1. 2 2>/2 scales between L.I. and ventrals. 



4V.2 



a. L. tr. I . Two anterior transverse and a poste- 



3Vi 

 rior longitudinal band P. lateristriga p. 179. 



3V 2 



b. L. tr. i . A transverse bar across nape, an 



4V~2 



anterior longitudinal band and 5 spots on 



each side P. everetti p. 180. 



2. 3 3'/2 scales between L.I. and ventrals. 



a. 6 transverse bands, the first through eye. 



5>/ 2 scales between L.I. and dorsal P. hexazona p. 181. 



b. 5 transverse bands on body only. 5'/ 2 (6) 



scales between lateral line and dorsal ..../*. pentazona p. 182. 



c. 4 transverse bands on body only; 4 1 /2 sca l es 



between L. 1. and dorsal P. tetrazona p. 183. 



(). With longitudinal bands ; 3 4 scales between L.I. 



and ventrals P. fasciatus p. 184. 



(c). No transverse bands, a single lateral band may 



be present, there may be spots. 



a. Height of caudal peduncle 2'/ 2 times in head; 



iV 2 times in its length; eye 5 P. tawarensis p. 185. 



b. Height of caudal peduncle 2 times in head, 



more than i'/ 2 times in its length; eye 4.6 5. P. microps p. 186. 



c. Height of caudal peduncle I'/g 2 times in 

 head, equal to its own length or */s shorter ; 



eye 3.3 4.5 P. binotatus p. 186. 



?. 1 4 1 8 scales round caudal peduncle. 



(a). Height i 3 / 4 in length P. platysoma p. 189. 



(b). Height more than 2 in length. 



1. L.I. 23 P. anchisporus p. 190. 



2. L. 1. 2734. 



a. 4 lateral black blotches P. elongatus p. 191. 



b. Without lateral blotches. 

 a. Anal rays 3.5. 



a). Caudal peduncle surrounded by 14 

 scales. 



6_ 



a. L. tr. i. Seven blackish longitudinal 



4 

 streaks on the body P. strigatus p. 192. 



SVi-6 



b. L.tr. i . No longitudinal streaks. P. huguenini p. 193. 



^S^ 

 If). Caudal peduncle surrounded by 16 



scales. 



