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DORIDAE 299
stricted. There is only one species in the genus. The genera Cuvieria Rang
and Herse Gistel 1848 (non Oken 181 5) are synonyms.
Cuvierina columnella Rang
Worldwide, pelagic. (43° N. to 42° S.).
Cigar Pteropod
Figure 64m
10 to 14 mm. in length. See generic description and figure. The shell
varies somewhat in shape. C. oryza Benson, C. iirceolaris Morch and cmicellata
Pfeffer are the same. Common.
Suborder GYMNOSOMATA
Pteropods characterized by the absence of shell, pallial cavity and
mantle-skirt; by the presence of a well-developed head, bearing two pairs of
tentacles, of which the two posterior bear rudimentary eyes. Jaws and radula
present. Found pelagic in all seas, and sometimes in great abundance. Rarely
exceed one inch in length. They are carnivorous. Ascend to the surface at
night, and sink to a lower level in the daytime. They are not treated in this
book. The group contains such genera as Pjieuviodennopsis Bronn 1862,
Fneumodernia Cuvier 1805 {=^ Piieiimonoderma Agassiz), Cliopsis Troschel
1854 {= CHonopsis Bronn), Notobrmichaea Pelseneer 1886, Clione Pallas
1774, PaedocUone Danforth 1907, Anopsia Gistel 1848 (= Halopsyche
Bronn and Euribia Rang).
Order NUDIBRANCHIA
(Nudibranchs and Sea-slugs)
Superjamily DORIDACEA
Family DORIDIDAE
Branchial plumes in an arc or circle usually joined together at their bases,
usually retractile into a cavity. Rhinophores always with a perfoliate club.
Pharyngeal bulb never suctorial.
Genus Archidoris Bergh 1878
Body not hard, dorsum granular or tubular; tentacles short, thick, with
an external, longitudinal sulcus. No labial armature. Branchial plumes not
numerous, 3- to 4-pinnare. Center of radula naked, marginal teeth hooked
and bearing minute denticles. Penis and vagina unarmed (without hooks).
Archidoris montereyensis Cooper
California.
Monterey Doris
Plate i6h
I to 2 inches in length. Rhinophore stalks conical, the clavus slightly