Abstract

Acteon (Rictaxis) punctocoelata (Carpenter) is a primitive opisthobranch mollusc found sporadically in central California bays. The primitive nature of this genus is indicated both geologically and morphologically (Fretter and Graham, 1954 and Morton, 1958). This micro-phagous browser burrows just below the surface of the sandy mudflats, as do its close relatives Harninea, Scaphander, and Philine (Fretter and Graham, 1954). Its strong, sculptured external shell is approximately 1/2 inch long and is encircled with narrow black· bands that follow the whorls around the white shell (Fig. 1).

Degree

MS

College and Department

Plant and Wildlife Sciences

Rights

http://lib.byu.edu/about/copyright/

Date Submitted

1972-08-01

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/Letd128

Keywords

Mollusks; Larvae

Language

English

Included in

Life Sciences Commons

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