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

172 UNIVERSITY OF KANSAS PUBLS., MTJS. NAT. HIST.
scales in the anterior three body blotches; and faint posterior coloration
(except LACM 6867). Head pattern "A" (Zweifel, 1959d:5,
fig. 2) occurred 17 times, "B" twice and "C" twice. Fourteen females
have 38-63 (48.2) body blotches; 14-24 (18.9) middorsal scales in
the anterior three body blotches; fainter posterior coloration (except
LACM 6881); head pattern "A." One male has 114 subcaudal
scales, slightly fewer than the range of 117-130 that Zweifel
(1959d:7) reported for northern males. All other characteristics
are within the ranges observed by Zweifel (1959d).
More than 30 specimens of this supposedly arboreal snake were
collected on the road at night. Individuals were especially abundant
during or following rains. A specimen was collected in daytime
beneath palm leaves on the ground near Teacapan.
Distribution in Sinaloa.—Throughout the lowlands south of
Guamuchil and at higher elevations along the foothills into southern
Sonora. See Fig. 68.
Specimens examined.—16 km. NNE Choix, 520 m. (*KU 68752); 9.7 S
Coyotitan (JFC 65:143); Culiacan (CSCLB 1446-47); 22 km. N Culiacan
(* KU 73532); 43 mi. N Culiacan ("LACM 6867); 5 mi. S Culiacan {JFC
62:52); 8.4 mi. S Culiacan (* LACM 6874); 36.8 mi. S Culiacan ('LACM
6875); 42.4 mi. S Culiacan (CSCLB 1451); 74 km. S Culiacan (' KU 73531);
50.9 mi. S Culiacan ("LACM 6881); 57.8 mi. S Culiacan (UAZ 16296); 61.5
mi. S Culiacan (" LACM 6876); 18 km. NE Elota, 30 m. (' KU 67673); 32.4
mi. N Elota, Rio (' LACM 6871); 24.7 mi. S Elota, Rio (LACM 6863); 31 mi.
S Elota, Rio (* LACM 6864); hwy. 15 between Escuinapa and Palmillas
(* LACM 6884-87, 7244); 27.3 mi. S Escuinapa (CSCLB 1448); 31.6 mi. S
Escuinapa (CSCLB 1449); 32.2 mi. S Escuinapa (CSCLB 1450); 5 mi. S
Espinal (CSCLB 1456); 14 mi. N La Cruz tumoff [hwy 15] ('LACM 6861);
66.4 mi. S La Cruz turnoff [hwy. 15] (JMS osteo. coll); 1 km. N Mazatlan
(CSCLB 1444); 1.4 mi. N Mazatlan ('LACM 6868); 3.2 mi. N Mazatlan
(UAZ 16297); 8 km. N Mazatlan ('KU 73530); 5.9 mi. N Mazatlan (* LACM
6880); 9.5 km. N Mazatlan ('KU 73528); 11.9 mi, N Mazatlan (* LACM
6858); 12.1 mi. N Mazatlan (* LACM 6860); 13.7 mi. N Mazatlan {'LACM
6859); 16.8 mi. N Mazatlan ('LACM 6865); 17.8 mi. N Mazatlan ('LACM
6862); 18.8 mi. N Mazatlan ("LACM 6879); 50 km. N Mazatlan (»KU
73529); 65.4 mi. N Mazatlan ('LACM 6870); 95.1 mi. N Mazatlan ('LACM
6866); 16.5 mi. SE Mazatlan ('LACM 6869); 1 mi. N Palmillas ('LACM
6877); 2 mi. S Palmillas ('LACM 25912); 11 mi. N Rosario (CSCLB 1452);
2.4 mi. NW Rosario ('LACM 6873); 2.2 km. NE Santa Lucia, 1155 m. (• KU
78941); Teacapan ("LACM 6878); 7 mi. S Terreros (* LACM 6882); 17 mi.
S Terreros ("LACM 6872); 32 km. (by hwy. 15) N Tropic of Cancer ('KU
80752); S Tropic of Cancer (CSCLB 1445).
Literature records.—3 mi. S Coyotitan, 450 ft. (Zweifel, 1959d:12); 18 mi.
NW Culican (Conant, 1965:17); Escuinapa (Zweifel, 1959d:12); 6-31 mi.
NNW Mazatlan (Duellman, 1957b:239); 6.6 mi. NNW Mazatlan, 100 ft; 8.3
mi. NNW Mazatlan; 10.3 mi. NNW Mazatlan, 200 ft.; 31.8 mi. NNW Mazatlan,
400 ft. (Zweifel, 1959d;12).
Additional records.—39.8 mi. N Culiacan, Rio (SU 23820); 8 mi. S Culiacan,
(CAS 95759); 10.2 mi. S El Salado (FAS 16805); 16.2 mi. S El Salado
(FAS 16808); 19.2 mi. S El Salado (FAS 16800); 5.2 mi. S Escuinapa (SU
23823); 9.7 mi. N Espinal (UF 16538); 3.8 mi. E La Cruz (SU 23822); 1 mi.
N Mazatian (UF 12803); 1.9 mi. N Mazatlan (ASDM 1753); 3 mi. N Mazatlan
(UF 12802); 6.8 mi. N Mazatlan (UF 16539); 11.2 mi. N Mazatlan (FAS