No. 4.— A Revision of the Inzards of the Genus Cyclura. 
By Tuomas Barsour AND G. K. NoBLeE. 
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 securing 
specimens, so that now the Museum of Comparative Zoélogy 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. rileyz 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 Zodélogical 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 Zodlogy, a gift of the N. Y. Zoélog- 
ical Society, was said to be from Navassa Island and seems to repre- 
sent the species confined to that island. In general, zodlogical 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 Zoélogical 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. 
