 However, Gray later wrote that a similar dolphin was described as "Delphinus supercilious" by French surgeons and naturalists René Primevère Lesson and Prosper Garnot from a specimen collected off the coast of Tasmania two years before his own classification.Gray classified "D. supercilious" as a junior synonym of his "D. obscurus" and credited Lesson and Garnot (1826) for their original description.Meanwhile, Charles Darwin also described what turned out to be this species as "Delphinus fitzroyi" from a specimen harpooned off Argentina in 1838.