Bull. U. vS. B. F., 191;,. 



Plate XVI. 



Fig I —Dissection of male Gambuna. showins testis and mechanism controlline anal fin. x ;..': .4F modilied anal Im: 

 HS. modfied haemal spines; /. intestine; M. muscle controlling anal fin; T. testis; VP. ventral process of abdommal 



Fig. 2.— Skeletal parts of mechanism controlline modified anal fm; APR. anal fin ra^-s; HS, haemal spines; IH. inter- 



hsmals; VP. ventral process of abdominal vertebra. 

 Fig. 3. — Distal portion of modified anal fin greatly enlarged. 



Fig. 4. 

 Fig. 5 

 Fig. 6, 

 Fig. 7 

 Fig 



Testis. X 9. 

 Spermataphore. x 385. 

 Spermatazoon, x 3,000. 

 ■Ovary, x 4. 

 — Dissection of female Gambuua. showing ovar^- distended with advanced embryos, x 3.6. 



