234 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 7 



Nephthys inermis Ehlers 

 Plate 39, Figs. 84-86 ; Plate 40, Fig. 95 



Nephthys (Aglaophamus) inermis Ehlers, 1887, pp. 125-128, pi. 38, figs. 



1-6. 

 Nephthys inermis Fauvel, 1923, pp. 375-376, fig. 147; 1933, pp. 47-50, 

 fig. 3. 



Collections. — 633-37, 863-38. 3 specimens. 



The longest (863-38) is 73 mm long for 85 segments; a posterior 

 piece is lacking. Two smaller individuals (633-37) measure about 30 mm 

 for 81 segments. The prostomium has 4 dark spots disposed in a rectangle 

 near the posterior border. The proboscis is unarmed. 



Recurved cirri are involute, first present from the fourth setigerous 

 segment, though at first minute. By the tenth segment they are much larg- 

 er and nearly fill the interramal space. At the base, on the outer side, 

 there is an elongate papilla, directed laterally (pi. 39, fig. 85). Dorsal 

 and ventral cirri are long, conspicuous throughout (pi. 39, figs. 84-86). 

 Acicular lobes are pointed, conical (pi. 39, fig. 85) ; the acicula are pale 

 amber in color and project from the lobes. Notopodial postsetal lobes are 

 transversely elongate, their greatest width attained in the postmedian re- 

 gion (pi. 39, figs. 84, 86). Lyre setae (pi. 40, fig. 95) are as heavy as, or 

 slightly heavier than, the postacicular setae. 



Distribution. — Off southern Florida; Mediterranean Sea; Gulf of 

 Suez; Gulf of California; Bahia Honda, Panama. Subintertidal, to 53 

 fms. This marks the first record from the eastern Pacific. 



Nephthys lobophora, new species 

 Plate 40, Figs. 91-94 



Collections. — 826-38, 832-38 (Holotype). 2 specimens. 



Two incomplete individuals; the larger (holotype) consists of 92 se- 

 tigerous segments and is 115 mm long. The smaller is in 2 pieces, 59 and 

 20 segments, with lengths 55 and 18 mm, respectively, but incomplete 

 posteriorly. The larger has the proboscis partly protruded. General color 

 is iridescent gray. The prostomium is only slightly darker, the setae yel- 

 lowish, acicula amber colored. 



The prostomium is hexagonal, the nuchal organs conspicuous, elon- 

 gate on the postectal margin. No pigmented pattern or eyes are visible on 

 the preserved material. The proboscis has 22 rows of papillae on its distal 

 part, but no median papilla. On its proximal part there are numerous. 



