234 



SPOLTA ZKYLANTCA. 



INDEX. 



N.B.— The following common characters may be regarded as occurring 

 normally since they are presented Avith great frequency and are therefore 

 not specially noted in the index ; they are to be presumed unless otherwise 

 stated : — 



(a) Anal Shield divided ; (b) Head not clearly distinct from neck ; (r) 

 Internasals paired ; (^/) Loreal single, separated from eye ; (0 Prseocular 

 single : (f) Pupil round ; (^) Rostral barely visible from above ; (/*) Scales 

 equal and smooth ; (^) Subcaudals paired. 



Anal shield entire i to v.. vi., ix., xi. 



XX. 



Head distinct from neck, x., xi., xviii., 

 xix., XX., xxi to xxiii., xxiv to 

 xxvii., xxix to xxxi., xxxii., 

 xxxiii.. xxxiv . xxxriii. 



Internasal single, i to v.. vi.. xxviii. 



Labials' six. i to v., xxxv. 



Labials seven, vi., x., xi., xiii., xiv., xv 



to xvii., xxvii., xxxvi., xxxvii., 



xxxviii. 

 Labials eight, vii., xviii., xix., xxiv.. 



XXV.. xxix., XXX., xxxii., xxxiii. 

 Labials nine, viii., ix., xii., (9-10), xx., 



xxi. (9-10)., xxii., xxiii, (8-9), 



xxvi., xxviii., (8-9) xxxiv.,(9-10). 

 Labials indefinite, xxxi., (8-11). 



Tioreal absent, i to v., vi., xxxii., 

 xxxiii.. xxxv., xxxvi., xxxvii., 

 xxxviii. 



Loreal entering the eye. x. xi. xv. 



Loreals two, xxii. 



Loreals three, xviii. 



Maxillary teeth equal, i to v.. (20)., 



vi. (10)., xii. (40).. xiii. xx.. xxi to 



xxiii. 

 Maxillary teeth enlarged in front, 



vii to ix. 

 Maxillary teeth enlarged behind, x., 



xi., xiv.. XV to xvii., xviii., xix., 



xxiv to xxvii., xxviii. 

 Maxillary teeth fanged behind, xxix 



to xxxi.. xxxii., xxxiii., xxxiv. 

 Maxillary teeth fanged in front, 



xxxv., xxxvi.. xxxvii., xxxviii. 



Colombo, January 23, 1906. 



Praiocular absent, ii., v. 



Pra30culars two, xxiv., xxvi., xxxii.. 



xxxiii. 

 Praeoculars three, xxix. 

 I'rfeoculars variable (1 or 2).. x., xxx. 



Pupil horizontal, xxxii., xxxiii. 

 Pupil vertical, vii to ix., x., xi.. xxix. 

 to xxxi. 



Rostralf large, xiv., xv to xpii. 

 Rostral produced., xxxii.. xxxiii. 



Scales in 13 rows, x., xxiii., xxxv. 

 Scales in 15 rows, iv., v., xi., xiii., xv.. 



xvi., xvii., xxi., xxii., xxxii., 



xx.Kiii., xxxvi., xxxvii. 

 Scales in 17 rows, i., ii., iii., vi., vii., 



viii., xii., xiv. xviii., xxxiv. 

 Scales in 19 rows, ix., xxiv.. xxv.. 



xxvi , xxviii., xxix. 

 Scales in 19 or 21 rows, xxx. 

 Scales in 21 or 2S rows, xix. 

 Scales in 23 to 27 rows, xx., xxvii., 



xxxviii. 

 Scales in 25 to 29 rows, xxxi. 

 Scales keeled, vi., ix., xxiv., xxv.. 



xxvi., xxvii., xxviii. 

 Scales keeled in posterior part of 



body only. ii.. iv., v., xviii. J 



Subcaudal shields in single row, i to 



iv.. vi., ix. 

 Subocular present, xviii., xix., xxxii., 



xxxiii. 



Ventral shields keeled laterally x., xi., 



xxi., xxiii., xxxiv. 

 Ventral shields with dark spots at 

 the sides, xii., xxv., xxx., xxxiv. 

 Ventral shields with dark spots along 



sides and middle, xv., xvi. 

 Vertebral scales enlarged, xxi to 



xxiii., XXX., xxxii.. xxxiii., xxxvi.. 



xxxvii. 



A. WILLEY. 



* Upper labials or shields l;)ordeiinfr the upper lip. 



f The rostral shield covers the front of the snont. 



J In the yo\mg rat-snnko the keeling of the scales may be nljsenl. 



