of Pceciliid Fishes, /j07 



3. Cynolebias maculatus. 



Cynolehias tnactdafus, Steind. Denkschr. Akad. Wien, xllv. 1882, p. 10, 

 pi. V. fig. 2 ; Garman, Mem. Mus. Comp. Zool. xix. 1897, p. 145. 



Depth of body 3 in tlie lengthy length of head 31 to 3|, 

 Caudal peduncle longer than deep. Diameter of eye nearly 

 4 in the length of head. 28 to 30 scales in a longitudinal 

 series. Dorsal 17-19; origin nearly above that of anal, 

 about equidistant from eye and base of caudal ; posterior 

 rays longest, | or 4 length of head. Anal 22-26 ; middle 

 rays as long as longest of dorsal. Pectoral | leii^^th of head, 

 extending to anterior part or middle of pelvics, which reach 

 beyond origin of anal. Olivaceous; a dark stripe below 

 eye ; vertically expanded violet spots on body and vertical 

 fins. 



La Plata. 



1-3. 55-60 mm. La Plata. Doria. 



4. 47 mm. „ Arnold, 



4. Cynolebias porosus. 



Cynolebias porosus, Steind. Sitzungsb. Akad. Wien, Ixxiv. 1876, p. 173, 

 pi. X. tig. 3; Garman, Mem. Mus. Comp. Zool. xi\. 1897, p. 143. 



Depth of body nearly equal to length of head, about 3 in 

 the length of fish. Caudal peduncle nearly as long as deep. 

 Diameter of eye 5 in length of head. 40 scales in a longi- 

 tudinal series. Dorsal 18 ; origin equidistant from prae- 

 operculum and base of caudal ; posterior rays longest, 3 

 length of head. Anal 20 ; origin equidistant from anterior 

 margin of eye and base of caudal ; posterior rays longest, 

 nearly as long as head. Pectoral i length of head, ex. 

 tending beyond origin of anal ; pelvics extending beyond 

 origin of anal. Brownish ; fins greyish. 



Pernambuco. 



Total length 75 mm, 



5. Cynolebias robustus. 



Cynolebias robustus, Gtinth. Ann. & Mag. Nat. Hist. (5) ii. 1883, p. 140. 



Depth of body 2? in the length, length of head 32. 

 Caudal peduncle deeper than long. Diameter of eye 5^ in 

 the length of head. 33 scales in a longitudinal series. 

 Dorsal 22; origin equidistant from middle of eye and base 

 of caudal ; posterior rays longest, § length of head. Anal 



