teeth from the radula of A. varia. 
Fig. 4. An enlarged branchia of A. varia. 
Fig. 5. Radula of A. varia. 
Plate VI. 
Fig, 1, DoRiopsis carneola, Angas — Ventral view. xH* 
Fig. 2. DoRioPsis carneola, Angas — Dorsal view, x 14 
Fig. 3. Archidoris staminea, spec. nov. — Ventral view, x 2^. 
Fig. 4. Archidoris staminea, spec. nov. — Dorsal view, x 2^. 
Plate VII. 
Fig. 1. Hypselodoris epicuria, spec. nov. — Dorsal view, x 3. 
Fig. 2; Hypselodoris epicuria, spec. nov. — Ventral view, x 3. 
Fig. 3. An enlarged branchia of H. ej)icuria. 
Fig. 4. DoRiopsis .\UREA, Quoy & Gaimard — Dorsal view. 
X 5 3-5. 
Plate VIII. 
Fig. 1. Alloiodoris marmorata, Bergh — Dorsal view. x 3^. 
Fig. 2. Alloiodoris marmorata, Bergh — Ventral view, x 3^. 
