108 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 15 



chiefly characterized for having a long, erect lobe at the superior edge 

 (fig. 1) ; this is first visible at about segment 18 as a tongue-like process 

 at the upper end of the setal fascicle; it continues farther back to about 

 segment 60 and is absent thereafter. The presetal lobe is short, the 

 acicular lobe is conical and the postsetal lobe is longer, broader and 

 lamellar. Preacicular setae are barred; postacicular setae are delicately 

 toothed. Furcate setae are believed absent. The proboscis remains un- 

 known. 



Distribution. — N. monroi is known only from Taboga Island, Paci- 

 fic side of Panama in 6-12 fms on a muddy bottom. 



Nephtys incisa Malmgren 



Fauvel, 1923, pp. 369-370, fig. 144: Not Treadwell, 1914, p. 193. 



Collections. — Gullmar Fjord, Sweden (several) ; Plymouth, Eng- 

 land (1). 



Specimens from southern California reported as N. incisa (Tread- 

 well, 1914, p. 193) go to N. magellanica (above). I know of no other 

 record of its occurrence in the eastern Pacific. It is recorded, however, 

 from eastern America (Sumner, et al, 1913, p. 619). 



Distribution. — Eastern United States and western Europe. 



Nephtys phyllocirra Ehlers 



Nephthys phyllocirra Ehlers, 1887, pp. 131-134, pi. 38, figs. 7-11; 

 Augener, 1918, pp. 164-165. 



Material examined. — Type specimen no. 62 in the Museum of 

 Comparative Zoology, Cambridge, Massachusetts. 



The single specimen is posteriorly incomplete and has the proboscis 

 retracted and not dissected; it measures 31 mm long for 46 segments, 

 4.0 mm wide with and 2.1 mm without parapodia at the widest part 

 or eighth segment. The specimen is now so hardened and brittle that 

 the parts of the proboscis cannot be distinguished; also, the setae are 

 broken off and the fleshy parapodial lobes have been rubbed away so 

 that these parts cannot be discerned. Heavy yellow acicula project from 

 the conical acicular lobes for a considerable distance, but perhaps ab- 

 normally since they were not first described. 



The prostomium is small, pale and lacks eyespots. The proboscidial 

 jaws are black, blunt, triangular pieces. According to Ehlers, the terminal 

 papillae number 22 bifid ones and there are 22 rows subterminally. 

 Interramal cirri are first present from the sixth, and much larger on 

 the seventh segment. They are weakly recurved or directed ventrally, 



