I'KOF. W. A. IIASWELL ON AUSTIJALASIAN POLYCLADS. 185 



Plate 36. 



Fig. 1. Dipliisolciihi jiiltnstoni. General view of tlu' reproductive ducts from tlie ventral aspect. 



Yasa deferentia and ejaculatory duct sliaded ; ootype dotted, 

 y. „ ,, Transverse section passing through the point of union of the ducts of 



the receptacula seniinis. 



3. Leptophuui aiist raits. General view of the reproductive ducts from the ventral aspect. 



4. „ ,, Diagrammatic lateral view of the reproductive apparatus. Epithelia 



dotted ; muscular layers shaded. 

 ,5. ,, ,, Eyes. The two oval bodies are the anterior appendages of the brain, 



(i & 7. Echinophina cclcrrima. Spines of the penis, x 500. 



Plate 37. 



Fig. 1. Eclihiophiiia celerrhiia. Brain and eyes; from stained and mounted specimen. 



2. ,. ,, General view of the reproductive apparatus, from the ventral aspect. 



3. ,, „ Transverse section passing through the point of union of the uterine 

 duct with the diverticulum of the ootype. 



4. Enterogonia piyrans. Diagrammatic lateral view of the reproductive apparatus, showing the 



genito-intestinal canal. Epitlielial parts dotted ; muscular layers shaded. 



5. Cestoplana aicstra/is. Outline magnified, to show arrangement of vermilion bands. 

 G. Pseudocei-os cardivdlis. Ventral view of male reproductive ducts. 



7. Prnsthiosfoiiinm uidculat nut. Cerebral eves. 



SECOXU .SERIES.— ZOOLOGY, VOL 1\. 70 



