24 Carl L. Hubbs 



PLATE I 



Figure I. Distal portion of gonopodium of Gambus'ia piincticiilata, from a speci- 

 men 26 mm. long to caudal fin, from Havana, Cuba. The terminal hooks of rays 

 4 and 5 are indicated) by the letters t h. 



Figure 2. Distal portion of the gonopodium of Heterandria fonnosa, from a speci- 

 men 12.5 mm. long to caudal fin, from De Leon Springs, Florida. 



