192 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 19 



were identified by Mr. Fred Ziesenhenne ; the mollusks were studied by 

 Mr. Gilbert F. Jones and the late Dr. Norman Mattox. Crustaceans 

 were identified or described by various specialists; Dr. J. Laurens Bar- 

 nard studied the amphipods, Mr. Robert Given the cumaceans, Dr. Rob- 

 ert Menzies some of the isopods, and Mr. William Banta the bryozoans 

 from the Farnsworth Bank. Professor K. O. Emery provided copies of 

 photographs from submarine areas of? Santa Catalina Island. The 

 National Science Foundation, through grant no. B5-1780, supported 

 Mrs. Hannelore Paxton, who assisted in the organization and prepara- 

 tion of the manuscript, and Mr. Carl Petterson, illustrator, who prepared 

 the illustrations for plates 1 to 6, and arranged the photographs for plates 

 8 to 14. Mr. Anker Peterson prepared the figures on plate 7. Mrs. 

 Dorothy Halmos, Editor of the Hancock Publications, gave invaluable 

 aid in the final preparation of the manuscript. To all of these people and 

 institutions, I am most deeply indebted. 



DESCRIPTIONS OF NEW AND LITTLE KNOWN 



POLYCHAETOUS ANNELIDS FROM THE 



SAN PEDRO REGION 



The benthic samples taken from the San Pedro region were unusually 

 productive of polychaetous annelids, and resulted in the recovery of species 

 heretofore unknown. Some are here described. 



Family POLYNOIDAE 

 Genus Gattyana Mcintosh, 1900 



Gattyana brunnea, new species 



(Plate 1, Figs. 1-3) 



Collection: Sta. 2154 (TYPE). 



A small, linear, depressed species, it measures 15 mm long by 2 mm 

 wide with parapodia, and has 30 segments. Elytra number 15 pairs and 

 completely cover the dorsum. 1 he prostomium has two pairs of eyes ; the 

 anterior ones are in front of midlength and at sides, and the posterior pair 

 nearer together, and at the posterior margin of the prostomium. Elytra 

 are subcircular ( Y\g. 1 ) in anteriormost segments, where they are large, 

 dusky brown and have a chalky white spot over the elytral scar; their 

 lateral margins are smooth in the first pairs, then have a sparse marginal 

 fringe at outer lateral edges, with the fringe in a single row ; they are 

 never fimbriated as in other species of the genus. The upper surface of 

 elytra appears smooth but is sparsely covered with low, inconspicuous 

 surface nodules. 



