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POLYCHAETOUS ANNELIDS 

 Part I. Aphroditidae to Pisionidae 



(Plates 1-28) 

 By Olga Hartman 



The polychaetous annelids included in this report were collected 

 largely by the Allan Hancock Pacific Expeditions to Lower California, 

 western Mexico, western Central America, the Pacific side of Panama, 

 Colombia, Ecuador, Peru, Cocos and Galapagos islands, and southern 

 California north to San Francisco. A few specimens, indicated with ac- 

 cession numbers, enumerated at the end of the station list, are in the 

 collections of The University of Southern California, and were col- 

 lected from southern California. 



A station list follows, including only those stations of the Allan 

 Hancock Pacific Expeditions which were represented in the families 

 investigated in this report. Under each are listed the species collected, 

 for the families herein considered. New species or new names are pre- 

 ceded by an asterisk. 



St. 20-33. Jan. 1, 1933. La Libertad, Ecuador. With electric light. 



Arctono'e vittata (Grube) 

 St. 22-33. Jan. 22, 1933. La Plata Island, Ecuador. 



Halosydna parva Kinberg 

 St. 28-33. Jan. 25, 1933. Gardner Bay, Hood Island, Galapagos. 



Diving in 2 fms. 



Sthenelais fusca Johnson 

 St. 66-33. Feb. 9, 1933. Albemarle Island, Tagus Cove, Galapagos. 



In 10-20 fms., dredged. 

 *Eusigalion hancocki, new species 

 St. 74-33. Feb. 14, 1933. Albemarle Island, Cartago Bay, Galapagos. 



In 3-6 fms., dredged. 

 *Eusigalion hancocki, new species 

 St. 76-33. Feb. 14, 1933. Same locality. North sandy shore, of? dead 



tree. 



Thormora johnstoni (Kinberg) 

 St. 114-33. Mar. 10, 1933. Bahia Honda, Panama. In coral, from 2 



fms., near East Point. 



Iphione ovata Kinberg 



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