8. CALLISAURUS 139 



The dorsal scales are very small and nearly uniform. There 

 are no fringes of movable scales on the digits, except in one 

 species. Long series of femoral pores are present. There 

 are two or more transverse gular folds. Males have en- 

 larged postanal plates. 



The presence of digital fringes in one species (C crinitus) 

 has led some authors to unite this genus and Uma. To me 

 it seems best to retain both genera, for reasons stated in 

 describing Uma. 



The known species and subspecies of Callisaurus may be 

 distinguished by the following 



Synopsis of Species and Subspecies 

 a. — A fringe of small spinose scales along one side of toes 



somewhat as in Lhjia. C. crinitus. — p. 140. 

 a'. — No fringe of spinose scales along sides of toes, 

 b. — Males with two nearly vertical lateral black blotches 

 usually followed by a third black spot; dorsal caudal 

 bars never black, usually with strongly undulate or 

 pointed posterior margins. 



C. d. draconoides. — p. 142. 

 b'.^ — Males with two large oblique lateral black blotches 

 usually not followed by a third black spot. 

 c. — Dark dorsal bars on tail with strongly undulate or 

 pointed posterior margins from base to beyond 

 middle of tail; dorsal tail bars never black. 



C. d. carmenensis. — p. 145. 

 C. — Dark dorsal bars on tail with nearly straight or 

 slightly undulate posterior margins at least from 

 middle to end of tail ; dorsal tail bars often black, 

 d. — Dorsal tail bars black in both sexes; usually more 

 or less red in dorsal coloration. Angel de la 

 Guardia Island. C. splendidus. — p. 148. 

 d . — Dorsal tail bars black in males only; usually 

 little or no red in dorsal coloration. 



