348 



PROCEEDINGS OF THE NATIONAL MUSEUM 



by the U.S. Atomic Energy Commission and the Eniwetok Marine 

 Biological Laboratory during the time that the Eniwetok Atoll 

 collections were being made. The loan of some specimens of Denti- 

 gryps curtus by the division of marine invertebrates, U.S. National 

 Museum, is also deeply appreciated. Additionally, the assistance 

 given to the author by Eugene Shinn, David Au, John Shoup, Samuel 

 Kaolulo, and Lester Zukeran in the collection of the fish hosts greatly 

 facilitated the study. 



The drawings included in the figures were made in one of two ways: 

 The entire animal was drawn, with the aid of a Bausch and Lomb 

 Tri- simplex microprojector provided by the University of New Hamp- 

 shire Central University Research Fund, from specimens stained in 

 Methyl Blue, placed in 85 percent lactic acid and covered with a 9-mm. 

 cover slip; the appendages and processes were drawn, with the aid of 

 a camera lucid a, either in situ on the wholemount or removed and 

 mounted in Hoyer's mounting medium. Measurements of the cope- 

 pods and their component parts were made with an ocular micrometer. 



In the figures the cf and 9 signs are used separately under each 

 drawing to indicate a difference between the appendage of the female 

 and that of the male, and together (cT?) to indicate similarity; the 

 sex from which the drawing was made is indicated by a line under the 

 appropriate symbol. 



The terminology used is basically the same as that in Lewis (1964). 

 To facilitate the use of the thoracic leg tables, a hypothetical thoracic 

 leg is shown in figure 1 , and the component parts of the armament of 

 the legs are shown in tabular form in table 1. 



Table 1. — Armature of hypothetical thoracic leg shown in figure 1. 



Subclass Copepoda: Order Caligoida 



Genus Dentigryps Wilson 



Dentigryps Wilson, 1913, pp. 221-222; Lewis, 1964, p. 203. 



Diagnosis. — Adult (emended from Wilson, 1913): Total length of 

 body, excluding setae, ranging from slightly more than 2 mm. to over 

 7 mm., males smaller than females. 



