CYPRINODONT FISHES. 1007 



except that the dorsal origin is said to be a little in advance of 

 that of anal. 



3. PcECiLiA PiCTA, sp. n. (PI. 0. figs. 1, 2, and Text-fig. 173 A.) 



Acaathophacelus melanzonus (part.) Eigenm. Ann. Carnegie 

 Mus. vi. 1909, p. 51; Mem. Carnegie Mus. v. 1912, p. 457, 

 pi. Ixiv. fig. 6. 



5 . Depth of body 3 j to 4 in the length, length of head about 4. 

 Diameter of eye 3| to 4 in length of head, interorbital width 1|-. 



26 to 29 scales in a longitudinal series. Dorsal 6-7, origin above 

 middle or posterior part of anal and equidistant from base of 

 pectoral and base of caudal ; fin small, rounded. Anal 9-10, 

 pointed. Pectoral | length of head ; pelvics reaching vent or 

 origin of anal. Least depth of caudal peduncle about |- length of 

 head. Olivaceous ; sides of body with a dark brown spot on each 

 scale and dai-k brown longitudinal stripes between the series of 

 scales. 



<S . Depth 3 to 3| in the length. Dorsal origin nearl}^ equi- 

 distant from eye and base of caudal ; fin elevated. Least depth'' 

 of caudal peduncle -f to | length of head. Coloration sometimes 

 as in female, but usually there are a few lai'ge dark spots on 

 posterior part of body ; dorsal fiu usually with blackish spots ; 

 often an ocellus on upper part of base of caudal fin. 



Demerara. 



Numerous examples, the females measuring up to 45 mm., 

 the males to 30 mm. in total length, presented in 1872 by F. G. 

 Beckford, Esq. 



A. melanzonus- is based on a male of Lebistes y^eticulatus (type) 

 and several females of P. picta. 



In this species the intromittent organ differs somewhat from that 

 of P. vivipara, but is formed on the same plan (text-fig. 173 A, 0). 



4. POECILIA BRANNERI. 



Pcecilia hranneri Eigenm. Ann. N.Y. Acad. vii. 1894, p. 629. 

 Pcecilia heteristia Regan, Ann. Mag. Nat. Hist. (8) iii. 1909, 

 p. 235. 



2 . Depth of body Sk in the length, length of head 4. Dia- 

 meter of eye 3| in length of head, interorbital width nearly 2. 



27 or 28 scales in a longitudiiial series. Dorsal 6-7 : origin 

 above middle of anal and nearly equidistant from base of pectoral 

 and base of caudal. Anal 8, pointed. Pectoral | length of head ; 

 pelvics extending to origin of anal. Least depth of caudal 

 peduncle | length of head. Olivaceous ; edges of scales darker; 

 some blackish vertical streaks on the side and a blackish spot or 

 vertical bar at base of caudal fin. 



(S . Dorsal origin equidistant from middle of operculum and 

 base of caudal ; two last rays produced into long filaments. 

 Caudal spot larger than in $ ; sometimes a blackish stripe near 

 upper edge of caudal fin. 



67* 



