Amphihians and Reptiles from Porto Rico and the Virgin Islands. 11 



appearance, and in some cases they are finely vermiculated. Many examples 

 are more or less olivaceous. In a small series from Guanica one example 

 shows a quite distinct whitish vertebral stripe. Several are pale or light gray. 



A large series from U tuado, collected both in the town and down the Arecibo 

 River, June 12, are very variable, both in color and squamation of the head. 

 In color these examples appear much more mottled than others. The chin 

 and throat are variable, and may be streaked or uniform, especially in small 

 or young examples. Some show a considerably developed nuchal crest. 

 Often the labials may be marked with dark blotches, giving the lips a cross- 

 barred appearance. Some examples show five or six obscure dusky or blackish 

 saddles on the back. Occasionally a pale vertebral band is seen down the 

 back. Though the squamation of the head is quite variable, usually the 

 supraocular semicircles have two pairs of plates in contact, often one or two 

 small ones may be interpolated in the median line, and occasionally a median 

 series of small scales (in one instance double) entirely separates them. The 

 largest of this series is 175 mm. in total length. 



Thirteen examples obtained at a small settlement up the Rio Grande, 2 

 miles from Arecibo, on June 14, 1915. Several show a pale vertebral streak on 

 the back and a longitudinal blackish streak along each side of the back, mostly 

 with narrow pale bordering line. Sides of body may also present obscure 

 irregular dark blotches forming smaller spots or speckled appearance below. 

 In some, the lower surface of the body is yellowish in alcohol. 



Two from the Arecibo River near the 70-kilometer post, June 14, 1915. 

 One light gray, conspicuously mottled with darker, another with the pale 

 vertebral band bordered each side with a blackish lengthwise band. 



A large series from the Virgin Islands, many showing the white vertebral 

 band on the trunk, occasionally interrupted. Many have the chin speckled. 

 Frequently a dark spot occurs behind the occipital plate, sometimes divided 

 to form one on each side. 



Anolis stratulus Cope. 



Four from Guanica, 2 from Utuado, 3 from a small settlement up the 

 Rio Grande 2 miles from Arecibo, Porto Rico, and 3 from the Virgin Islands. 

 Considerable variation in color is noticeable and a fev»^ show distinct dark 

 saddles on the back. All are more or less finely speckled with darker color; 

 in some cases the marbling gives quite a variegated pattern, due to the variable 

 small or large dark spots. The Virgin Islands examples show the back marked 

 with blackish transverse saddles. Dewlap bright j^ellow in alcoholic speci- 

 mens. 



Variation in the squamation is often seen. Some specimens show one or 

 two pairs of plates of the supraorbital semicircles in contact. 



Anolis krugi Peters. 



Five examples from Guanica, Porto Rico, now show the dewlap red. 



Ten from Utuado, on June 12, show^ the dewlap crimson in alcohol. Sides 

 and lower surface largely brilliant yellow. In these examples the squamation 

 of the supraocular semicircles is often quite variable. While they may be 

 separated by one row of scales, or sometimes two rows, the rows are frequently 

 incomplete, so that the supraoculars may be in contact with at least one of 

 their pairs. 



Five from the Arecibo River near the 70-kilometer post, on June 14. These 

 all have but one row of scales between the supraocular semicircles. 



