NO. 3 HARTMAN : POLYCHAETOUS ANNELIDS 239 



Nephthys punctata Hartman 



Nephthys punctata Hartman, 1938, pp. 155-156, fig. 67. 

 Collection. — ?Mission Bay, California. One specimen. 

 Distribution. — Alaska ; California. 



Nephthys assimilis Oersted 

 Plate 39, Figs. 87-88 



Nephthys assimilis Oersted, 1843, p. 33, figs. 93, 100. 

 Nephthys assimilis Moore, 1908, p. 342; Treadwell, 1914, p. 193; 

 Berkeley, 1924, p. 290. 



Collections. — 495-36, 770-38. 3 specimens. 



Long, slender; length of 53 anterior segments is 32 mm. The pro- 

 stomium is rectangular, longer than broad, thin, spatulate. The first seg- 

 ment is prolonged, its parapodia directed anteriorly. A recurved cirrus is 

 present from the fourth setigerous segment, the first already fairly large, 

 exceeding in size its respective dorsal cirrus. 



The anterior neuropodial lobes have a bluntly digitate, superior lobe 

 (pi. 39, fig. 88), which decreases in size after the fifteenth segment and 

 is absent from about the twenty-fifth segment. The notopodial acicular 

 lobe is bifid, the 2 lobes so formed each smoothly rounded, thus differing 

 from the condition in N. hombergii Savigny, where the 2 lobes diverge 

 from one another. The postsetal lamellae of the neuropodia are greatly 

 elongate, thin, foliaceous (pi. 39, fig. 87). Setae include long, spinose in 

 the postacicular fascicles, and barred setae in the preacicular fascicle. Lyre 

 setae are absent. 



Distribution. — Northeast Atlantic; northeast Pacific. Subintertidal, 

 to 15 fms. 



Nephthys panamensis Monro 

 Plate 41, Fig. 105 ; Plate 42, Figs. 106-109 



Nephthys panamensis Monro, 1928, pp. 81-82, figs. 3-4. 



Collections. — 451-35, 499-36. 2 specimens. 



Two anterior fragments, 55 and 37 segments, measure 29 and 16 mm, 

 respectively. Both are brownish yellow, with a pattern of broad, trans- 

 verse dark bands dorsally, a similar pigment distributed on the prostomi- 

 um (pi. 41, fig. 105). On the ventral side there is a dark longitudinal 

 stripe in the neural area, darkest in the anterior, inflated part. The pro- 

 boscis (dissected) has 22 rows of papillae distally. Proximally it is 

 smooth. 



