X^uJ BREVIORA MMsemim of Coeiparative Zoology Cambridge, jMass. Deckmbek 31, 1963 Number 197 ANOLIS WHITEMANI, NEW SPECIES FROM HISPANIOLA (SAURIA, IGUANIDAE)i By Ernest E. Williams Miss Cochran in 1941 commented on the apparent extreme variability of Anolis cyhotcs cyhotes, mentioning among other points that "some of the specimens have heavy keeling on the ventrals ; in others from precisely the same locality, taken at the same time, the ventrals are perfectly smooth." Inspection of material referred to cyhotes in the Museum of Comparative Zool-ogy, the United States National Museum, and in the unreported collections of the American Museum of Natural History revealed that this phenomenon of sharp dimorphism in regard to keeling was curiously localized and that many of the localities were in the Cul de Sac Plain in Haiti and in its continuation in the Dominican Republic. A closer look at the specimens from this area showed further that there were indeed two kinds of cyhotes-like anoles represented, and that they were in fact reported as taken at exactly the same localities by the same collector on the same dates. There seemed, however, to be not a difference in a single character but in several independent characters. The suspicion thus arose that species difference and not intraspecies dimorphism was involved. The suspicion was sharpened when P. S. Humphrey, collecting for Yale University and the Univer-sity of Florida in 1959, lirought back only two cybotcsAike anoles from the Cul de Sac region, one of each type. The fresh material permitted also an increased confidence in a color difference which had seemed to exist in the specimens long in collections. When, therefore, in August 1959, E. E. Williams and A. S. Rand planned a visit to Haiti, one of the objectives was to obtain and examine alive a series of the keeled cyhotcs-like anole from the Cul de Sac. 1 Notes on Hispaniolaii herpetology no. 9.