ON A HERMAPHRODITE SPECIMEN OF AMPHIOXUS. 



507 



is full of eggs (see Figs. 1 and 2). The relation of the pouches on the right 

 side to those on the left appears (as may be seen from Fig. 2) to be nor- 

 mal. The smaller pouches have been reduced somewhat in size from 

 the loss of sperm referred to above. A few other rudimentary micro- 

 scopic pouches are present in the posterior region of the body. 



Fig. 3. . Fig. 4. 



Blv 



Lr 



Spp. 



Fig. 5. 

 Fig. 3. — Transverse section through a hermaphrodite specimen of Amphioxus lanceolatus 



showing gonadial pouches with sperm or ova and the anterior end of the abnormal 



liver. Ova are present in one pouch only. 



Sp.p. Gonadial pouches filled with sperm. v 



Lr. Anterior prolongation of liver. 

 Fig. 4. — Transverse section of liver at the level of the sixth right gonadial pouch (semi- 

 diagrammatic). 



Bl.v. Blood vessel in ccelomic space surrounding the liver. 



C. Cavity of liver. 



Fig. 5. — Transverse section of liver at the level of the thirteenth right gonadial pouch 



(semi-diagrammatic). 



In transverse sections the gonadial pouch bearing eggs is seen to have 

 the primary and secondary cavities normally shown by the female 



