RESULTS OF THE RESEARCH CRUISES OF FRV HERWIG,WALTHER TO SOUTH-AMERICA .73. 4TH RECORD OF BATHYRAJA-PAPILIONIFERA STEHMANN, 1985 FROM THE CONTINENTAL-SLOPE OFF NORTHERN ARGENTINA (PISCES, RAJIFORMES, RAJIDAE)

An immature male of B. papilionifera had already been trawled during t he third fishery expedition to South America in 1971 seven years prior to the type series obtained at two stations of the fourth expedition in 1978. The additional record was taken somewhat north of the type lo cality on the continental slope off North Argentina. This fourth and s econd largest specimen of the rare southwestern Atlantic deep-water sk ate is described here in comparison with the likewise immature three t ype specimens. The catch composition of the three trawls stations was similar, despite minor differences between the 1971 and 1978 stations in depth and size of bottom trawls fished. Based on the example of the se three slope stations within the 660 to 1040 m depth range, the dist inctly lower fish species diversity in the southwestern Atlantic off A rgentina is briefly commented on, as compared with that at similar slo pe depth in other ocean areas.