Peterson - p. 3 
the danger that it would displace forward relative to the body wall with 
loss of efficiency in transfer of propulsive force. The presence of such a 
"locking mechanism" reduces the total amount of girdle mobility which is 
available, but it provides the critical option for coupling the advantages 
of a mobile girdle with those of a linkage between the body and girdle which 
is efficient for higher speeds and leaping. 
The trends which are evidenced in the generic comparisons are also 
operating within the genus, There are significant differences in preferred 
speed of movement, arcs of limb movement, the mobility of the girdle and 
adaptations of the glenohumeral articulation. 
The behavioral survey of anoles examines the following variables: 
1) the range of perch diameters a species can negotiate, 2) differences in 
behavior related to perch orientation, 3) behaviors used to move to a new 
perch, 4) preferred gait and speed on a given perch, 5) amount of undulatory 
movement, 6) variation in the way cycles are combined into movement patterns, 
and 7) planes of limb action used in walking and the repertoire of limb 
positions available. There is sufficient film and observational data to 
indicate that ecomorphs converge rather markedly, With few exceptions they 
share more behavioral characteristics with each other than with any of their 
relatives which were examined or with any other member of their respective 
faunas. Comparison of the three faunas suggests that there is more behavioral 
differentiation within the Hispaniolan fauna than within the Jamaican fauna, 
Although the morphological comparisons are yet fragmentary, the available 
data suggest strong morphological convergence within ecomorphs and marked 
differentiation among them. The following behavioral-morphological profiles 
of the six ecomorphs being studied are preliminary and necessarily too 
brief, but they suggest preliminary correlations with the ecological obser- 
vations and a pattern within the radiation which is unexpected and interesting. 
Profiles for each ecomorph include morphological and behavioral data. Species 
referred to in the two sections are enclosed by parentheses, 
1. Canopy giant behavior (A. cuvieri, A. equestris, A. garmani); The 
preferred gait on 1,5" diameter perches is a walk, Two feet are always in 
contact with the substrate. Giants sometimes have difficulty on perches of 
this diameter and can't progress normally along perches of 1/2" diameter. 
They shift to suspensory or crosswise postures and leap away, Suspensory or 
crosswise postures permit the long hind limbs and short front limbs to grasp 
the same perch, Giants are reasonable though not spectacular leapers. 
Adaptation for leaping in the form of a disparity in fore and hind limb length 
coupled with large body size makes it difficult for them to negotiate single 
very narrow perches. They do, however, hop between mats of small diameter 
perches using two or more small perches simultaneously (one foot may even 
spread over more than one perch). 
p 
at an angle of 28-320 to the sagittal plane (compared to 27° in Chamaeleo and 
Morphology (A. equestris, A. richardi); The girdle is set on the body 
