No. 4. — A Revision of the Lizards of the Genus Cyclura. 

 By Thomas Barbour and G. K. Noble. 



INTRODUCTION. 



Some years ago while working upon West Indian reptiles the 

 senior author became interested in Cyclura. Every opportunity 

 has been grasped which offered the slightest probability of securin'g 

 specimens, so that now the Museum of Comparative Zoology con- 

 tains more species of that genus than any other museum. That the 

 series is by no means large, will appear at once. The preparing of 

 this revision would have been difficult but for the friendly interest 

 of Mr. H. W. Fowler of the Academy of Natural Sciences of Phila- 

 delphia; the unique type of our C. nuchalis is in the Museum of the 

 Academy. We take great pleasure in dedicating C. stejnegeri from 

 Mona Island to Dr. Stejneger, through whose kindness a paratype 

 from the small series in the U. S. N. M. has been retained for the 

 M. C. Z. From the Carnegie Museum in Pittsburgh we have speci- 

 mens of C. rileyi and of C. macleayi, from the Isle of Pines, presented 

 in return for the identification, by the senior author, of the Carnegie 

 Museum series of West Indian reptiles. These he was allowed to 

 study through the kindness of Prof. L. E. Griffin. A number of 

 Rhinoceros Iguanas have been received from time to time at the New 

 York Zoological Park, have died and probably most of them have 

 found a resting place in the American Museum in New York. These 

 cannot now be found; one of the examples, however, now mounted 

 in the Museum of Comparative Zoology, a gift of the N. Y. Zoolog- 

 ical Society, was said to be from Navassa Island and seems to repre- 

 sent the species confined to that island. In general, zoological park 

 specimens, while very valuable for anatomical study, are often with- 

 out locality, although this is sometimes supplied from the fertile 

 imagination of an animal dealer. The fine series of examples of C. 

 carinata in the New York Zoological Park, was, however, a conspicu- 

 ous exception, since they were known to have come from Turks 

 Island. Unfortunately this entire, valuable series seems to have 

 been lost sight of, and a careful search at the American Museum of 

 Natural History failed to reveal a single one. 



