32 PROCEEDINGS OF THE NATIONAL MUSEUM 



and first 4 thoracic segments, frontal region well defined. Free fourth 

 pedigerous segment with alae (larger m female than in male) . Female 

 genital segment large, siiborbicular, with pair of posterior lobes; male 

 genital segment longer than wide, of variable shape but lateral mar- 

 gins generally parallel, without posterior lobes. Abdomen 2- or 3- 

 segmented, female first segment elongate, with pair of large, lamellate 

 processes extending posteriorly past caudal rami, remaining segment 

 or segments without lamellate processes; male first segment shorter 

 than in female, lamellate processes thicker and smaller, extending 

 posteriorly only to region of second abdominal segment, remaining 

 segment or segments as in female. Caudal rami similar to those of 

 other euryphorids. Antennide 2-segmented; antenna 3-segmented, 

 prehensile, male with enlarged secondary spines. Mandible rod 

 shaped, denticulated distally; maxillule nodular, tipped by 3 setae; 

 maxillae 2-segmented. Postantennal process consistuig of 2 nodides 

 with hairlike processes; postoral process spinelike. Maxilliped 2- 

 segmented, prehensile, with 2 subtriangular protuberances on first 

 segment. Sternal furca with divergent tines in female, almost paral- 

 lel tines in male; furca-like processes present posterior to interpodal 

 plate of first and second thoracic legs. Thoracic legs I-IV biramous, 

 ramal segment count 2-2, 3-3, 3-3, 3-2, fifth legs setiform. 



Euryphorus nordmanni Milne-Edwards 



Figures 12-15 



Euryphorus nordmanni Milne-Edwards, 1840, p. 462, pi. 39, fig. 1. — Kner, 1859, 

 p. 268, figs. 1-3.— Bassett-Smith, 1899, p. 461.— Kirtisinghe, 1937, p. 445, figs 

 74-87.— Yamaguti, 1963, p. 98. 



Euryphorus nympha Steenstrup and Liitken, 1861, p. 365, pi. 6, fig. 12. — Heller, 

 1868, p. 198.— Bassett-Smith, 1899, p. 461.— Wilson, 1913, p. 225.— Shiino, 

 1954b, p. 284, figs. 5-6; 1959a, p. 350; 1959b, p. 20, fig. 9.— Ho, 1963, p. 83, 

 figs. 1-3.— Yamaguti, 1963, p. 99.— Kirtisinghe, 1964, p. 88, fig. 104. 



Euryphorus coryphaenae Kr0yer, 1863, p. 161, pi. 10, fig. 4a-h. — Wilson, 1913, p. 

 225.— Yamaguti, 1936b, p. 1, pi. 1, figs. 1-17.— Bonnet, 1948, p. 7.— Causey, 

 1953a, pp. 7, 9; 1953b, p. 11; 1955, p. 6. 



Remarks. — See discussion section, following description, for dis- 

 cussion of synonymy. 



Hosts and distribution.- — 10 host records: 



locality host reference 



"Des mers d'Asie" Unknown Milne-Edwards, 1840 



Western Pacific Coryphacna hippurus Yamaguti, 1936b 



Neothynnus macropterus Shiino, 1954b 



Hawaii Coryphaena hippurus Bonnet, 1948 



Indian Ocean "Seefischen" Kner, 1859 



Coryphaena hippurus 



C. h. equisetis Kirtisinghe, 1937 



