The Amphibians and Reptiles of Sinaloa, Mexico - Smithsonian ...

AMPHIBIANS AND REPTILES OF SINALOA, MEXICO 107
Distribution in Sinaloa,—Inhabits canyons and arroyos at intermediate
elevations on the Pacific versant of the Sierra Madre Occidental.
See Fig. 37.
Specimens examined.—7.5 mi. E Concordia (CSCLB 2000); 1.5 km. W
Coyotitan (" KU 43617); Santa Lucia, 1100 m. (• KU 75656).
Literature record.—Presidio de Mazatlan (Gunther, 1885-1902:6).
Additional record.—"Vicinity of Los Mochis" (UMMZ 120422).
Terrapene nelsoni klauberi Bogert
Terrapene klauberi Bobert, Amer. Mus. Novitates, 1226:2, 1943 (type locality,
Rancho Guirocoba, about 18 miles southeast of Alamos, Sonora).
Terrapene nelsoni klauberi: Milstead and Tinkle, Copeia, No. 1:184, March
20, 1967.
Remarks.—Inquiry among the inhabitants at Terreros led to the
discovery of this turtle, heretofore unknown from the state. A
single plastron and carapace was found on a steep hillside near
Terreros. William W. Milstead kindly examined this specimen and
provided the identification. The specimen is a male with the following
characteristics: total length, 135; posterior lobe of plastron
length, 81; interabdominal suture, 28; interfemoral, 14; interanal,
39; posterior lobe ratios—interabdominal, 0.34; interfemoral, 0.17;
interanal, 0.48 (all measurements by Milstead).
The specimen was found on an isolated rocky peak that reaches a
height of about 600 meters; the hillside is covered by a low-canopy
forest. Numerous burrows were found on the southeastern slope of
the peak, some of which were attributed to Terrapene. Additional
collecting in the foothills along the eastern border of the state and
on other isolated peaks on the coastal plain should turn up additional
specimens.
Distribution in Sinaloa.—Known only from an isolated peak in
the central lowlands. See Fig. 37.
Specimen examined.—About 4 mi. W Terreros (JMS osteo. coll. 911).
Family Testudinidae
Gopherus agassizii (Cooper)
Xerobates agassizii Cooper, Proe. California Acad, Sci., 2:120, 1863 (type
locality, Mountains of California near Fort Mojave, Kern County, California).
Gopherus agassizii: Stejneger, N. Amer. Fauna, 7:161,1893.
Remarks.—Bogert and Oliver (1945:398-9), on the basis of four
specimens of Gopherus agassizii from Alamos, Sonora, reported that
the population inhabiting the Rio Fuerte drainage has become partly