12 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



Leg 5 (fig. 40) with inner lobe in form of large claw. Egg strings as in 

 other Pandarus species. Color dark brown to black in pigmented 

 areas (see fig. 34). Eye spots joined at midline and not separated 

 as in P. satyrus. 



Male. — Body form as in figure 41. Length 9.4 mm (not including 

 setae on caudal rami) and width (measured at widest point) 4.4 mm 

 based on an average of 10 specimens. General configuration similar 

 to other Pandarus species. Genital segment (fig. 42) 2.0 mm by 

 1.8 mm with posterior corners not produced as in P. satyrus and P. 

 cranchii. Spermatophore visible through genital segment. Oral area 

 as in P. satyrus. Legs 1.4 biramose with spine and setal formula as 

 in P. satyrus. Leg 1 (fig. 43) showing minor differences in adhesion 

 areas and length of setae when compared with P. satyrus. Leg 2 

 (fig. 44) with papillose area on outer corner of coxopodite rather than 

 patch of fine setules as in P. satyrus. Leg 5 (fig. 45) with 3 plumose 

 setae and 1 small spine and borne laterally on genital segment as in 

 P. satyrus. Leg 6 consisting of 1 short spine and a single seta located 

 at junction of genital segment and abdomen. 



Color in life whitish yellow and generally devoid of darker pigment. 



Discussion. — Pandarus smithii is a widely distributed copepod 

 found on a number of hosts and often occurring with Pandarus cranchii 

 on carcharinid sharks. P. smithii can be easily distinguished from 

 the other species of the cranchii group on the basis of the caudal 

 ramus and eye spots in pigmented females. Males can be separated 

 from cranchii and satyrus on the basis of the shape of the genital 

 segment and nature of leg 5. 



In 1940 Carvallio described a new species, Pandarus marcusi. I 

 have examined material identified by Carvalho as this new species 

 from Brazil and have concluded that it is in fact a synonym of P. 

 smithii. The sole basis for separating marcusi from smithii was the 

 shape of the dorsal plate of the abdomen. P. marcusi had a plate 

 with a deep median sinus. This irregularity in the shape of plates is 

 not uncommon in the genus. I have observed these irregularities in 

 collections of Pandarus that show an epiphyte (algal or fungal) 

 growing on the surface of the copepod. The "roots" of the epiphyte 

 seem to have a corrosive action on the integument and often leave 

 the area malformed. 



Pandarus floridanus, new species 



FiGUEES 46-66 



Specimens studied. — Thirty-two females and 1 male collected 



from Carcharodon carcharias (Linnaeus) caught at Dennis, Mass. 



Holotype female, allotype male, and 10 paratype females in alcohol 



deposited in the U.S. National Museum, 10 paratype females in 



