30 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 27 



longer than the prostomium and inserted in a broad crescent at the 

 posterior margin of the head lobe. 



Parapodia have 5 kinds of setae: (1) long, slender, capillary setae 

 are present in most fascicles; (2) similarly long, somewhat thicker 

 composite spinigers (Fig. d) occur in anterior, branchial and post- 

 branchial segments; (3) shorter, about as thick composite falcigers 

 (Fig. b) are present in postbranchial parapodia; (4) subacicular bifid 

 hooded hooks (Fig. c) singly in a fascicle are first present from 

 postbranchial segments, and (5) comb setae in postbranchial segments. 

 In addition, thick, rodlike embedded acicula (Fig. e) are pale at the 

 tip and dark in the embedded portion. 



The mandibles are well developed, oblique at the cutting edge and 

 slightly excavate. The maxillae have the following formula : forceps 

 are falcate; II has 6 teeth right and 7 left; III has 7 teeth right and 

 6 left, IV has 5 teeth left, and none on the right side ; carriers are 

 short and narrow. 



The stem species is best known as a Mediterranean and west 

 Atlantic coastal species, where it occurs in sandy sediments in the 

 Zostera zone (Fauvel, 1923, p. 410). Ehlers (1887) recorded it off 

 southern Florida in 230 fms, and Treadwell (1921) described the 

 subspecies from Mangrove Key in southern Florida. The present records 

 are the first from the eastern Pacific Ocean and the sixth species of 

 the genus from California. The specimens originate in depths of 79 

 to 373 meters. 



Marphysa disjuncta Hartman, 1960 



Santa Monica en, in 268 m ( 1 ) . 



Redondo en, south wall, in 57 m (8), north wall, 113 m (4), 

 363 m (1), axis, 422 m (1). 



San Pedro sea valley, in 221 m (7). 



Marphysa conferta Moore, 1911 



Santa Monica en, trawled in 80 m, rocky (1, ovigerous). 

 San Pedro sea valley, in 187 m (1 jv) . 



Family LUMBRINERIDAE 



Lumbrineris acuta Verrill, 1875 



Newport en, in 37 m (2). 

 Santa Cruz en, in 89 m ( 3 ) . 



Lumbrineris bassi Hartman, 1944 

 Newport en, in 272 m ( ? 5) . 



