| geographical variation in crotalus scutulatus scutulatus (mojave rattlesnake) venom properties. | individual venom samples were analyzed from 12 specimens of crotalus scutulatus scutulatus, from north of tucson to the extreme southeastern region of arizona. six of the specimens, from north of tucson, produced venom lethal toxicity (i.p. ld50) values in mice of 2.0-6.0 mg/kg. these coincided with the values previously reported for c. s. scutulatus in the phoenix, arizona, region and designated as type b venom (glenn and straight, 1978). in contrast, the venom ld50 of six individuals from extr ... | 1983 | 6342208 |