326 PROCEEDINGS OF THE NATIONAL MUSEUM vol.90 



tinguished by having long caudal rami; in each instance, however, 

 they do not attain the length of the abdomen. Corycaeus ameri- 

 cantis differs not only from these species, but from all other species 

 of the subgenus known to me, in having the caudal rami of the female 

 longer than the two abdominal segments combined. 



LITERATURE CITED 

 Dahl, Makia. 



1912. Die Copepoden der Plankton-Expedition, I : Die Corycaeinen. Mit 

 Berucksichtigung aller bekannten Arten. Erbegn. Plankton-Ex- 

 ped. Humboldt-Stiftung, vol. 2, pt. 1, 136 pp., 16 pis. Kiel and 

 Leipzig, 



GURNEY, ROBEKT. 



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

 1924. VIII, Report on the Crustacea : Copepoda and Cladocera of 

 the plankton. Trans. Zool. Soc. London, vol. 22, pp. 139-172, 

 14 figs. 



Wilson, Charles Branch. 



1932. The copepod crustaceons of Chesapeake Bay. Proc. U. S. Nat. Mus., 

 vol. 80, art. 15, 54 pp., 5 pis. 



U. S. SUVERNMENT PRINTINS OFFICE: 1949 



