Rand - p. 2 
Thomas Jenssen has used the anole facility in his film loop experiments, 
investigating display repertoire and other behavior in A. limifrons, Rand 
hopes to continue and extend Jenssen's efforts in the development of tech- 
niques for the production of animated anole display films and an apparatus 
for showing these to anoles, 
Some additional minor discoveries have been permitted by the anole 
facility: 
1. The displays of Anolis (Tropidodactylus) onca are strikingly like 
those of Anolis chrysolepis and may be good evidence of relationship. 
2. Juvenile A. cuvieri are tan boldly crossbanded with darker on neck, 
pelvic area and limbs, This pattern changes to the essentially unicolor 
green or brown of the adults. The banded pattern of the young may (as in 
some skinks) be a device to prevent cannibalism by the adults. 
3. The adults of cuvieri have two morphs, brown and green, The change 
to the mottled grey brown of the brown morph is largely a fading of the 
juvenile crossbanding. The change to the green morph involves in addition 
a gradual enhancement of a greenish cast. 
4, Check of the stomachs of A. cuvieri shows little evidence of the 
extensive use of fruit that has been suggested for other giant anoles. 
A. cuvieri seems to be a specialist in large animal prey. They take very 
large insects as well as (as mentioned above) anoles. 
5. Anolis oculatus winstoni populations have been allowed to flourish 
at the Panama anole colony. They have now reached a very high level; 
adults are very numerous, eggs are being laid, but surviving young are few. 
Cannibalism may be one of the reasons for the dearth of young. 
With Williams, Rand has been studying the relationship of dewlap function 
to species recognition and faunal size. In simple faunas (one or two species 
islands) dewlaps serve to increase the displaying animal's apparent size, to 
identify its sex, to distinguish an adult from a juvenile, to discriminate 
the territory-holder from wandering animals, to signal the mood (aggressive, 
sexual etc.) of an animal and to call attention to an animal by making it 
conspicuous, Very clearly the dewlap is a major social signal but it is not 
a cue to species identity. This is demonstrated in the two species islands 
of the Lesser Antilles where the two species have very similar or identical 
dewlap colors. On these islands species identity is encoded primarily by 
body pattern. (In single species Lesser Antillean islands deme identity is 
similarly encoded by body pattern [A. marmoratus of Guadeloupe, A. oculatus 
of Dominica, A. roquet of Martinique].) 
Body pattern is a permanent advertisement of species identity. Its 
drawback is that the animal is always conspicuous. Where predators are few, 
this drawback is minimized, One or two species islands are small; the fauna 
including predators is depauperate; hence the permanent conspicuousness of 
body pattern does not in these animals override its benefit, 
