POLYCHAETE WORMS, PART 1 195 



lamellae develop on tlie ventrolateral surfaces of the body, although 

 not as large. Parapodia with conical acicular lobes; anterior lamel- 

 lae rudimentary. Notopodial posterior lamellae elongate, ligulatc, 

 foliaceous. Neuropodial posterior lamellae elongated, diagonally 

 curved upward. Branchiae cirriform, siclde shaped, begin on setigers 

 2-4, continuing to near posterior end. 



Biology. — Dredged on bottoms of sand, fine sand and mud, with 

 coral and shells. 



Material examined. — Off Martha's Vineyard, Massachusetts 

 {Fish Hawk Station 865-7, 40°05' N., 70°22' W., 64-65 fathoms, 

 1880; Albatross III, 40°31'N., 67°37'W., 66 fathoms, 1955; 40°09'N., 

 68°58'W., 74 fathoms; 40°20'N., 69°05'W., 58 fathoms, 1957, R. 

 Wigley; Fish Hawk Station 1036, 39°58'N., 69°30'W., 94 fathoms, 

 1881). 



Distribution. — Both sides tropical America, Puerto Rico, off 

 Florida, Alassachusetts, Morocco. In 14 to 120 fathoms. 



Nephtys picta Ehlers, 1868 



Figures 49c, 50, c-/ 



Nephthys picia Ehlers, 18GS, p. 032, pi. 23, figs. 9, 35 (part ?). — -Verrill and 

 Smith, 1874, pp. 54, 289, pi. 12, fig. 57.— Webster, 1879, p. 214; 1886, 

 p. 131.— Verrill, 1881, pp. 296, 300, 317.— Andrews, 1891a, p. 281. 



Nephtys picia Hartman, 1944a, p. 339, pi. 15, figs. 3-4 (as A'', bucera; not fig. 8, 

 -A'', ciliata?); 1945, p. 22; 1950, p. 103; 1951, p. 49, pi. 10, fig. 4. 



Description. — Length up to 60 nun. (up to 300 mm., according 

 to Ehlers), width up to 4 mm., segments up to 100 (138, 

 according to Ehlers). Prostomium (figs. 49(', 50c) squarish, with 

 rounded corners, arched dorsally (not as fiat as A*", bucera) with 4 

 antennae subequal, visible dorsally, the posterior pair only partly 

 hidden by the tentacular segment. Tentacular segment with conical 

 notopodial and neuropodial setigerous lobes, with setae directed ante- 

 riorly, lateral to prostomium, with enlarged rounded lateral neuro- 

 podial lobe witli the ventral tentacular cirrus anterolateral near the 

 neurosetae; without dorsal tentacular cirri. 



Parapodia with acicular lobes bilobed (anterior and middle regions) 

 to low conical (posterior region), with notopodial anterior lamellae 

 low, shorter than the acicular lobes. Neuropodial anterior lamellae 

 with upper part longer tlian the acicular lobe (anterior region) or 

 slightly shorter than the acicular lobes (middle and posterior regions). 

 Posterior lamellae elongate oval, much longer than the acicular lobes. 

 Preacicular setae shorter, barred, tapering to fine tips. Postacicular 

 setae longer, slender, of 2 1-dnds: (1) vSmooth, capillary; (2) finely 

 spinous with coarser spines near basal curved part (fig. 50e,/). Setae 

 rather short (not as long and flowing as in N. bucera), appearing 

 darker basally (similar to A^. incisa). 



