SCHMIDT, THE HEMATOLOGY OF PORTO RICO 191 



Anolis pencensis Stejneger 



Thirty-eight specimens of this species were collected at Coamo Springs 

 and Ensenada. This very distinct species of Anolis is confined to Porto 

 Kico, and specifically to the arid southwestern area from Coamo Springs 

 to Ensenada (and probably to Cabo Eojo). 



Anolis poncensis is a highly unique species, not only in its lepidosis, 

 but in the extremely small size of its throat fan, scarcely one-third as 

 large as that of A. pulchellus or A. krugi when extended. There is little 

 variation in the present series, which is much the largest hitherto ex- 

 amined. The coloration described by Stejneger is characteristic and con- 

 stant. The females invariably have a broad mid-dorsal band. The loreal 

 rows in a vertical line are three in eighteen specimens, four in twenty. 

 The scales between the occipital and the supraorbital semicircles are none 

 in two specimens, one in twenty-one, and two in fourteen. The scale rows 

 separating the supraorbital semicircles are none in thirty-two specimens, 

 one in six. This species was found associated with Anolis cristatellus 

 and with a rare A. pulchellus, at both Coamo Springs and Ensenada. 

 Broadly speaking, it replaces A. pulchellus in the southwestern part of 

 the island, inhabiting fences and grazing land much as A. pulchellus does 

 in the remaining part of the island. A few specimens were found on the 

 arid cactus-covered hilltops about Ensenada. Near Coamo Springs this 

 species occurred in colonies, sometimes a mile or more apart. 



Cyclura Harlan 

 Cyclura stejnegeri Barbour and Noble 



One specimen of this species was collected on Mona Island. This 

 single specimen is a very old male with the irregular development of the 

 large tubercular scales of the head characteristic of old specimens of this 

 group. The nasal is separated from the rostral on one side by a space 

 filled with very small scales; on the other by a large tubercular shield. 

 A third "comb" is plainly distinguishable on the third toe. The scales 

 of the reproduced tip of the tail are not arranged in verticils. 



The measurements as as follows : 



Total length (tail reproduced) 910 mm. 



Body 470 " 



Length of head 127 " 



Breadth of head 79 " 



Foreleg 173 " 



Hind leg 2G0 " 



