272 BARBOUR: ZOOGEOGRAPHY. 



French edition I know less, only that pis. 4 and 18 were published in 1838. — 

 Therefore Chamaeleolis Cocteau 1838; Anolis chamaeleoides Dum. & Bibr. 

 1837; Chamaeleolis fernandina Cocteau 1838." 



Xiphocencus valenciennesii (Dumeril et Bibron). 



Dumeril et Bibron, Erpet. gen., 1837, 4, p. 131. Boulenger, Cat. lizards Brit, mus., 1885, 2, p. 9. 

 Barbour, Bull. M. C. Z., 1910, 52, p. 293. 



This conspicuous lizard is uncommon upon Jamaica, the only island where it 

 occurs. The genus is not represented elsewhere in the West Indies. The only 

 other species known occurs about Bogota, in Columbia. It also is very rare in 

 collections, so that I have not been able to assure myself as to their really belong- 

 ing to one genus. Such a discontinuous distribution can only mean that the 

 genus is a very old one, which once ranged through Central America and to 

 Jamaica while the latter was joined to that area, and that it has died out every- 

 where except about Bogota and in Jamaica; or it may be that these similar spe- 

 cies have come to look alike by some process of convergent evolution, and that 

 they have no actual relationship with one another. Central America may not 

 have extended to Columbia while it was still one with Jamaica. There would 

 seem to be no special reason why such a genus should die out in Central America; 

 and yet among birds Sycalis jamaicae Sharpe is confined to Jamaica, and except 

 for a closely circumscribed species peculiar to western Mexico, all the other mem- 

 bers of the genus occur in South America from Columbia southward. 



Anolis equestris Merrem. 

 Merrem, Syst. Amphib., 1820, p. 45. Botjlenger, Cat. lizards, Brit, mus., 1885, 2, p. 21. 



The largest and most conspicuous member of the genus. It occurs only in 

 Cuba, although it has been recorded from Jamaica. Within the island, its range 

 is general, since in the Museum there are specimens from Havana and Santiago 

 de Cuba, as well as from other localities. The specimens which Garman re- 

 corded from Bahia (Bull. Essex inst., 1887, 1-9, p. 27) came, of course, from 

 Bahia Honda, Cuba, not Bahia, Brazil. This is not made at all clear in the 

 context, where he suggests that it may represent another species. 



Upon my trip to Cuba in 1912 I made special search for this lizard, which I 

 found far from common. I shot a half grown individual in a tree in the 

 mountains near San Diego de los Bafios, procured a fine adult, living, from a tree 

 in the lowlands near Herradura, and saw two, only one of which was caught by 

 the aid of Dr. J. L. Bremer, near Madruga. No other specimens were observed, 



