PAEETEOPLUS. 



505 



Two species : — 



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



o 7 5-6 



6i W 



D. XVI-XVIII 17-18; A. VII-IX 13-11; 



Sc. 32-34 



4-5 

 14-15 



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



2. P. polyaitis, Blkr., p. 50C. 



1. PARETROPLUS DAMTI. 



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



Fie. 350. 



Pdreiroplas damii. 

 Imerina. ?. 



as eye in adult ; eye i\ 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 

 1 1-14 ; 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. 111. 



2 h 



