PLATE IV. 



(« = mandibular, i ^= iatcrmaxiUaiv, ami p = pharyngeal teutli.) 



Anableps nnableps Linne. 



Anableps microlepis Milll. & Tr. 



Giimbusia Holbrookii (Ag.) Grtl. ; Blkr. 



Gambusia punctata Poey. 



Gambiisia episcop! St. 



Gambusia gracilis Heck. ; CJth. 



Heteraiidria formosa Ag. 



Heterandria minor (turm. 



Pcecilia amazonica Garm. 



Gambusia. tridentiger Garni. 



Poiciliu rittata Guii-li. 



Pcecilia domiiiicciisis C. V. 



Pcecilia sphenops C. V. 



Xiphophurus Helleri Hfck. 



