FISHERY BULLETIN: VOL. 75, NO. 2 



USNM, NW of Charlotte Harbor, 274 m, 22 August 1970, 

 Oregon II stn 11181. 



BAHAMAS— 2 9, RMNH, W of Gun Cay I, 458-531 m, 



30 January 1964, Gerda stn 242. 1 9 , RMNH, N of Double 

 Headed Shot Cays, 443 m, 27 January 1965, Gerda stn 483. 



LESSER ANTILLES— 3 d 1 9, USNM, E of The Grena- 

 dines, 357-658 m, 4 July 1969, Pillsbury stn 861. 



WESTERN CARIBBEAN— 1 ?, USNM, W of Old Provi- 

 dence I, 549 m, 12 September 1957, Oregon stn 1918. 



PANAMA— 1 9 , USNM, Golfo de los Mosquitos, 274-293 m, 



31 May 1962, Oregon stn 3597. 



VENEZUELA— 1 $ , USNM, E of Peninsula de Paraguana, 

 366 m, 4 October 1963, Oregon stn 4421. 1 6, USNM, off San 

 Juan de los Cayos, 384 m, 9 October 1963, Oregon stn 4440. 



TRINIDAD - TOBAGO— 2 <?, USNM, NW of Tobago, 

 146 m, 2 July 1969, Pillsbury stn 848. 



BRAZIL— Alagoas: 1 6, BMNH, off Barra Grande, 

 10 September 1873, Challenger stn 122-122C. 



Description-Carapace (Figure 50) finely pubes- 

 cent; setae dense and long on base of rostrum, 

 gastric, and epigastric regions; small setae on 

 cardiac region, and minute ones sparsely set on 

 hepatic and branchial regions; abdomen polished, 

 and almost entirely naked except for setae on 

 posterodorsal keel; pubescence of telson as in 

 Figure 46B. Rostrum short, its length 0.25-0.30 

 that of carapace, reaching little beyond midlength 

 of first antennular article, almost horizontal, 

 with dorsal margin straight and ventral margin 

 strongly convex but with subapical concavity 

 giving rise to saber shaped tip; latter 0.3-0.4 

 length of rostrum. Rostral plus epigastric teeth 6, 

 apex of third rostral tooth or fourth tooth at level 

 of orbital margin. Adrostral carina extending 

 from orbital margin to ultimate tooth; postrostral 

 carina ending immediately behind cervical sul- 

 cus. Orbital margin produced anteriorly in ven- 

 trally inclined short shelf. Postorbital spine, 

 longest of four lateral spines on carapace, situated 



dorsal to base of small antennal spine; branchio- 

 stegal and hepatic spines sharp. Cervical sulcus 

 deep, ending dorsally just posterior to midlength 

 of carapace at base of postrostral carina; cervical 

 carina sharp; hepatic sulcus almost horizontal 

 posteriorly, inclined anteroventrally from de- 

 pressed area below hepatic spine to pit below 

 branchiostegal spine. 



Eye as illustrated (Figure 445). 



Antennular peduncle length equivalent to 

 about 0.65 that of carapace; prosartema long, con- 

 spicuously overreaching distomesial margin of 

 first article; stylocerite length about 0.65 of dis- 

 tance between lateral base of first article and base 

 of distolateral spine; latter slender and long; fia- 

 gella long, length of dorsal fiagellum 1.9 cl in 

 shrimp 23 mm cl, proximal portion of fiagellum 

 slightly broader than subfiliform distal portion; 

 ventral fiagellum slightly shorter and broader 

 than dorsal, gently tapering distally, and bearing 

 long, marginal plumose setae. Scaphocerite over- 

 reaching antennular peduncle by as much as 0.2 

 of its own length, gently tapering from base to 

 narrow distal portion; lateral rib ending in long, 

 slender spine, barely or conspicuously over- 

 reaching distal margin of lamella. Antennal fia- 

 gellum long, at least 3 times total length of 

 shrimp. Mandibular palp with distal article 

 slightly shorter than basal and almost reaching 

 or barely overreaching distal margin of carpo- 

 cerite. Third maxilliped surpassing antennular 

 peduncle by length of dactyl and 0.2-0.5 length 

 of propodus. 



First pereopod stout, reaching between mid- 

 length and distal end of carpocerite. Second pereo- 

 pod moderately stout, extending almost to distal 

 end of carpocerite or overreaching it by not more 



FIGURE 50. — Hadropenaeus modestus, 19 mm cl, west of Isla de Providencia, western Caribbean. Cephalothorax, lateral view. 



324 



