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 toivnsendi STEJNEGER, Bull. Mus. Comp. Zool., 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 lamellaB. 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 



