Biological Survey of Texas, Volumes 25-26

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General Books LLC, 2009 - 198 pages
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This historic book may have numerous typos, missing text, images, or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1905. Not illustrated. Excerpt: ... Specimens were collected near the edge of Transition zonexjn the east and west slopes of the mountains at 6,300 and 6,800 feet, but I assume that the species belongs to Upper Sonoran. A flat skin collected by Gary at a point 25 miles west of Sheffield is apparently this species. We found this snake in August, 1901, in the gulches high up on the range. It is pugnacious, quick to sound its rattle and throw itself on the defensive. Because of its prevailing color of olive green, we always referred to it in the field as the " green rattlesnake." Crotalus lepidus Kennicott. Five specimens of this little rattlesnake from western Texas, the mouth of the Pecos, Paisano, Chisos Mountains, and Davis Mountains, indicate a range confined to the most arid and rocky part of the State in both Upper and Lower Sonoran zones. The specimen from the mouth of the Pecos was in Lower Sonoran zone on the gray limestone ledges at the east end of the High Bridge. In color it is pale;ishen gray, with the pattern faintly indicated in dusky lines. The color has not changed materially in the alcoholic specimen from that of the live animal collected May 20, 1900, when I called it the ' white rattlesnake ' to distinguish it from anything previously known to me. Mr. Cary reports several seen on limestone ledges along the Pecos Canyon at Howard Creek and Sheffield, all of which were whitish in color like the lime rock on which they were found. One specimen from the Chisos Mountains at about 6,000 feet, one from Paisano, and two from 5,700 feet in the Davis Mountains, were all taken in Upper Sonoran zone. Others were seen in both the Chisos and Davis mountains at similar altitudes, but none lower. All of these specimens in life or when freshly killed, and the others seen but not collect...

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