T. P, WEBSTER (MCZ) has employed the technique of gel electrophoresis 
to attempt to evaluate intraspecies genic variation and interspecies genic 
similarity for a number of anoles, The following are the cases currently 
under investigation. 
(1) A "solitary" anole: Anolis agassizi of Malpelo Island, This 
morphologically very distinctive species was available from collections 
made by A. S. Rand, A. R. Kiester, G. C. Gorman and others, with the 
assistance of the U. S. Navy. 
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(a) From data on proteins representing 30 genes, A. agassizi was 
estimated to show an average heterozygosity at 2.1% of its loci, This low 
value is similar to that found in other solitary anoles and in some anole 
populations of very recent origin (i.e. interpreted as showing the "founder 
effect" restriction of genic variability). 
(b) Very little genetic similarity was found in the comparison of 
A. agassizi with five congeners, including two members belonging to the 
South American latifrons group from which the Malpelo species is believed 
to be derived, 
(2) The Anolis distichus species group. Webster and Burns combined 
the evidence of dewlap color variation and electrophoretic difference to 
demonstrate that a north-south series of populations of the brevirostris 
complex in Haiti in fact includes three species (A, B. C). The pattern of 
dewlap color variation strongly suggests that this character has an 
important role in reproductive isolation. Webster is now extending his 
analysis to other populations of A. brevirostris, specifically those on 
Gonave and at many localities in the Dominícan Republic. 
On the basis of four animals from Picme, Gonave is inhabited by 
Species B, It is identical to populations on the coast north of Port-au- 
Prince, except that further work is required to establish differences or 
similarities in the esterases, Earlier it was found that A. brevirostris 
from Jacmel and Marigot, Haiti, are identical to populations north of 
Port-au-Prince, except for esterases. Thus, at present, Species B is known 
from two geographically isolated areas of Hispaniola and one of its 
peripheral islands, 
Populations from the western Valle de Neiba in the Dominican Republic 
have monochromatic dewlaps and on this basis are probably a continuation of 
Species C in the Haitian Plaine de Cul de Sac, In the eastern Valle de 
Neiba and along the coast of the Barahona Peninsula, from Barahona to 
Enriquillo, the dewlap is often bicolor with the basal spot offset toward 
the rear margin. Populations from the arid tip of the Barahona Peninsula 
have pale or bicolored dewlaps with the basal spot centered, 
