eigenmann: fresh water fishes. 301 



T Platypoecilits iiclsoiii Meek. 



T Poecilia spJieiiops Cuvier & Valenciennes. 



T Melaniris balsauns Meek. 



T Agonostomus niouticola (Bancroft). 



S Cichlasoma istlanmn (Jordan & Snyder). 



T Chonophorus taiasicits (Lichtenstein). 



Near the Isthmus of Tehuantepec, on the Atlantic side, is the basin of 

 the Papaloapam with the following species. In this river the northern 

 element has approached the vanishing point, while the southern element 

 is increasing. Collections were made from tide level to an elevation of 

 about 3500 feet. 



Me GaleicJitliys agiiadiilce Meek. 

 S RJiaindia oaxacce Meek. 

 S Rliamdia brachypfeya (Cope). 

 N Carpiodes nieridionalis (Giinther). 

 S Astyauax mexicamis (Filippi). 

 S Astyauax cenetts (Giinther). 

 S Heinigrammus compressus Meek. 

 N DoFosoiiia aualc Meek. 

 N Dorosoma exile Jordan & Gilbert. 

 N Signalosa mexicana (Giinther). 

 T Cynodouichthys tenuis Meek. 

 T PseudoxipJiophoyus biuiaculatus (Heckel). 

 T Gajnbusia bouita Meek. 

 T Paragambusia uicayagueusis (Giinther). 

 T Belouesox belizanus Kner. 

 T Plafypcccilus maculatus Giinther. 

 T Heteraudria lutzi Meek. 

 T Poecilia splieuops Cuvier & Valenciennes. 

 T Xiphophorus he I ley i Heckel. 

 Me Tylosuy/ts niariuus (Walbaum). 

 Me Menidia lisa Meek. 

 T Agouostomus monticola (Bancroft). 

 Me Ceutropouius mexicamis Bocourt. 

 Me Pomadasys starri Meek. 

 Me Pomadasys touplei Meek. 

 S Cichlasoma salviui (Giinther). 



