Range extensions of the lophiid anglerfish <i>Lophiodes spilurus</i> and the stingray <i>Urotrygon nana</i>, along the Pacific coast of America

Resumen

Since 1979, we have been sampling the demersal fishes of the continental platfonn of southem Sinaloa, extending our research to the entire Gulf of California from May 1982 onwards. The geographlcaJ distribution of many of these demersal fishes, most of them of "Panamic" origin (sensu Walker 1960) is not known in detail. The present paper is intend