J58 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th See. 



these lizards were taken is on a lava bed which surrounds the 

 lagoon. No specimens were seen outside of this. They are 

 very rare and shy, and at one's approach go under the lava 

 and into crevices. Signs of cats are seen everywhere, and they 

 probably are the principal cause of the scarcity. 



Gardner-near-Charles, Oct. 2, 1905. Gardner Island is an 

 old crater. We landed on the N.W. side, which is the 

 only one accessible. It is very steep and covered with 

 broken lava and cactus shrubs. Tropiduri were shy and not 

 very common. They were found in about the same numbers 

 from the rocks on the coast to the top of the crater. It was 

 a bad place to hunt, and we stayed only a couple of hours, but 

 secured fifteen Tropiduri. 



Champion Island, Oct. 3, 1905. We then sailed on to 

 Champion Island, which is a very small crater and easily got 

 around. We covered this island in an hour and a half. Tro- 

 piduri were scarce here, and were found on the west side, 

 where all the seals stayed, as there is a little beach there. 

 There are lots of flies that go on the seals when they sleep on 

 the beach, and the lizards, therefore, find more food at this 

 place. 



Enderby Island, May 14, 1906. This island is part of the 

 ruin of an old crater and is composed of tufa. One side is too 

 steep to work on, so we went only along the top. The only 

 things seen in the way of reptiles were Tropiduri and a 

 gecko. The former were fairly common. Thirty-one were 

 secured in about an hour spent on the island. 



Tropidurus albemarlensis barringtonensis (Baur) 

 Barrington Island Lizard 



1892, Tropidurus barringtonensis, Baur, Festschrift fiir Leuckart, 1892, 

 p. 268 (type locality Barrington Island, Galapagos Archipelago). 



1903, Tropidurus grayi barringtonensis, Heller, Proc. Washington 

 Acad. Sci., V, 1903, p. 75. 



Diagnosis. — Sides of neck granular, with numerous folds; 

 hind legs of males without definite dark spots; interparietal 

 plate usually much broader than long ; not more than 76 scales 

 around middle of body ; scales smaller than in T. albemarlensis, 

 61 to 76 around middle of body. 



Type. — Dr. Baur's original description was based upon 

 thirty-eight specimens of this species from Barrington Island. 



