KENNETH MIYATA (MCZ), traveling with the Williams party in the summer 
of 1973, has obtained body temperatures and other data on two very special 
anoles, (1) A. (Tropidodactylus) onca and (2) Phenacosaurus heterodermus. 
Both of these are in effect "solitary" anoles, since they are not known 
to share their habitats with any other anoles, though lizards of other 
genera and families do occur, 
) A. onca - an anole which has lost the typical anoline peas pad - 
is still partially a climber, utilizing especially patches of thorny 
vegetation with grass at the base, sometimes climbing onto ae posts and 
even tree trunks and pipelines where these artificial constructions exist. 
It is sometimes seen on the bare ground (but much less frequently in 
August 1973 than in November 1972 [observations by Williams, Rand and 
Kiester], apparently a strong seasonal difference). 
Miyata watched one population for a full day on a two acre habitat 
ca 6 km north of Coro on the Istmo de Medanos - an area of elevated sandy 
soil with scattered small patches of thorny vegetation separated from other 
similar habitat islands by corridors of ca 100 m. He was able to keep in 
sight ca 12 animals; he was the better able to do so because the animals 
characteristically moved rarely. Most of the animals used perches of small 
diameter near the ground, Individuals perched on top of thick grass and 
dense mats of fine twigs and were generally basking in partial sunlight, 
except early and late in the day when they would be in full sunlight. 
Others were perched head down on their branches, 
Most movement during the day was within the thorn bushes, but later in 
the afternoon there was more movement into open ground, especially by males. 
Mean body temperature (37 individuals) was 33.6° + 0.6 (range 28.7°-37.4°). 
Body and air temperatures varied throughout the day; the warmest part of 
the day, and the highest body temperatures, occurred near noon, There was 
a constant high wind at this as at the other localities in which onca was 
seen, and this must have helped to keep temperatures down, 
Feeding was observed on only two occasions, once in the morning and 
once in the afternoon. In both cases individuals within a foot of the 
ground jumped down to take some small prey and then returned to their perch. 
It was not possible to see what was taken, However, in another area one 
large male was found with a recently taken C Cnemidophorus lemniscatus dangling 
from his mouth, 
