The reptile book; a comprehensive popularised work on the structure and habits of the turtles, tortoises, crocodilians, lizards and snakes which inhabit the United States and northern Mexico . aybe instantly told by the large plates of the head. Dimensions.—Like the typical form. Distribution.—The range of this variety begins from theextreme southern distribution of the typical form and extendsfrom the Indian Territory, throughout western Texas, and west-ward to about the central portion of southern Arizona. It alsooccurs in northern Mexico, adjacent to the boundary. Habits.—It seems that this
The reptile book; a comprehensive popularised work on the structure and habits of the turtles, tortoises, crocodilians, lizards and snakes which inhabit the United States and northern Mexico . aybe instantly told by the large plates of the head. Dimensions.—Like the typical form. Distribution.—The range of this variety begins from theextreme southern distribution of the typical form and extendsfrom the Indian Territory, throughout western Texas, and west-ward to about the central portion of southern Arizona. It alsooccurs in northern Mexico, adjacent to the boundary. Habits.—It seems that this reptile is less partial to dampsituations than the preceding form. The Rattlesnakes—Crotalus: The present genus embracesthe Rattlesnakes proper. The species may be recognised fromthe preceding genus of small Rattlesnakes by the scalation ofthe head; this small and granular. A few of the species havesmall shields on the forward portion of the snout—in front ofthe eyes. Fifteen distinct species and several varieties of Crotalusare known. Eleven of the species and two varieties arefound in the United States. Concerning the latter, a key isgiven: 438 THE REPTILE BOOK PLATE CXXIX. 1
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Keywords: ., boo, bookcentury1900, bookcollection, bookdecade1910, bookyear1915
