Additional specimens of Eridiphas slevini from Baja California del Sur are reported and discussed and the first specimen from Baja California del Norte is reported. Specimens from San Marcos Island are distinguished from mainland stock with the description of the new subspecies E. s. marcosensis.
Ottley, John R. and Tanner, Wilmer W.
"New range and a new subspecies for the snake Eridiphas slevini,"
Great Basin Naturalist: Vol. 38
, Article 4.
Available at: http://scholarsarchive.byu.edu/gbn/vol38/iss4/4