20 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



both activity range and sleeping site. The activity range is described 

 in terms of its horizontal extent and, since A. lineatopus are largely 

 arboreal, reference to its vertical extent is also included. I have 

 followed the suggestions of Milstead (1961) and, in calculating ac- 

 tivity range size, have omitted the occasional visits that certain A. 

 lineatopus made to perches well outside of the area where they were 

 usually seen, but I have plotted these visits on the maps included in 

 this paper. 



Anolis lineatopus may sleep in the same area where it spends the 

 day, perhaps climbing up and out onto one of the branches of its 

 principal perch. It may leave the area where it spends the day, 

 however, if there is no suitable sleeping site, and travel several yards 

 to find one. Anolis lineatopus that have mutually exclusive activity 

 ranges may all use the same sleeping sites. 



Of 15 adult females living in Barbican [fig. 6] for which I have adequate day 

 and some night records, 7 were recorded sleeping only within their activity ranges, 

 6 both in and outside of their activity ranges, and 2 only outside. The sleeping 

 places usually were less than 5 feet away from where the female spent the day, 

 but for one female they were 10 and 12 feet away. Of the 10 adult males [fig. 4], 

 5 were recorded sleeping only inside their activity range, 3 both in and out, 

 and 2 only outside their activity range. Two males regularly traveled 10 feet to 

 sleep but for other males the records outside of the activity ranges were mostly 

 3 to 5 feet away. 



The concept of an activity range wdth a definite size is useful since 

 it gives a datum for comparison mth other animals. It is, at best, a 

 crude approximation of the space actually utilized by the lizard. 

 First, it takes only slight account of the vertical range of the animal 

 and, for an animal that spends most of its waking horn's above the 

 ground, this is important. Second, the individuals do not visit all 

 parts of their activity ranges equally nor do they always range out 

 in a regular manner from a single center. Finally, an activity range 

 has definite boundaries only where it adjoins the activity range of 

 another A. lineatopus of about the same size (see p. 46 et seq.). 



Both the size and the shape of an activity range varies mth the size 

 and sex of the individual and with the number and distribution of 

 perches available. 



For adult males the usual activity range varies between 3 and 10 

 square yards, seldom probably is less than 3 and sometimes probably 

 as much as 20 square yards. It usually extends vertically from 1 to 3 

 yards, again sometimes less but probably never less than 1 foot and 

 seldom more than 5 or 6 yards. 



The shape is influenced strongly by the distribution of the perches 

 used. Where a single perch is used and the surrounding area is 

 uniform, the activity range is roughly cu'cular -with the perch in the 

 center. The activity range of the adult male (no. 4) mapped in 



