Mr Shipley, On a new species of Bothriocephalus. 213 



Description op Plate III, illustrating Mr A. E. Shipley's paper 

 on a new species op Bothriocephalus. 



Explanation of Lettering. 



c.b. = cirrus-bulb. s^?7i. = sphincter muscle of vagina. 



l.m. = longitudinal muscles. te. = testis. 



oot. =ootype. tit. = uterus. 



ov. =ova. ut.s. = uterus-sac. 



ovy. = ovary. v. = vagina. 



p. = penis. v.d. = vas deferens. 



sh.g. = shell-gland. y.g. = yolk-glands. 



1. B. histiophorus, showing the head, the shape of the proglottides 

 in different parts of the body. 



2. A transverse section through a ripe proglottis, showing the 

 eggs issuing from the uterus-sac. 



3. A longitudinal vertical section, showing the openings of the 

 penis and vagina. 



4. A longitudinal horizontal section, showing the irregular rela- 

 tions of the uterus-sac to the cirrus-bulb. 



5. A diagram to show the arrangement of the reproductive organs 

 in a ripe proglottis. The yolk-glands are omitted on the right side, 

 and the testes on the left. 



16—2 



