CALANOID COPEPODS FROM GULF OF MEXICO 



357 



SCALE 



oiiyiM 



TTGS 1-4 

 PIMM, 

 FIGS 7,8,11 



I MM , 



PIGS 5,9,10,12,13 

 1 MM 



Plate 1. — Brail yiilius arnoldi, new species. 1, female, lateral view ; 2, female, dorsal view : 3. male, lateral view ; 

 4. male, dorsal view : .">. male rostrum ; 6. mandibular snathal lobe ; ( a ) stage V male : 1 1) ) adult female : 7. female second 

 let;; H. female first leg: !). female fourth leg. endoixxlite : 10, female tliird leg. endopodite; 11, female genital segment, 

 ventral view ; \2. male fifth legs ; 1.3. female .second maxilla. All figures drawn with aid of camera lucida : figures 3, 4 

 of holotype, remaining figure.s of paratypes. 



