NO. 3 HARTMAN : POLYCHAETOUS ANNELIDS 229 



Genus PERINEREIS Kinberg 

 Perinereis monterea (Chamberlin) 



Nereis (Neanthes) monterea Chamberlin, 1918, pp. 174-175. 



Nereis monterea Berkeley, 1935, pp. 769-770. 



Perinereis monterea Hartman, 1936, p. 32. 



Nereis spinifera Tread well, 1929, pp. 5-6, figs. 15-20. 



Collections. — Numerous specimens, probably collected from southern 

 California, but lacking more complete data, in the collections of The 

 University of Southern California. 



Length to 65 mm; width to 4.5 mm; number of segments 100 to 130. 

 Color in life pale with reddish-brown pattern, a quadrate patch on the 

 middle dorsum of each segment, darkest and most extensive on the an- 

 terior segments and becoming paler posteriorly. 



Paragnaths are dark brown. Area I has a single, stout conical cone; 

 area II has about 6 cones in 3 transverse rows; area III has numerous 

 points in 4 transverse series ; area IV has numerous cones in an elongated 

 patch ; area V has a single, stout tooth ; area VI has one transverse piece ; 

 areas VII and VIII form a continuous band of several rows of larger 

 paragnaths. 



Nereis spinifera Treadwell (1929, p. 5) from Puget Sound is prob- 

 ably the same. Its description agrees reasonably well with that for P. 

 monterea (Chamberlin). 



Genus PLATYNEREIS Kinberg 



Platynereis polyscalma Chamberlin 



Plate 38, Figs. 76-83 



Platynereis polyscalma Chamberlin, 1919, pp. 219-226, pi. 30, figs. 5-8, 

 pi. 31, figs. 1-10, pi. 32, figs. 1, 2; Horst, 1924, pp. 186-187; 

 Monro, 1931, p. 18; Fauvel, 1931, pp. 23-25, pi. 3, figs. 1-6; 

 Fauvel, 1932, pp. 114-116; Hartman, 1938, p. 15. 

 Platynereis integer Treadwell, 1920, pp. 595-597, figs. 1-4. 



Collections.— ^-Z2>, 11-33, 13-33, 495-36, 503-36, 622-37, 639-37. 

 Numerous specimens. 



The atokous stage has heretofore been unknown. It is, therefore, of 

 interest to find it in the collections. The following description is based on 

 individuals from stations 495-36, 503-36, 639-37. 



Length to 50 mm; number of segments 70 to 100. Pale (presei-ved) 

 except for black eyes. These have white opaque areas (pi. 38, fig. 76) as 

 typical of the epitokous stage. Parapodia, particularly in the posterior re- 



