title: [Two new species of the genus Squatina (Chondrichthyes: Squatinidae) from the Gulf of Mexico].
abstract: Two undescribed species of the genus Squatina, caught by bottom-trawl during the OGMEX VIII, IX and PROBEMEX II oceanographic cruises were compared with S. dumeril Lesueur, 1818, the only well known species from the northern Gulf of Mexico. The collections were made off Tamaulipas, Veracruz and Tabasco. The descriptions of the new species refer to morphology, coloration pattern and dorsal fin shape and size. An English description of each species is included. Some specimens erroneously assigned to S. dumeril are deposited in Mexican collections. With these two new species, besides S. californica Ayres, 1859 and S. dumeril, the number of documented species of this genus in Mexico ascends to four, and a total of five are known from the western Atlantic. A key is provided for their identification.
authors.affiliation: Centro Interdisciplinario de Ciencias Marinas, IPN, Colección Ictiológica. Apdo. 592, La Paz, Baja California Sur, México. jlcastroaguirre@hotmail.com
authors.forename: José Luis
authors.initials: JL
authors.lastname: Castro-Aguirre
authors.forename: Héctor
authors.initials: H
authors.lastname: Espinosa Pérez
authors.forename: Leticia
authors.initials: L
authors.lastname: Huidobro Campos
mesh_terms: D000818:Animals; D008800:Mexico; D012754:Sharks / Q000033:anatomy & histology / Q000145:classification*; D013045:Species Specificity