PLATE VIII. 



Fie-. 1. Fundulus heteroclitus Linn. ; G\\\. Oviduct extended down upon the anal fin. 



Fit'. 2, Jenynsia lineata Jen. ; Gtli. Male showing the stays from the vertebras to the base of 



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

 Fio-. 3. Jenynsia lineata. A young male, with half grown anal tube, resembling the female of 

 Fundulus heteroclitus. 

 Xiphophorus Helleri Heckel. Male with anal stays exposed. 

 Gamhusia Holhrookii (Ag.) Grd. ; Blkr. 

 Gambusia punctata Poey. 

 Gambusia puncticulata Poey. 

 Heterandria formosa Ag. 



Pscudoxiphophorus Irimaculatus Heck. ; Blkr. 

 Pcecilia vittata Guich. 

 Pcecilia vivipara Bl. Schn. 

 Mollienisia hitipinna Les. 

 Girnrdlnns melalliciis Poey. 

 Glaridodon uninotatus Poey ; Garm. 

 Glaridodon januariiis Hens. ; Garm. 

 Cnesterodon decemmactdatus .Jen. ; Garm. 

 Cnesterodon sca/pridens Garm. 



