PLATE VIII. 



Fig. 1. Fundulus keleroclitus Linn. ; Gill. Oviduct extended down upon the anal fin. 



Fig. 2. Jenynsia lineata Jen. ; Gth. Male showing the stays from the vertebra: to the base of 



the anal, the air bladder, testes, ureters, and the tube down upon the anal. 

 Fi"'. 3. Jenynsia lineata. A young male, with half grown anal tube, resembling the female of 

 Fundulus heteroclitus. 



Xiphophorns Helleri Ileckel. Male with aual stiiys exposed. 



Gamhusia HoWrookii (Ag.) Grd. ; Blkr. 



Gamliusia punctata Poey. 



Gamhusia puncticulata Poey. 



Heterandria formosa Ag. 



Pseudoxiphophorus Hmaculatus Heck. ; Blkr. 



Pacilia vittata Guich. 



Pcscilia vivipara Bl. Schn. 



Mol/ienisia lali pinna Les. 



Girardinus metallicus Poey. 



Glaridodon uninolalus Poey ; Garm. 



Glaridndon janitarius Hens. ; Garni. 



Cnesterodon decemmaciilalus Jen. ; Garm. 



Cnesterodon scalpridens Garm. 



