COPEPOD CRUSTACEANS — ^LEWIS 



107 



d) 2-segmented, situated just lateral and posterior to postoral process. 

 First segment slightly shorter than second, excluding terminal proc- 

 esses, although wider; second segment elongate, tapered proximally 

 and distally, bearing membrane from middle of inner margin and 2 

 saber-shaped terminal processes, each with membrane along margins. 



Female maxilliped (fig. 38e) 2-segmented, situated posterior and 

 medial to maxilla base. First segment approximately 2}^ times the 

 length of second, strongly developed, width slightly less than half the 

 length. Second segment distinct from clawlike terminal process, 

 bearing single, setule-like accessory process from posterior-inner distal 

 surface. Male maxilliped simUar to that of female although first seg- 

 ment with small, ledge-shaped projection on proximal inner surface. 

 Female and male sternal furca (fig. 38/) situated between posterior 

 ends of maxilliped bases. Furcal tines diverging widely, heavily 

 sclerotized. Pair of lappet-shaped projections present, lateral to base 

 of furca. 



For nature of legs and armament, see figure 39 and table 14. 



Table 14. — Armature of thoracic legs I-IV of the female and male of 

 Caligus coryphaenae Steenstrup and Liitken, 1861 



•Element in middle of segment. 



fFemale has denticulated membrane, not separate denticulations as in male. 



Discussion. — Steenstrup and Liitken (1861, p. 362) state that 

 "Our C. coryphaenae also seems closely related to C. scutatus M. Edw. 

 (hist. d. Crust, t. Ill P. 453 no. 7), but as this is from the Indian 

 Ocean it does not seem probable to us that this is the same species." 

 The present distribution and hosts of Caligus coryphaenae suggest 

 that Steenstrup and Liitken erred in using the different location as a 



