Six electric rays, Narcine leoparda, were caught off the coast of Manta, Ecuador between August 2013 and January 2014. These specimens represent the first record in Ecuadorian waters and the southernmost report in the eastern Pacific for the distribution of Narcine leoparda.

A total of 101 denticled roundray Urotrygon cimar were caught in a large area of the Gulf of Tehuantepec. Sizes ranged from 102 to 282 mm total length. Rays were caught at depths between 17 and 62 m. These records confirm the presence of the denticled roundray off the southern coast of the Mexican Pacific.

The first case of abnormal cephalic horns in the California bat ray, Myliobatis californica was found in one male juvenile specimen caught in a gillnet by artisanal elasmobranch fishermen on the west coast of Baja California Sur, Mexico. The specimen had three cephalic horns, two in the cephalic lobes zone and one in the rostral middle zone which could be indicative of a morphogenetic plasticity in these taxa that may have facilitated the evolution of rhinopterid and mobulid species from a common myliobatid ancestor with a similar role of feeding in Mobulidae and Rhinopteridae subfamilies.

The presence of the Gorgona guitarfish, Rhinobatos prahli, in new zones of the Colombian Pacific coast is registered. The current unique Colombian record of the species corresponds to its description from Gorgona Island in 1995. This paper gives new information on the species on the tropical eastern Pacific coast; and contributes to the knowledge of the habitat used by this species in these zones.

The present study provides a check list of elasmobranchs from the Paraná State coast, southern Brazil. Information from fish collections, literature data, field surveys and personal communications were included. Results indicated that 83 species from seven orders and 28 families were recorded. According to the results 51 species belonging to six orders and 17 families of sharks; and 32 species belonging to one order and eleven families of rays occur in this region. The most species-rich families were Carcharhinidae (14 species) and Arhynchobatidae (eight species).