( XX ) 



Cham^leo. 

 Characters of order, ' 



Colours vary under emotion ... C. vulgaris. 



Order OPHIDIA. 



Sub-Order. — Innocuous Snakes. 



Poison gland, none. 



Family TYPHLOPID^. 



Ventral scales not enlarged. Mental groove none. Upper 

 labials four. Snout covered with large shields. Rostral rounded. 



Typhlops, 



Frontinasal in contact with second labial. 



Scales in 26 longitudinal rows ... T. Horsfieldii. 



Scales in 24 longitudinal rows. Snout sim- 

 ple ... T. striolatus. 



Scales in 24 longitudinal rows. Snout 



grooved ... T. bothriorhynchus. 



Scales in 22 longitudinal rows. Tail long... T. Theobaldanus. 



Scales in 22 longitudinal rows. Tail short.. T. tenuicollis. 



Scales in 18 longitudinal rows. Body very 



slender ... T. porrectus. 



Scales in 18 longitudinal rows. A lower 



prseocular . . . T. Andamanensis. 



Frontinasals separated from the labials. 



Scales in 20 longitudinal rows. Habit 



moderate . . . T. braminus. 



Scales in 20 longitudinal rows. Habit very 



slender ... T. pammeces. 



Scales in 18 longitudinal rows. One prse- 



and one sub-ocular ... T. mirus. 



Onychocephalus. 

 Snout covered with large shields. Rostral sharp edged in front. 

 Bronze above, yellowish below ... 0. acutus. 



