NOTES ON CROTALUS MITCHELLII. 453 



posteriorly. Dotted everywhere above with dark brown 

 and black. This is much the palest of the ten. Length, 

 29.20 inches, exclusive of rattle. 



C. A. S., No. 654. Las Huavitas, L. C, W. E. Bry- 

 ant, 1889. Loreals 3-4. Lower preorbitals very small, 

 upper very large. Right prenasal very large, in contact 

 with rostral. Left prenasal obsolete, nostril separated 

 from rostral plate partly by two, partly by three rows of 

 scales. Labials fifteen to sixteen. One row of smooth 

 scales. Color, bright vinaceous-cinnamon, more pinkish 

 on head and neck. Dorsal markings faintly indicated 

 anteriorly by a slight deepening of the ground color in 

 patches, about whose edges the deep brown and black 

 punctulations are more or less crowded. Posteriorly 

 these markings reach the gastrosteges and become first 

 hazel, then chestnut. The tail is gray with three black 

 bars. Length to base of rattle, twenty-five inches. 



C. A. S., No. 764. Sierra El Taste, Cape Region 

 Lower California, Dr. Eisen, Sept., 1893. Loreals 3-3. 

 Two preorbitals on right side, lower very long and nar- 

 row. Three preorbitals on left, lower as on right. 

 Inter-naso-rostrals in partly one and partly two serie^on 

 right side; two series on left. Labials sixteen. One row 

 of smooth scales. Ochraceous-rufous mixed with ochra- 

 ceous-buff. Dark dorsal patches, visible even on neck, 

 cinnamon with a crowding of the black dots which occur 

 on almost the whole upper surface. Top of head Van- 

 dyke brown, changing to hair brown on temples. Band 

 under eye, and labials salmon-buff, the latter with cream- 

 colored tips. Tail gray, with black cross-bars. Length 

 to rattle, 35.75 inches. 



C. A. S., No. 765. San Jose del Cabo, L. Cal., Dr. 

 G. Eisen, Oct., 1893. Loreals 2-4. Preoculars— Lower, 

 on each side, is narrow and very long; upper on left is 



