358 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



For measurements of specimens, see tables 7 and 8 under Discussion 

 of the Species. 



Description. — Adult: Female approximately 3.0-3.5 mm. in 

 length, male approximately 2.0-2.3 mm., excluding setae. Anterior 

 lateral cephalo thoracic margin not forming sharply-angled, posteriorly- 

 directed protrusion. Fourth pedigerous segment of female not cov- 

 ered dorsally by projecting median cephalothoracic region, that of 

 male partially covered. Dorsal cuticle of fourth pedigerous segment 

 indistinctly platelike. Division between fourth pedigerous and 

 genital segments indistinct and incomplete in female, distinct and 

 complete in male. Width of female genital segment slightly less than 

 twice the length. Female fifth legs well developed, heavily sclerotized, 

 extending posteriorly well past caudal rami but not ramal setae, distal 

 end pointed, bearing plumose setule. Male fifth and sixth legs short 

 but distinct, acuminate, projecting posteriorly past posterior end of 

 genital segment. Fifth leg with one plumose setule distally, sixth 

 with two. 



Antennule with small, knob-shaped projection of distal posterior 

 lateral surface. Male antenna with terminal process consisting of 

 single, clawUke structure bearing large, bifurcate process from median 

 posterior surface. Male with indistinct indications of pair of adhesion 

 pads posterior to mouth cone base. Third thoracic leg with 3-seg- 

 mented exopodite. 



Dentigryps curtus Wilson 



Figures 6; 7; 8; 12c,g,k; 13c 



Dentigryps curtus Wilson, 1913, p. 222, pi. 32, figs. 127-135; Wilson, 1935, p. 331; 

 Yeatman, 1957, p. 346, figs. 1-16: Lewis, 1964, p. 210, figs. nd,l. 



Localities. — Bermuda, Dry Tortugas, Fla. 



Hosts. — Mycteroperca venenosa apua (Bloch), Mycteroperca tigris 

 (Cuvier and Valenciennes), Mycteroperca venenosa (Linnaeus). 



Material. — One ovigerous and three nonovigerous adult females 

 loaned to the author by the U.S. National Museum (USNM 69789), 

 taken by O. L. Williams from the skin of a specimen of Mycteroperca 

 venenosa (Linnaeus) captured at Dry Tortugas, Florida. Three 

 ovigerous and three nonovigerous adult females loaned to the author 

 by the U.S. National Museum (USNM 64040), taken by C. B. Wilson 

 from the head of a specimen of Mycteropreca venenosa apua (Bloch) 

 captured at Dry Tortugas, Florida. (All U.S. National Museum 

 specimens identified by C B. Wilson.) Two ovigerous and eleven 

 nonovigerous adult females in addition to one adult male (without 

 caudal rami) collected by Eugene Shinn from the external surface of an 

 unidentified grouper speared off Tennessee Reef, Florida (specimens 



