26 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 25 



Family Dorvilleidae 



Dorvillea articulata (Hartman) 1938. See Hartman, 1944a, p. 189. 

 Central and southern California, littoral to 50 fms. 



Dorvillea gracilis (Hartman) 1938. See Hartman, 1944a, p. 189. Cen- 

 tral and southern California, littoral in very shallow sands. 



Dorvillea moniloceras (Moore) 1909. See Hartman, 1944a, p. 190, and 

 Berkeley and Berkeley, 1948, p. 88. Central and southern Cali- 

 fornia, associated with red coralline algae. 



Ophryotrocha puerilis Claparede and Metschnikow, 1869. See Hartman, 

 1944a, p. 191. Southern California, intertidal; cosmopolitan in 

 warm seas. 



Family Myzostomidae 



Myzostomum deani McClendon, 1906. Pacific Grove, California. 

 Myzostomum fisheri Wheeler, 1905. Southern California, in coelomic 

 cavity of a starfish. 



Family Orbiniidae 



Califia calida Hartman, 1957. Southern California, in slope and basin 



depths, silt. 

 Haploscoloplos elongatus (Johnson) 1901. See Hartman, 1957, p. 273. 



Northeastern Pacific Ocean south to western Mexico; very com- 

 mon in intertidal to slope depths, silts and mixed sediments. 

 Haploscoloplos panamensis Monro, 1933. See Hartman, 1957, p. 277. 



Alaska south to Pacific Panama, in shallow depths. 

 Naineris dendritica (Kinberg) 1867. See Hartman, 1957, p. 299. 



Northeastern Pacific, south to southern California; littoral, in 



eel grass roots and mixed sediments. 

 Naineris nannobranchia Chamberlin, 1919. See Hartman, 1957, p. 303. 



Mendocino, California ; rare. 

 Naineris cf. quadricuspida (Fabricius) 1780. See below. 

 Naineris uncinata Hartman, 1957. See Hartman, 1960a, p. 107. Alaska 



to southern California, not common ; sandy or eel grass bottoms ; 



in depths to 440 fms. 

 Orbinia johnsoni (Moore) 1909. See Hartman, 1957, p. 257. Central 



and southern California, in sandy silt, especially in protected bays. 



