NEPHTYIDAE FROM NORTHEAST PACIFIC — HARTMAN 



147 



thought of as a geographical, southwest American subspecies of N. 

 cirrosa. There are several significant differences between the two 

 species: (1) Recurved cirri are present from the third setiger in iV. 

 magellanwa, from the fourth setiger in N. cirrosa; (2) the proboscis 

 is proximally smooth in N. magellanica^ prickly in N. cirrosa (cf. 

 Ehlers, 1868, pi. 23, fig. 6) ; (3) N. rnagellanica consists of 120 to 150 

 segments, N. ciri'osa of 90 to 95 segments. 



Figure 62. — Nephtys magellanica Augener : a. Outline of dorsal surface of prostomlum ; 

 h, third parapodium in anterior view ; c, thirty-sixth parapodium in anterior view ; 

 d, sixtieth parapodium in anterior view. 



Figure 63. — Nephtys caecoides, new species : a, Prostomium and first segment in dorsal 

 view (from an individual with proboscis protruded) ; 6, same, from an individual with 

 proboscis retracted) ; c, portion of a bristled postlamellar seta seen somewhat from 

 the side ; d, same, in face view ; e, third parapodium in anterior view ; f, neuropodium 

 of fiftieth setiger in anterior view ; g, twenty-fifth parapodium in anterior view ; h, 

 fifteenth last parapodium in anterior view. 



