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PACIFIC SCIENCE, VoL VIII, July, 1954 
Fig. 1. Euplana tropicalis. a. Entire specimen; b, sagittal view of the copulatory complexes from sections. 
1, Cerebral eyes; 2, tentacular eyes; 3, pharynx; 4, mouth; 5, male gonopore; 6, female gonopore; 7, male antrum; 
8, penis sheath; 9, penis pocket; 10, penis papilla; 11, ejaculatory duct; 12, seminal vesicle; 13, horns of seminal 
vesicle or spermiducal bulbs; 14, sperm duct; 15, female antrum; 16, vagina; 17, uteri; 18, entrance of oviduct 
into vagina; 19, Lang’s vesicle. 
