NO. 13 POLYCHAETOUS ANNELIDS HARTMAN 1 3 



size and form (fig. 2, g) , and (3) falcigerous heterogomph falcigers 

 (fig. 2, h) in neuropodia. There are no homogomph falcigers. 



Neanthes rooscvclti approaches N. cricogmtha Ehlers (1905, p. 29) 

 from New Zealand, in having a large number of paragnaths. It 

 differs, however, in having them disposed otherwise ; also, the poste- 

 rior parapodial lobes differ in being much reduced in this species. . 



It is a pleasure to dedicate this species to the Honorable Franklin 

 Delano Roosevelt, President of the United States, who sponsored the 

 scientific studies made on the Presidential Cruise of 1938. 



Holotype. — U.S.N.M. no. 20427. 



EUNICIDAE 



EUNICE BIANNULATA Moore 



Eunice bianmtlata Moore, 1904, p. 487. 



Eunice longicirrata, var., Hartman, 1938b, p. 97. 



Collection. — Station No. 8-38; 1 specimen. 



Length about 30 mm. ; parapodial segments 2, 3, and 7 pale. Com- 

 posite setae distally bifid ; the stout simple hooks are bifid. Dorsal 

 cirri faintly annulated. 



Distribution. — Western Canada south to southern California; So- 

 corro Island, Mexico. 



EUNICE AEDIFICATRIX Monro 

 Figs. 3, a-b 

 Eunice antcnnata Savigny, aedificatrix Monro, 1933, p. 60. 



Collection. — Station Nos. 3-38, 5-38; 2 specimens. 



An anterior fragment of 83 segments is 36 mm. long and 4.5 mm. 

 wide (station No. 5-38) ; another with 31 anterior segments is only 

 12 mm. long. The prostomial antennae are closely moniliform, with 

 12 to 15 articles. The peristomial tentacles are nearly smooth and 

 about two-thirds as long as the peristomial ring. The branchiae are 

 present from the sixth setigerous segment ; they are pinnate, the first 

 with 3 filaments which are shorter and weaker than the dorsal cirri, 

 the second have 6 filaments, the third 10 filaments, increasing to 15 

 filaments at the fifteenth parapodium. From the twenty-fifth to the 

 thirtieth segments the branchiae diminish in size, and at the fortieth 

 they do not extend distally much beyond the dorsal cirri. At the 

 eighty-third segment they are still present with 5 pinnate filaments. 

 Posterior simple hooks are trifid (fig. 3, b) . 



