T. Rodgers -1941 1 flagellum Coluber constrictor mormon Sept. 10. Mus. Vert. Zool., Univ. Calif., Berkeley, Alameda Co., Calif. Color description of Coluber flagellum. Specimen collected by S. F. Cook Jr. 12 mi. SW Fernley, Lyon Co., Nevada, May 30, 1941. (T. R. 2773, p. 186 acc. no. 6645). From Ridgway, Col. St. and Nom., 1912. Top of head between Buffy Brown and Olive-Brown (Pl. XL, 17''', j). General appearance of dark parts of back about the same, with distol ends of scales Olive- Brown and proximal ends Light Grayish Olive (Pl. XLVI, 21'''). Lighter scales of back are less green than Light Grayish Olive (no green). The basal ends of the darker scales along the first 6 inches of the back and sides are edged with a color that is Apricot Orange (Pl. XXVIII, 11''). The basal ends of the lighter scales are edged (especially laterally) with white. Posterior to the first 6 inches, all the scales are edged prox- imally with White or Tawny-Olive (Pl. XXIX, 17'', i). The snake is lighter at the tail (gradual gradation throughout whole length of snake). Scales on the tail are slightly darker and slightly grayer than Buffy Brown (Pl. SL, 21''', j) distally and less green than Dark Olive-Buff (Pl. XL, 21'') proximally. The scales with white edged bases are so arranged as to give an indistinct affect of transverse lines or rings extending from one edge of the ventral scutes, over the back to the other edge of the scutes. Under side of head and first inch of throat white, spotted with brown, slightly lighter than on top of head. Next foot of body Cream-Buff, which, on close examination can be seen to be mottled with white. A- long this section of belly, there is a double row of light brown spots that are tinged and surrounded with Cream-Buff. The rest of the belly, back to the vent, is lighter, with a pearly luster. It appears Pale Pinkish Buff (Pl. XXIX, 17'' f) in the right light and, laterally with belly, Primrose Yellow (Pl XXX, 23'', d). The ventral side of the tail has more Pale Pinkish Buff and less Primrose Yellow.