60 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



Genital segment not conspicuously narrowed anteriorly, caudal rami with 



small reduced setae tigris 



3. Fourth thoracic segment with alate plates orientalis 



Fourth thoracic segment without plates vespa 



Nesippus orientalis Heller, 1868 



Figures 295-304 



Nesippus orientalis Heller, 1868, p. 194. — Bassett-Smith, 1899, p. 459. — Brian, 

 1906, p. 49; 1924, p. 33.— Wilson, 1907, p. 457.— Capart, 1953, p. 658; 1959, 

 p. 96. — Rose and Vaissiere, 1953, p. 86. — Barnard, 1955, p. 265. — Nunes- 

 Ruivo, 1956, p. 22.— Yamaguti, 1963, p. 123. 



Nogagus angustatus Beneden, 1892b, p. 245. 



Nesippus alatus Wilson, 1905, p. 130; 1907, p. 426; 1932, p. 438.— Bere, 1936, 

 p. 595.— Heegaard, 1943b, p. 27.— Pearse, 1952b, p. 213.— Capart, 1953, 

 p. 659.^Rose and Vaissiere, 1953, p. 86. — Barnard, 1955, p. 265. — Yamaguti, 

 1963, p. 123. 



Nesippus ornatus Thomson, 1949, p. 17. — Yamaguti, 1963, p. 124. 



Nesippus incisus Heegaard, 1962, p. 179. 



Nesippus australis Heegaard, 1962, p. 178. 



Specimens studied. — Five collections from Sarasota, Fla., from 

 the following hosts: Ginglymostomum cirratum, Galeocerdo cuvier, 

 Carcharinus leucas, and Carcharinus maculipinnis. A single collec- 

 tion from Sphryna zygaenae from Durham, South Africa. From Nosy 

 Be, Madagascar, the following: 8 collections from Carcharinus maculi- 

 pinnis, 4 collections from Sphyrna lewini, 4 collections from Car- 

 charinus leucas, 1 collection from Galeocerdo cuvier, and 1 collection 

 from Scoliodon palasorrah. 



Female." — Body form as in figure 295. Total length 5.6 mm (based 

 on an average of 5 specimens). Greatest width 3.1 mm (measm'ed 

 at widest point of cephalon). Cephalon rounded about as long as 

 wide. Thoracic segments 2-4 free with dorsal plates on segment 4. 

 Plates extending posteriorly slightly over anterior portion of genital 

 segment. Genital segment 2.1 mm long and 1.5 mm wide. Genital 

 segment of equal width throughout with posterior border trilobed. 

 Abdomen (fig. 296) 1 -segmented. Caudal rami (see fig. 296) with 6 

 terminal setae, inner 4 pliunose. 



Oral area with adhesion pads associated with first and second 

 antennae and maxilliped. The pad of first antenna with posterior 

 margin produced to form a hooklike process (fig. 297). First antenna 

 2-segmented (see fig. 297). Second antenna clawlike; of usual 

 pandarid form. Mandible with 11 teeth at tip and of usual type. 

 First maxilla (fig. 298) with a broad process on outer distal corner. 

 Second maxilla (fig. 299) with tip produced to form a clear bulblike 

 tip. A short plumose spine and a small patch of hairs near base of 

 claw. Maxilliped (fig. 300) with a short blunt claw. 



