PAEETEOPLUS. 



505 



Two species : — 



D. XVIII-XX 11-14; A. IX-X 9-11 ; So. 35- 

 5-6 



37 



17 



D. XVI-XVIII 17-18; A. VIl-IX 13-U; 



Sc. 32-34 



4-5 

 14-15 



1. P. damii, Blkr., p. 505. 



2. P. polyactis, Blkr., p. 506. 



1. PARETROPLUS DAMII. 

 Bleek. t. c. p. 313, and Poiss. Madag. p. 13, pi. iv. fig. 3 (1875) ; Suuv. op. cit. 

 p. 446, pi. xlvi. fig. 1 ; Bouleng. 1. c. ; Pellegr. 1. c. 



Depth of body hardly twice in total length, length of head 3 times. 

 Head twice as long as broad ; snout strongly compressed, twice as long 



Yis. 350. 





.^ 



Paretroplus damn 

 Imerina. |. 



as eye in adult ; eye 4| times in length of head, 1-^ times in interorbital 

 width ; mouth extending to between nostril and eye ; four series of 

 scales on the cheek, depth of scaly part equal to diameter of eye. Gill- 

 rakers short, 12 on lower part of anterior arch. Dorsal XVIII-XX 

 11-14; last spine longest, f length of head, shorter than soft rays. 

 Anal IX-X 9-11 ; last spine slightly longer than longest dorsal. 

 Pectoral not quite f length of head. Ventral reaching anal. Caudal 

 feebly emarginate. Caudal peduncle twice as deep as long. Scales 

 VOL. III. 2 L 



