Cotylogaster occidcntalis n. sp. 



623 



Explanation of Figures. 



All the drawings (Figs. 15 and 16 excepted) were made with 

 the aid of an Abbe's camera from specimens of Cotylogaster occidentalis. 



Abbreviations used: 



ac acetabulam 



C. f caudal foramen 



d. C dorsal cone 



ex. t excretory tubule 



ex. V excretory vesicle 



g.C gland cell 



g.p genital pore 



in intestine 



L. C Laueer's canal 



m mouth 



m. marginal sense organs 



n nucleus 



ova 



OV ovary 



ov'dH oviduct 



p. gl prostate gland 



ph pbarynx 



pph prepharynx 



r.s.ut receptaculum seminis ute- 



rinum 

 s.gl shell gland 

 S.p sense papilla 

 S. V seminal vesicle 

 tes testis 

 v.d vas deferens 

 vit. d vitelline duct 

 vit. gl vitelline gland 

 ut Uterus 



Plate 3 2. 



Fig. 1. Lateral view of an entire alcoholic specimen in wliicli the 

 anterior portion is retracted. 17 : 1. 



Fig. 2. Anterior portion of a similar specimen in which the 

 anterior portion is fuUy protruded. 17:1. 



Fig. 3. Anterior portion of another specimen in lateral view. 17:1. 



Fig. 4. Same specimen in ventral view. 17:1. 



Fig. 5. Oblique dorsal view of posterior portion of a specimen. 

 17 : 1. 



Fig. 6. View of tip of dorsal lobe of oral disk as seen in entire 

 preparation showing sensory (?) papilla. 250 : 1. 



Fig. 7. Median sagittal section of specimen from which Figs. 3 

 and 4 were drawn. 22 : 1. 



Zool. Jahrb. XV. Abth. f. Syst. ^j 



