REPTILES 95 



Two specimens are in the collection from Hood Island. These 

 differ conspicuously in coloration from those specimens secured on 

 other islands and represent a well-marked color variety which is un- 

 doubtedly confined to Hood. 



Genus Anolis Daudin. 

 Anolis Daudin, Kept., iv, p. 50, 1802. 



Range. — Tropical and subtropical America. 



ANOLIS TOWNSENDI Stejneger. 

 Anolis townsefidi 'S)T^]^Y.G'E.K, Bull. Mus. Comp. Zobl., xxxvi, p. 163, 1900. 



Range. — Cocos Island. Common on vegetation and rocks every- 

 where. 



A typical specimen, an adult male, Cat. No. 4537, Stan. Univ. 

 Mus., shows the following characters : head narrow ; the snout sharp, 

 rounded at tip, depressed, the profile concave before eyes ; occipital 

 region flat; interorbital concave; canthus rostratus distinct nearly to 

 nostrils, covered by six scales ; nostrils lateral, separated by seven rows 

 of scales ; eye one and one half in interorbital width ; ear opening 

 elliptical, vertical, smaller than occipital plate, bordered by rounded 

 granules ; snout covered with keeled scales ; rostral broad and low, 

 rectangular, height two and one half times in length ; superior labials 

 six before middle of pupil; six loreals in a vertical series before eye; 

 fifteen enlarged, keeled supraoculars; two rows of scales between 

 supraorbitals ; four rows between occipital and supraorbitals ; mental 

 deeply cleft, elongate, extending on sides considerably past the rostral, 

 bordered posteriorly by six rows of chin scales, the median ones keeled, 

 outer larger, without keels; inferior labials six before pupil, similar in 

 shape to superior labials ; mandible covered with small oval keeled 

 scales ; gular-sac large, reaching from chin to end of sternum ; teeth 

 posteriorly trilobate, anteriorly becoming more slender and losing the 

 lateral cusps; no pterygoid teeth. 



Dorsum covered with juxtaposed keeled scales larger than the raised 

 granules of the sides ; vertebral series enlarged. Ventral scales keeled, 

 larger than the dorsals, imbricate, those on the gular-sac larger with 

 smaller keels; smaller on groins and inferior surfaces of limbs. Toes 

 covered inferiorly with a median series of transverse lamellae. Tail 

 covered dorsally with keeled scales, larger than those on the back, the 

 median series enlarged ; inferior surface of tail covered with keeled 

 scales similar in size to those on superior surface; no enlarged post- 

 anal scales. Limbs armed on their dorsal and anterior surfaces with 



