NO. 3 HARTMAN : POLYCHAETOUS ANNELIDS 241 



Nephthys caecoides Hartman, ferruginea, new subspecies 

 Plate 42, Figs. 110-114; Plate 43, Fig. 115 



Nephthys caecoides Hartman, 1938, pp. 148-149, fig. 63. 



Collections.~?,19-35, 492-36, 820-38, 823-38, 834-38 (Holotype), 

 876-38. 24 specimens. 



No individuals are complete. Length of 46 anterior segments is 30 

 mm ; the greatest width, at segments 10 to 13, is 3 mm. The anterior end, 

 through about the first 15 segments, is distended, barrellike, deeply pig- 

 mented with a rust-colored pattern consisting of transverse bars across the 

 middle of the segments and longitudinal stripes at the sides (pi. 43, fig. 

 115). The proboscis has 22 rows of papillae and a median dorsal papilla. 

 It is smooth proximally. 



Recurved cirri are directed laterally. They are first present from the 

 third setigerous segment and continue posteriorly to the ends of the pieces. 

 They are broad, flattened, but not foliaceous, and terminate in blunt tips 

 (pi. 42, figs. 110-112). The dorsal cirri are slender and notably longer 

 than is typical for TV. caecoides Hartman (1938, p. 147). 



The acicular lobes are bilobed in anterior segments (pi. 42, figs. 110, 

 111). Neuroacicular lobes in posterior segments are conical (pi. 42, fig. 

 112). Setae resemble those in N. caecoides. The barred setae are slenderer 

 (pi. 42, fig. 114) than the spinose setae, their thickness less than half that 

 of the latter. The spinose setae (pi. 42, fig. 113) have extensive serrula- 

 tions, extending nearly across the width on the outer side, where best de- 

 veloped. Lyre setae are absent. 



N. caecoides ferruginea differs from the type species in that the re- 

 curved cirri are first present from the third segment instead of the fourth ; 

 the posterior neuroacicular lobes are conical; the anterior region, through 

 about the first 15 segments, is distended; the dorsal pigmented pattern is 

 more extensive. 



Holotype.— AH F no. 29. 



Distribution. — Peru, north to Anacapa Island, southern California. 

 In 10 to 45 fms. 



Family GlyceHdae 



Key to Genera 



Parapodium with a single aciculum and only composite setae, with 

 one presetal and one postsetal lobe; branchiae absent; support 



of jaw (aileron) a simple, rodlike structure 



HEMIPODUS, p. 242 



