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PROCEEDINGS OF THE NATIONAL, IMUSEUM 



VOL. 86 



Figure 37. — Species of Lepidasthexia, EiNofi, and AkctonoB 

 a-c, Lepidasthenia lucida (Treadwell) : a. Thirty-fifth parapodium in anterior view, setae 

 diagrammatically represented, dorsal cirrus lost, X 28 ; 6, tip of inferior nouropo- 

 dial sola from thirty-fiftti parapodium, X 204 ; c, tip of superior neuropodial seta 

 from thirty-fifth parapodium, X -04. 

 d, Eunoe eura Chamherlin : Fourteenth parapodium in anterior view, X 28. 

 e, t, Arctonoe tuberculata (Treadwell) : e. Tip of neuropodial seta from tenth parapodium, 

 X 294 ; f, tenth parapodium in anterior view, dorsal cirrus lost, x 45. 



LEPIDASTHENIA ALBA (Trtadwell), new combination 



Pohjnoc alba Treadwell, 190G, p. 1149 ( U.S.N. M. no. 5201; Honolulu). 



The type compares favorably with the description given for L. 

 longicirrata Berkeley (1923, p. 214) except that the latter has a row of 

 papillae on the feet between the bases of the ventral cirrus and the 

 body wall. L. longicirrata Treadwell (1928, p. 460) from Avest of 

 Peru is probably a Halosydna Kinberg. The type is deposited with 

 the New York Zoological Society. 



The tj'i^e of L. aJha differs, in part, from L. lucida (see above) in 

 having shorter, blunter parapodia; also, presetal and postsetal lobes 

 are oblique in L. aJba^ triangular in L. lucida. 



LEPIDASTHENIA INTERRUPTA (Marenzeller) 



Halosydna interrupta Mabenzbxler, 1902, p. 570 (Japan). 

 Polynoe semienna Moork, 1910, p. 331 (U.S.N.M. no. 15738; Japan). 

 Lepidasthenia ocellata Ti{E.\dwkll, 193G, p. 264 (U.S.N.M. no. 20113; China). 



P. semierma Moore has long been considered a synonym of L. inter- 

 rupta (see Moore, 1910, p. 331). 



The type and description of L. ocellata agree favorably with the 

 description of L. interrupta, which has been Avidely reported from 

 the northwest Pacific. 



