PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM 



SMITHSONIAN INSTITUTION 

 U. S. NATIONAL MUSEUM 



Vol. 108 Washington : 1958 No, 3398 



A REVIEW OF THE COPEPOD GENUS RIDGEWAYIA (GALA- 

 NOIDA) WITH DESCRIPTIONS OF NEW SPECIES FROM 

 THE DRY TORTUGAS, FLORIDA 



By Mildred Stratton Wilson ^ 



The calanoid copepods discussed herein represent a small number of 

 incompletely known, closely allied species for which three generic 

 names have been proposed. To this list are added two new species 

 from collections made among the keys of the Dry Tortugas, Florida, 

 by Mr. Clarence Shoemaker of the United States National Museum 

 in the course of an amphipod survey of that region (Shoemaker, 1933, 

 1956). The debris washed from rocks and corraline algae taken at 

 very shallow depths of a few inches to a few feet has yielded not 

 only amphipods but other Crustacea among which were many small 

 copepods. These included mostly Harpacticoida and Cyclopoida 

 characteristic of such a habitat, but some Calanoida were also present. 

 Among these were adults of the two new species and a few subadult 

 males of an unknown species that are herein assigned to the genus 

 Ridgewayia. 



This rather unusual genus has been known since 1903 when Thomp- 

 son and Scott described the female of R. typica from Ceylon. Since 

 then, closely allied species have been described as the types of new 

 genera without comment on thek obvious relationship to Ridgewayia. 



' Collaborator, SmithsonlanJInstitution. 



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