NO. 3 HARTMAN : POLYCHAETOUS ANNELIDS 231 



nonymy above). In the female, there are 22 atokous parapodia; segments 

 23 and 24 are transitional, the first 5 having modified dorsal cirri. The 

 posteriormost parapodia have the characteristic ribbed setae as described 

 by Chamberlin; the prostomium is greatly elongated. It w^as at first 

 thought that the atokous specimens from the Gulf of California belonged 

 to another species because of the differences in the parapodia. Since, how- 

 ever, the proboscidial armature (see above) agrees well with that de- 

 scribed by Fauvel (1932, p. 115) and the homogomph falcigerous setae 

 (pi. 38, fig. 83) are much like those in epitokous individuals (pi. 38, fig. 

 81) in which ribbed setae are present, it is assumed that all belong to a 

 single, widely represented species. 



Distribution. — Tropical Pacific; Indo-Pacific. Pelagic, to 15 fms. 



Genus PSEUDONEREIS Kinberg 

 Pseudonereis gallapagensis Kinberg 



Pseudonereis gallapagensis Kinberg, 1866, p. 174; Gravier, 1909, pp. 

 629-633, pi. 16, figs. 15-20; 1910, pp. 102-104, pi. 5, fig. 11, pi. 

 6, figs. 15, 17-20; Kinberg, 1910, p. 52, pi. 20, fig. 3; Fauvel, 

 1932, p. 111. 



Collections.— 11-33, 16-33, 19-33, 154-34, 260-34, 380-34, 837-38. 

 12 individuals. 



The paragnaths are disposed as follows : area I has 1 to 3 cones in tan- 

 dem; area II has 3 rows of pectinae in close, trim series; area III has 4 

 rows of pectinae in close series, the row on the maxillary side the shortest ; 

 area IV has 5 rows of pectinae arranged in a V-shaped mass ; area V has 

 a single stout cone; area VI has a single broad transverse plaque; areas 

 VII and VIII have a single row of paragnaths, those on VIII alternating 

 cones and elongate pieces. Epitokous individuals have 14 anterior para- 

 podia, the fifteenth and sixteenth being transitional. 



Distribution. — Eastern Pacific, from western Mexico south to the 

 Straits of Magellan; Indo-Pacific. Intertidal. 



Genus UNGINEREIS Chamberlin 

 Uncinereis agassizi (Ehlers) 



Nereis agassizi Ehlers, 1868, pp. 542-546, pi. 23, fig. 1. 



Platy nereis dumerilii var. agassizi Monro, 1933, pp. 44-45 (synonymy). 



Uncinereis agassizi Hartman, 1936, p. 32 (synonymy). 



Collections.— \2-33, 66-33, 148-34, 169-34, 177-34, 182-34, 193-34, 

 234-34, 283-34, 364-35, 391-35, 395-35, 495-36, 530-36, 532-36, 549-36, 



