THE POLYCHAETOUS ANNELIDS COLLECTED ON 



THE PRESIDENTIAL CRUISE 



OF 1938 



By OLGA HARTMAN 

 The Allan Hancock Foundation, University of Southern California 



These collections were made from July 18 to August 6, 1938. 

 Localities include western Mexico, Clipperton Island. Galapagos Is- 

 lands, Cocos Island, all in the eastern Pacific, and Old Providence 

 Island, in the Caribbean Sea. Depths range from intertidal to 15 

 fathoms. 



Though small, the collection is represented by 17 families, with 31 

 species, of which 2, Neanthes roosevelti and Polydora tricuspa, are 

 new to science, 1, Cirratulus niger, is newly named, and 2 others, 

 Scalisetosus sp., and Armandia sp., may represent undescribed species. 

 Several others have had their range extended considerably into tropi- 

 cal waters. 



Following is a list of stations, with species encountered : 



Station No. 3-38. July 18. Magdalena Bay, inside northern point of 

 entrance to bay, between Belcher Point and anchorage, dredged 

 in 10-15 fathoms ; sandy, weedy bottom. 



No. of specimens 



Halosydna fuscomarmorata (Grube) 6 



Paleanotus chrysolepis Schmarda 1 



Uncinercis agassisi (Ehlers) about 50 



Nereis callaona Grube 2 



Eunice aedificatrix Monro 1 



Polyophthalmus pictus (Dujardin) about 100 



Armandia, sp 1 



Metachone mollis Bush 5 



Station No. 4-38. July 18. Magdalena Bay, Lower California; fila- 

 mentous green algae from deeper end of preceding dredge haul. 



No. of specimens 

 Uncinereis agassizi (Ehlers) 10 



Smithsonian Miscellaneous Collections, Vol. 98, No. 13 



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