178 PROCEEDINGS OF THE NATIONAL MUSEUM vol. los 



species of Stephos was found in collections from James Bay by Vfilley 

 (1923). Two new species of Platycopia were described from the Maine 

 coast by M. S. Wilson (1946). Ridgewayia was found in Bermuda by 

 Esterly (1911) and to this is now added the Dr}^ Tortugas records. 

 In addition, Fleminger (1957) has described new species of Stephos 

 and Bradyidius from the Gulf of Mexico. 



The distribution of the species of Ridgewayia emphasizes the loiown 

 faunistic affinity between the Indo-West-Pacific region and the 

 American tropical Atlantic (West Indian) region (Elanan, 1953; 

 Hyman, 1955). Sewell (1948) has listed many species of pelagic 

 copepods common to the two areas and has also (1940, p. 354) pointed 

 out the similarity of the littoral copepod fauna of the Suez Canal 

 with that of the coasts of India and Ceylon. The littoral copepod 

 fauna of the West Indian region is scarcely known, but Willey (1930) 

 has shown the Bermudan harpacticoid fauna to be related to that of 

 the Suez Canal. NichoUs (1944) has pointed out the striking similarity 

 of Suez Canal and Bermudan species of Pseudocyclops (P. magnus 

 Esterly, 1911, and P. latens Gurney, 1927) . The closely allied Tortugas 

 and Bermuda species of Ridgewayia emphasize the relationship of 

 these two areas of the West Indian region, and, through their demon- 

 strated relationship to species of the Suez Canal and the Indian coast, 

 are another example of littoral animals zoogeographically linldng the 

 Indo-West-Pacific and West Indian regions. 



Literature cited 



Ekman, Sven 



1953. Zoogeography of the sea. xiv + 417 pp. 

 Esterly, Calvin O. 



1911. Calanoid Copepoda from the Bermuda Islands. Proc. Amer. Acad. 

 Arts Sci., vol. 47, No. 7, pp. 219-226, 4 pis. 

 Flemingek, Abbaiiam •■ ■; 



1957. New calanoid copepods of theffamilies Aetideidae, Euchaetidae, and 

 Stephidae from the Gulf of Mexico. Fish. Bull. U. S. Fish and 

 Wildlife Service, vol. 57, No. 117, pp. 355-363, pis. 1-3. 



GlESBRECHT, WiLHELM 



1892. Systematik und Faunistik der pelagischen Copepoden des Golfes 

 von Neapel und der angrenzenden Meeresabschnitte. Fauna und 

 Flora des Golfes von Neapel, monogr. No. 19, 831 pp., 54 pis. 

 Gurnet, Robert 



1927. Zoological results of the Cambridge Expedition to the Suez Canal, 

 1924. Report on the Crustacea: Copepoda (littoral and semi- 

 parasitic). Trans. Zool. Soc. London, vol. 22, No. 4, pp. 451-577, 

 figs. 108-168. 



1931. British fresh-water Copepoda. Vol. 1, 238 pp., 344 figs. Ray Society, 

 London. 



1933. British fresh-water Copepoda. Vol. 3, 384 pp., figs. 1196-2061. 

 Ray Society, London. 



