18 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



Anolis lineatopus usually rests on the side of a vertical perch or on 

 the upper surface of a slanting or horizontal one, most frequently 

 with the head pointed toward the ground, a habit associated, I 

 suspect, ^^ith the large amount of food taken on the ground, as I 

 suggested for A. cybotes, a species with similar habits, in Hispaniola 

 (Rand, 1962). Though A. lineatopus may spend long periods on the 

 same perch, it seldom spends more than 15 minutes \nthout shifting 

 position or without displaying. Even between shifts the lizard is 

 usually alert, and in one 4-minute period when I watched an adult 

 male on his perch, he moved his head 12 tunes and the eye that I could 

 see also 12 times (the eyes move independently of each other) . During 

 this 4-minute period, the longest time mthout any movement was 

 45 seconds and usually only 10 or 15 seconds elapsed. 



The sort of perch an anole uses varies from species to species so that 

 sympatric species occupy different microhabitats (Collette, 1961; 

 OHver, 1948; Ruibal, 1961; and Rand, 1962, 1964a). This probably 

 acts to reduce interspecific competition (Rand, 1964a) just as the 

 different foraging zones do for sympatric wood warblers (MacArthiu*, 

 1958). 



Cover. — Cover near the ground is a more important habitat 

 requu-ement for female and juvenile A. lineatopus than for adult 

 males. Very few A. lineatopus maintain home ranges that include 

 no cover at all. Cover takes several forms: dense vegetation, grass, 

 herbaceous plants or ferns that grow around the perch; a pile of 

 dead sticks; a layer of large dead leaves; or occasionally a pile of 

 rocks. These provide protection against temperature extremes 

 (p. 14) and predators (p. 16). 



Sleeping sites. — Anolis lineatopus sleep dm'ing the night in 

 exposed situations above the ground, generally at elevations of 1 to 

 10 feet, usually at the ends of branches, the larger usually climbing 

 higher than the smaller individuals. They sleep on leaves, small 

 tA\dgs, and sometimes on grass blades that frequently are slender 

 enough to bend double under the weight of tlie anole. Many arboreal 

 and semiarboreal iguanids have sunilar sleeping habits, among them 

 Iguana iguana, Hirth (1963b), Basiliscus vittatus, Hu-th (1963a), at 

 least some Sceloporus olivaceus, Blair (1960), and Urosanrus ornatus, 

 Cowles and Bogert (1936). 



Sleeping A. lineatopus are usually visible from outside the bush 

 or tree and consequently are exposed to any flying predator hunting 

 by sight at night; however, they are concealed from any predator 

 that approaches from inside the tree and is forced to climb the branches 

 to reacli them. The small diameter of the sleeping perches presumably 

 would protect them from any large climbing predator, and even a 



