W. Reimer 1949 Journal 27 June Noble Creek to 22.5 mi. ESE Desert, Millard Co., Utah. Utah the result of isolated pockets of snakes which we haven't discovered or is the population simply thinly dispersed? The general uniformity of terrain and vegetation would seem to rule against the former. Yet how do these thin populations, if they are such, meet a member of the opposite sex in breeding season frequently enough to maintain the population. Does it a chance matter? Does the small chance of meeting keep population down? Why shouldn't breeding potential surpass mortality or vice-versa. Seems unlikely that rate of reproduction and mortality should so nicely balance in thin population where infra-specific competition so slight. After leaving dune area ran into what appeared like population pocket of Pituophis catenifer. Many DOR's on road in short distance. Recorded at following distances NE Delta, Millard Co.: 8.5 mi., 7.6 mi. (2 specimens), 7.2 mi. (P. Stellbrin catalogue), 4.8 mi. (2 specimens), 4.1 mi., 2.8 mi. Coluber taeniatus DOR's taken at 1.3 mi. and 2.3 mi. NE Delta. All for record only except one noted as in P. Stellbrin catalogue. 3 mi. WSW Delta stopped to search stream and found only