Polycera tricolor
Robilliard, 1971

Suborder: DORIDINA
Family: Polyceridae


British Columbia, Canada to Baja California, Mexico


San Clemente Island, Southern Channel Islands, California. 80-120 feet. Photos: Bruce C. Wight

Translucent white with 5-10 frontal appendages and 4-6 extrabranchial appendages on each side. The frontal appendages have a black base, a yellow midregion and an opaque or translucent white upper third. The extrabranchial appendages have a black basal half, then an yellow band and an opaque white tip. The rhinophores are similarly coloured. There is a yellow band down the dorsal midline from the gills to the posterior tip of the foot, and in some animals the foot can have a yellow border. It grows to about 20mm in length.

• Robilliard, G.A. (1971) A new species of Polycera (Opisthobranch: Mollusca) from the northeastern Pacific, with notes on other species. Syesis 4: 235-243.

Authorship details
Rudman, W.B., 2001 (June 1) Polycera tricolor Robilliard, 1971. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/polytric

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