Sept. 4 
1909 BARBOUR — SOUTH AMERICAN VERTEBRATES 49 
common. ‘This species was not represented in the British Museum 
when Boulenger wrote his catalogue, nor was it, up to now, in either 
the United States National Museum or the Museum of Compara- 
tive Zodlogy. In southern Chile, in small ponds, Rhinoderma 
darwintt D. and B. was abundant. In December eight males, 
out of about sixty individuals of both sexes, were found to be carry- 
ing tadpoles in the throat pouch. In the Cordillera of the Argentine 
Liolaemus fitzgeraldi Blgr. was found in the Horcones Valley near 
Mt. Aconcagua, whence came the types, and the species was ob- 
served at an elevation of about 12,000 feet near Las Cuevas, the 
Argentine frontier post on the ‘Transandine route to Chile. Ona 
hill not far from Tiaguanaco in Bolivia, at an altitude of a little 
over 13,000 feet, three specimens of the recently described Lzolae- 
mus lenzii Boettger, as well as the new species of the same genus 
described below, were found. A specimen, from Bolivia, of the 
rare Drepanodon anomalus (Jan) has been identified for me by Dr. 
Stejneger. 
My thanks are due to the companions whose loyalty to Harvard 
University prompted them not only to render every aid in making 
the various collections, but also made their efforts pleasures. I 
mention especially Prof. A. C. Coolidge, Dr. H. Bingham, and 
Mr. C. L. Hay. To my wife, my most consistent helper in many 
climes, and to our friend Mrs. W. A. Russell, my deepest thanks are 
also due. 
As so often, I owe a great deal to Dr. L. Stejneger for kind criti- 
cism and advice. 
While I was in Bolivia several foreigners with mining interests 
in the tropical eastern part of the country, described to me a peculiar 
lizard, which from their description appeared quite new. ‘Thanks 
to the efforts of one of these friends, a specimen was waiting for 
me on my return to the Museum. I took it to Washington, where 
Dr. Leonhard Stejneger agreed that it represented a very remark- 
able, hitherto unknown, species. It may be known as 
