1'KKKX 1 •WKKAXTK AMERICAN SOI.ENt H'EKII) SHRIMPS 



FIGURE 3\.—Pleoticus robustus, 2 56 mm cl, off Dog Island, Lesser Antilles. A, Mandible. B, First maxilla. C, Second maxilla, c, 

 Endite of basipodite. c 1 , Enlargement of c, ventral view, c 2 , Dorsal view. D, First maxilliped. g. Rudimentary arthrobranchiae. g 1 , 

 Enlargement of g. E, Second maxilliped and proximal portion of third. F, Somites VIII and IX with proximal portions of second and 

 third maxillipeds, showing attachments of gills. 



raised in strong, densely setose prominence on 

 ventral surface. Coxa of fifth pereopod in male 

 bearing blunt spine on anteromesial margin; in 

 female, coxa produced into setose, short plate. 

 Abdomen with middorsal carina from third 



through sixth somites, carina rounded on third, 

 sharp and high from fourth posteriorly; sixth 

 somite with small spine at posterior end of carina 

 and paired, posteroventral spines. Telson with 

 median sulcus rather shallow, short, occupying 



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