NO. 1 HARTMAN : GONIADIDAE, GLYCERIDAE, NEPHTYIDAE 119 



regions, from shore to 1200 fms (Benham, 1915, pp. 203-205). To it 

 have been referred Nephthys praetiosa Kinberg, 1866, from off the 

 mouth of the La Plata River, N. virginis Kinberg, 1866, from southern 

 South America, N. circinnata Verrill, 1876, from Maine and N. tris- 

 sophyllus Grube, 1878, from the Kerguelen Islands. It has been more 

 extensively reported from the entire Antarctic realm (see Monro, 1936, 

 p. 140). It should be noted, however, that differences, perhaps of sig- 

 nificance, have been described (Benham, 1915, pp. 203-205). 



In the individuals examined, size in length ranges from 25 to over 

 150 mm. A total length of 220 mm has been recorded (Mcintosh, 1885, 

 p. 161). The prostomium is subquadrate, depressed, but not spatulate 

 in front. There are no visible eyespots. The proboscis (everted in some 

 individuals) terminates in 20 bifid papillae and a shorter, middorsal 

 and midventral triangular process. The subterminal papillae are in 22 

 rows with 2 or 3 longer papillae in a row; these abruptly give rise to 

 14 longitudinal rows of smaller ones, with to 5 in a row, and more 

 proximally these divide into 2 or 3 tiny papillae each. The basal or 

 proximal part of the proboscis is smooth. 



The first parapodium is smaller than the others; it is clearly biram- 

 ous with a larger neuropodium directed forward and under the noto- 

 podium. The ventral cirrus is flattened and distally prolonged as a 

 slender tip. Preacicular fascicles in both notopodia and neuropodia are 

 much larger than the corresponding postacicular fascicles; farther back 

 the barred setae come to be increasingly less conspicuous. The first 

 notopodium is merely a rounded prominence, lacking cirri or lobes. 



Interramal cirri are first present from the third, or not until the 

 fourth and very small at first, through 8-10 segments; by segment 21 

 they come to fill the interramal space. They diminish rapidly after the 

 middle of the body but continue farther back as a slender, small involute 

 cirrus to the last few body segments. Its attached notopodial cirrus is 

 broadly foliaceus and extends distally as a slender, inconspicous filament. 



Postsetal lobes in both notopodia and neuropodia come to be large 

 and conspicuous through the anterior half of the body; the notopodial 

 one is incised. The acicular lobe is prolonged at one end (inferior in 

 notopodia and superior in neuropodia) as an auricular process toward 

 which the recurved acicula extend. The notoaciculum is directed down- 

 ward, the neuroaciculum upward, at the recurved tip. 



The numerous specimens examined show some interesting, though 

 perhaps not important differences. In some the superior edge of post- 

 setal lobes is developed as a foliaceous process, between segments 10 to 

 30 ; in others such a process is lacking, or only slightly developed. 



