56 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



interspecifically and frequently both species will live on the same tree. 

 Part of the small amount of interaction is due to a difference in 

 preferred perches but sometimes two adult males sit quietly a foot 

 or two apart ignoring each other. Interactions are seen, usually 

 no more prolonged or intense than the following. 



(12) 5 February — Barbican brush heap. No. 1 was on south stake. A male 

 grahami ran up stake, No. 1 jumped off and bobbed and dewlapped, his crests 

 raised. The male grahami dewlapped and then after a moment jumped off in 

 another direction and eventually climbed a tree. 



Interactions between females and subadults of the two species 

 were much more frequent and pursued more vigorously than between 

 the adult males. 



(13) The best example of this sort of interaction involved a female grahami, 

 No. 165, and several female lineatopus. The grahami lived on the small tree 

 in the Barbican brush heap and the female lineatopus frequently visited it. One 

 of them, No. 145 {ca. 43 mm long) used the tree as one of her principal perches, 

 as well as using the brush heap around it. The grahami repeatedly chased No. 

 145 off of the tree over the month of observation but seldom followed her into 

 the brush heap and never came to the brush heap to chase her. The other two 

 lineatopus females, Nos. 162 (39 mm long) and 161 {ca. 29 mm long) visited the 

 tree less frequently. As has been described, the larger lineatopus female (No. 

 145) chased the smaller ones from the tree, and the grahami did this also, once 

 following the smallest female, No. 161, into the brush heap and chasing her about 

 for several minutes. 



The behavior of the grahami to the lineatopus was, as far as I could see, 

 identical to her behavior toward other grahami except that she did not start to 

 chase the lineatopus unless they were on the tree, but once left her tree to chase 

 a female grahami that was approaching it and still 4 feet away. 



The interaction between the two species is reciprocal, as the follow- 

 ing notes show. 



(14) 23 January — Barbican brush heap. No. 145 chased a small grahami, 

 35±mm SV, making three charges at it. No. 162 at south end of log displayed 

 to a small grahami which ran. 



(15) 10 April — hibiscus hedge, Mona. A small female-sized grahami came 

 down to the ground to drink from the rain water which had accumulated in a 

 cup-shaped dead leaf. A lineatopus of about the same size which was sitting on 

 a stick a few inches away first bobbed and then jumped at the grahami who fled. 



Not only do A. grahami and A. lineatopus fight but the male of 

 the latter occasionally courted the female of the former and pre- 

 sumably the male A. grahami courts the female A. lineatopus. 



(16) 12 April — hibiscus hedge. No. 13 (60 mm male) chased a female sized 

 grahami from tlie hibiscus next to his usual fence post to the next fence post, 

 clearly courting it. He has also courted No. 11 (a 44 mm male lineatopus) twice 

 this morning. 



Though most observations were on reactions between A. lineatopus 

 and A. grahami, I also saw reactions with A. opalinus and with A. 

 garmani. 



