238 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 7 



Augener (1918, p. 159) added to the original description, based on 

 collections from west Africa and a reexamination of the types. This study 

 reveals the presence of postlamellar lobes that are notably shorter than 

 those in specimens from the Pacific (pi. 41, figs. 98, 99) . Also, the bars of 

 the preacicular setae are proportionately broader. These differences, how- 

 ever, do not seem sufficiently basic to warrant the erection of another name. 



Monro (1933, p. 140) questionably referred some fragmentary speci- 

 mens to this species. These agree with the individuals herein noted in 

 having a "long, leaf-shaped, pointed, ventral posterior lamella." Whether 

 or not the dorsal lamella is also long is not made known. 



Distribution. — Off Florida; west Africa; Gorgona Island, Ecuador; 

 Colombia; Gulf of California; Catalina Island, California. Subinter- 

 tidal, to 118 fms. 



Nephthys magellanica Augener 

 Plate 41, Figs. 100-103 

 Nephthys magellanica Augener, 1912, pp. 208-211, figs. 27, 28. 

 Nephthys magellanica Hartman, 1938, pp. 146-147, fig. 62 (synonymy). 



Collections.— 259-3A, 279-34, 285-34, 438-35, 456-35, 530-35, 533- 

 36, 549-36, 577-36, 620-37, 628-37, 662-37, 675-37, 677-37, 692-37, 

 696-37, 702-37, 705-37, 706-37, 725-37, 732-37, 734-37, 747-37, 833- 

 38, ?843-38, 845-38, 870-38, Ace. 600. Numerous specimens. 



The prostomium is broad, spatulate, with a pair of deeply embedded, 

 black eye spots. Some individuals have a dark blotch near the middle (pi. 

 42, fig. 109). The nuchal organs, conspicuous when everted, lie proximal 

 to the first notopodial lobe (pi. 41, fig. 100). The proboscis has a median 

 dorsal papilla and 22 rows distally. It is smooth proximally. 



Recurved cirri are digitiform, present from the third setigerous seg- 

 ment. Setae are long, silky, flowing, including three kinds. The preacicu- 

 lar setae are barred (pi. 41, fig. 101 ) . Postacicular setae are of two kinds. 

 They include numerous long, serrulated setae, with transverse rows of 

 spines limited more or less to the broadest part (pi. 41, figs. 103, 104), 

 and paler, lanceolate, finely denticulated setae (pi. 41, fig. 102) present 

 posterior to the twenty-fifth segment. There is, in addition, a smaller, 

 shorter, postacicular seta, intergrading with these two, in which the 

 exposed bases are finely pilose. 



Specimens from Independencia Bay, Peru (833-38), differ somewhat 

 from the others in that the postsetal lamellae are longer and distally more 

 acute. 



Distribution. — Straits of Magellan, north to southern California; 

 Gulf of California. Subintertidal, to 75 fms. 



