210 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 15 



FOR ALL FIGURES 



1, marginal eyes; 2, frontal eyes; 3, cerebral eyes; 4, uteri; 

 5, pharynx; 6, main intestine; 7, Lang's vesicle; 8, duct of Lang's 

 vesicle; 9, oviduct entrance; 10, vagina; 11, cement glands; 12, 

 female antrum; 13, female gonopore; 14, male gonopore ; 15, male 

 antrum; 16, penis papilla; 17, ejaculatory duct; 18, prostatic vesicle ; 

 19, sperm duct; 20, tentacular eyes; 21, spermiducal bulb; 22, 

 eosinophilous part of prostatic vesicle; 23, cyanophilous part of 

 prostatic vesicle; 24, tentacle; 25, seminal vesicle; 26, cirrus sac; 

 27, armature of cirrus sac; 28, bulbous antrum; 29, copulatory 

 bursa; 30, brain; 31, penis stylet; 32, penis sheath; 33, cirrus 

 papilla; 34, prostatic ducts. 





