306 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ue 



in preceding summers, ringneck snakes previously had not been found 

 there. Another individual found in the riparian association displayed 

 typical tail-curling behavior as did the above specimen (pi. 4). A 

 female found September 13, 1958, at 6400 feet in an area of broken 

 lava and sandstone contains 18 eggs, the largest being 2.5 nun. in 

 diameter. It is 650 mm. in total length and has three divided ven- 

 trals, including the first one anterior to the divided anal plate. 



Three live specimens from Cottonwood Gulch (6 mi. S. Thoreau) 

 suggests that some color change may occur during the growth of D. p. 

 regalis. The smallest, 268 mm. total length, collected June 29, 1961, 

 has a yolk-sac scar and is slate gray above with a bright-yellow belly 

 and the characteristic red subcaudal surface. Another, 377 mm., is 

 similar to the juvenile ventrally but has a greenish-gray dorsum. The 

 largest specimen, 478 mm. with a stub tail, has an orange-yellow 

 belly that shades into coral red in the region of the vent and is also 

 greenish gray dorsally. Its individual dorsal scales are mottled with 

 black and have a black spot at the anterior end (pi. 4). In each of 

 these three ringnecks, the belly is moderately to heavily spotted with 

 black as in all other southwestern and Mexican specimens. 



LocaHty records: 



MCKixLEY CO.: 6 mi. S. Thoreau (UMMZ 120276, 122627, 122947); Valencia 

 CO.: 6 mi. E. Grants (UNMCV 158). 



Comparative material examined : 



D. p. regalis. — New Mexico: bernalillo co.: SW>^, Sec. 22, TON, R4E 

 (UNMCV 412); Jaral Canyon, Sandia Mts. (UNMCV 36); catron co.: 3 mi. 

 N. Glenwood (BYU 13976); doxa ana co.: Mesilla Valley (USNM 22376); 

 GRANT CO.: Mogollon Creek, above falls (UNMCV 159); Lincoln co.: 12 mi. 

 NW. Carrizozo (UMMZ 66774); sandoval co.; E. Sandia Pueblo (UNMCV 

 413); Pena Blanca (UNMCV 131); 25 mi. N. Albuquerque (UNMCV 163); 

 SIERRA CO.: Lake Valley (ANSP 10786); torrence co.: Mountainair (UNMCV 

 411); Arizona: cochise co.: 0.5 mi. SW. Portal (UMMZ 119029); Bisbee 

 (CU 4694-5); Pinery Creek, Chiricahua Mts. (AMNH 80807); 2 mi. W. Ft. 

 Huachuca (USMN 102201); Ft. Huachuca (USNM 21061); gila co.: Roosevelt 

 (UNMCV 2698-9); final co.: Camp Grant (USNM 8019); navajo co.: Ft. 

 Apache (USNM 8427); pima co.: Sabino Canyon, Santa Catalina Mts. (USNM 

 62569); Sycamore Canyon, Baboquiviri Mts. (ANSP 17998); Otero Canyon, 

 Baboquiviri Mts. (ANSP 17953); Ft. Buchanan (ANSP 3465); santa cruz co.: 

 Madera Canyon, Santa Rita Mts. (ANMH 64428); 10 mi. N. Nogales (AMNH 

 67253); yavapai co.: White River Canyon (USNM 10199); Camp Verde 

 (AMNH 4202, 62240); Utah: san pete co.: Freedom (UMMZ 63999); utah 

 CO.: S. Fork West Canyon (BYU 13775, 14168-9, 14672-3); Washington co.: 

 Pine Valley (CU 3836); Mexico: chihuahua: Maguarichic (UMMZ 118929); 

 6 mi. E. Barraganes (AMNH 73749); Norogachi (AMNH 73751); 10 mi. W. 

 San Francisco del Oro (BYU 14251); 7 mi. SW. Pacheco (MVZ 46685). D. p. 

 dugesi. — Mexico: hidalgo: 8 mi. N. Pachuca (UIMNH 17635); jalisco: 

 10 mi. W. Guadalajara (UIMNH 46578, 47866) ; Guadalajara (AMNH 3711- 

 12); W. Ocotlan (AMNH 19723); mexico: (AMNH 62827); 3 mi. S. Villa 

 Obregon (UMMZ 99540); michoacan: 2 mi. E. Morelia (AMNH 62827); 



