R. Zweifel 100 Feb. 25, 1952 Cnemidophorus tigris 12 mi. NE Tucson, Arizona, Feb., 1952. Received from Bill Woodin 2-23-52. 54-98 mm. Distal 1/2 of tail light blue, not brilliant. Dorsal ground color brown. Prominent yellow-brown paravertebral and dorsolateral stripes. Lateral stripes distinct, but paler in color - tan. Very faint spotting throughout the middle and two dorsal-lateral fields. In each lateral field there is a single row of large (area 0.5 mm.) light tan spots. Ventral surface pale blue. Mar 18, 1952 On a date of Mar. 15, Bill says that the lizard along with another cemi popped up from some dirt & dead cactus which he was raking. This was in February.