NO. 3574 COPEPOD CRUSTACEANS — LEWIS 171 



Charopinopsis quaternia (Wilson) 



Figure 65 



Charopinus quaternius Wilson, 1935b, p. 343, pi. 4, figs. 42-49. — Causey, 1953a, 



p. 11, fig. 15. 

 BrachieUa coryphaenae Pearse, 1952a, p. 35, figs. 129-135. — ^Pillai, 1962a, p. 85, 



fig. 18.— Yamaguti, 1963, p. 248, pi. 270, fig. 7. 

 Charopinopsis quaternia (Wilson) Yamaguti, 1963, p. 251, pi. 271, fig. 3. 



Distribution and hosts. — 4 host records: 



locality hosts references 



Gulf of Mexico Peristedion gracilis 



Coryphaena hippurus Wilson, 1935b 



Scomheromorus cavalla Causey, 1953a 



Indian Ocean Coryphaena hippurxis Filial, 1962 



Material. — Nine females (USNM 112934) from the gill filaments 

 of Coryphaena hippurus Linnaeus, captured 120 mUes south of Oahu, 

 Hawaii (USFWS, HMS cruise 34). 



Measurements. — (In mm) 9 females: 



Total length, excluding posterior processes 



Length of cephalothorax 



Width of anterior region of cephalothorax 



Width of posterior region of cephalothorax (at level of 



maxillae) 

 Length of "neck" between maxillae and trunk 

 Length of trunk, excluding posterior processes 

 Width of trunk 



Length of lateral-dorsal posterior processes 

 Length of median-ventral posterior processes 

 Length of egg strings (8 strings) 



Description of female. — Cephalothorax (fig. 65a) elongate, ante- 

 rior part bearing small, terminally concave projection from median 

 anterior surface, in addition to cephalic appendages (except maxillae) 

 and maxillipeds. Posterior part of cephalothorax necklike, slightly 

 narrower than anterior part. Trunk elongate, broader than cephalo- 

 thorax, constricted at junction with cephalothorax, without indication 

 of segmentation. Posterior end of trunk with 2 pairs of processes (fig. 

 656), 1 short, dactyliform pair that may be curved on outer posterior 

 surfaces; 1 long, filamentous pair on ventral posterior surface, adjacent 

 to oviducal openings. Median posterior ventral surface of trunk with 

 small, padlike projection appearing to contain droplets of viscous ma- 

 terial, projection not appearing to be associated with reproductive 

 elements. Median posterior surface essentially concave although 

 heavily sclerotized, forming place of attachment for ovoid spermato- 

 phores that project slightly and give biconcave outlme to surface. 



