50 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



No. 161 ignored all this going on within 2-3 feet of her. When No. 163 

 retreated from her activity range she approached the fence where another small 

 female lives (No. 156). This female ignored No. 163 today. 



1400-1430 lu's. No. 163 made another attempt to enter her old activity 

 range and retreated once more before No. 148's approach. 



29 January, 815-830 lirs. No. 163 was back in her activity range this morning 

 but No. 148 soon chased her out again. No. 163 fled toward the fence again 

 but this morning No. 156, who had ignored her on 27 January, chased her back 

 towards the brush heap. No. 148 chased her back toward the fence. No. 156 

 again chased her away. This time No. 163 moved to a small plant on bare ground 

 midway between the fence and the brush heap and spent the rest of the morning 

 there. No. 148 moved north out of No. 163's old activity range and spent the 

 morning on the branches on the southeast edge of the big brush heap. 



Encounters between similar sized individuals sometimes involved a 

 resident and another A. lineatojms that was a stranger to the area. 

 Presumably most of these strangers are the subadult and young 

 adult males (p. 31). Probably most A. li7ieatopus that change their 

 home range are attacked when they cross or attempt to settle in an 

 area that is already part of the home range of an A. lineatopus of similar 

 size. 



In some of the encounters between residents and strangers, the 

 stranger fled quickly, as in the following two incidents. 



(5) 2 February — Barbican brush heap [fig. 4]. A stub-tailed adult male 

 appeared within the activity range of No. 159 (adult male). No. 159 approached 

 him to within about 6 inches, both had crests up and both bobbed and dewlapped. 



The intruder ran by No. 159, leaving 159's activity range and into that 

 of No. 6 (adult male). No. 159 followed, actually invading the edge of No. 6's 

 activity range, to display at the intruder, who ran a bit farther then climbed 

 down inside the brush heap and disappeared. 



After a few moments. No. 159 retreated into his own activity range. 



No. 6 had ignored this whole business from his perch on the other side of 

 his territory. 



(6) 19 February — Barbican brush heap, 0832 hrs. An unmarked bobtailed 

 adult male appears in the small brush heap. No. 1 is on rock and probably 

 cannot see intruder. 



The bobtail hops into shade of log. 



0835 hrs. Bobtail hops onto log. 



0841'/^ " Bobtail moves to tree out of sight of No. 1. 



0846 " Bobtail moves into full view of No. 1 at 2 feet up on tree. 



0849;'2 " No. 1 begins bobbing, giving several series of step bobs. 



0850>^ hrs. No. 1 runs toward tree; when No. 1 is still 4 feet away, bobtail 

 jumps to ground on the other side. No. 1 stops in brush heap, step bobs and 

 dewlaps. 



0851 hrs. No. 1 jumps 6 inches further towards tree, bobtail runs 2 feet 

 further away. 



0851K hrs. No. 1 moves onto tree. Bobtail leaves area completely, going 

 south. 



The intruding lizard, however, is not always defeated. 



(7) 6 September — Mona. No. 26 (49 mm male) came to ground [from the 



