28 Carl L. Hubbs 



PLATE III 



Figure 4. Distal portion of the gonopoclium of Platypoccilus Diaculaliis. from a 

 specimen 2^ mm. long to caudal fin. The membranous hook is labelled m h. 



Figure 5. Distal portion of the gonopodium of Neopoecilia holacaiithus. from a 

 specimen 34.5 mm. long, from Arroyo, Porto Rico. The prepuce-like hood in this- 

 and the following two figures is indicated at p h. 



