ON CYPRINODONT FISHES. 977 



58. A Revision of the Cjprinodont Fishes of the Subfamily 

 PoeciliinEe. By C. Tate Regan, M.A., F.Z.S. 



[Received October 11, 1913 ; Read November 11, 1913.] 

 (Plates XCIX -CI* and Text-figures 168-173.) 



Ihdex. 



Sysxejviaxic ;^ Page 



Synopsis of Genera 979 



Gamhusia dovii, sp. n. 986 



G. niffropunctata, SY>. n 987 



G. melanosticta, sp. n 987 



G. wrayi, sp. n. ....,.' 988 



G. oUgosticta, sp. n 988 



G, graoilior, sp. n 989 



G. dommicensis, sp. n , , 989 



G. oai/manensis , sp. n , , 990 



Priapichthys, gen. nov , ,. 991 



Priapella, gen. nov. .. ,.,. 992 



Fseudopoecilia, gen. nov, , ,...,•: 995 



Pceeiliopsis, gen. nov ,.,..,...., ,... 996 



P, isthmensis, sp. n , , . . . 997 



Braoliyrhaphis, gen. nov , 99f 



Leptorhaphis, gen, nov, ,, 998 



' Pamphoriolithys, g&O.-'o.ov, , 1003 



Pamplioria, gen, nov.. • , 1003 



Pcpeilia picta, sp. n , . ., 1007 



Mollienisia gracilis, noni. nov 1012 



Limia nigrofasciata, sp. n ,. , 10J5 



£. arnoldi, sp. n ,. 1016 



Jj. ornata,&^^.n. , ,■,•■, 1016 



Xi. oaudofasciata, sp, n , , 1017 



L, heterandria, sp. n, , 1017 



The Poeciliinffi are viviparous Oyprinodonts in which the anal 

 fin of the male is advanced and modified into an intromittent 

 organ. They are American, ranging from Cai'olina to Argentina 

 and from i^rizona to Ecuador ; many of the species live in the 

 sea as well as in fresh water. Most of the species are quit© 

 small, two or three inches long ; the giant of the group, Belonesooc 

 belizanas, attains a length of eight inches. In some forms the 

 males are much smaller than the females, and the adult male of 

 Heterandria for'tnosa, 15 to 20 mm, long, is one of the smallest 

 fishes known; in several species males are rather scarce. 



In Glinther's classification (Cat, Fish. vol. vi.) the Cyprinodonts 

 were divided into Carnjvorse, with the intestine short or but 

 little convoluted and the bones of the lower jaw firmly united, 

 and Limnophagfe, with the intestine long and convoluted and 

 the bones of the lower jaw loosely connected. It is now kjiown 

 that both types occur in two distinct subfamilies, Characodontinsa 

 and Poeciliina^, and there is good evidence that in the latter th© 

 * For explanation of tbe Plates see p, 1018. 



