. Bulletin. Science; Natural history; Natural history. 1971 NEW SPECIES OF POL YDORA Genus Polydora Hose, IN02 Polydora convexa, new speeies Figure l Material examined: California: Santa Barbara, August 27, 1961 (I), from shells of hermit crabs; Avila, March 3, 1962 (8, TYPE), from shell of Pododesmus macroschisma; Mono Hay, October 24, 1961 (4), May IK, 196! (13), from hermit erah shells and Pododesmus; Cayucos, June 2K, 1961 (5), August 28, 1961 (13), December 19, 1961 (4). March 3, 1962 (4), July 3, 1962 (9), from hermit crab shells, encrusting sponge, holdfast of Mac ro- cys/is, and Dodeca
. Bulletin. Science; Natural history; Natural history. 1971 NEW SPECIES OF POL YDORA Genus Polydora Hose, IN02 Polydora convexa, new speeies Figure l Material examined: California: Santa Barbara, August 27, 1961 (I), from shells of hermit crabs; Avila, March 3, 1962 (8, TYPE), from shell of Pododesmus macroschisma; Mono Hay, October 24, 1961 (4), May IK, 196! (13), from hermit erah shells and Pododesmus; Cayucos, June 2K, 1961 (5), August 28, 1961 (13), December 19, 1961 (4). March 3, 1962 (4), July 3, 1962 (9), from hermit crab shells, encrusting sponge, holdfast of Mac ro- cys/is, and Dodecaceria colonies; Bodega Harbor, March 3, 1970 (3), from Podoilesmus; Bodega Bay, September 30, 1970 (6), from Bryozoa, dredged in 20 m; Eureka (Trinidad Head), June 21, 1962 (10), from Balanus and hermit crab shells. Description: Specimens of P. convexa from Bodega Harbor which were relaxed prior to preservation are largest in the collections and measure up to 30 mm in length and have over 200 segments. Speci- mens collected from other localities are somewhat smaller, ranging in size from mm (45 segments) up to 15 mm (160 segments), Live individuals are light tan with occasional dark pigment on anterior body segments. This pigment may be a vestige of larval Figure I. Polydora convexa, new species: a, anterior end in dorsal view; b-c, spines from setiger 5; d. pen- noned companion seta from setiger 5; e. hooded hook from an anterior setiger; f, hooded hook from a poste- rior setiger; g, specialized notopodial structure from a posterior setiger; h, posterior setiger in anterior view with specialized notopodial structure in place; i-j. posterior segments in dorsal view. I he prostomium it bifid on il ant* rioi n (Fig. la). I he i arum le i • tends to ihi border of setiger 4. ["hen il no nuchal i.' Eyes may be absent, bui when presenl Ihi four cyc» are arranged in a trapezoidal mannci with the posterior pair closer together and imallci than the ant
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