Mr Shipley , On a new species of Bothriocephalus. 213 
Description of Plate III, illustrating Mr A. E. Shipley’s paper 
on a new species of Bothriocephalus. 
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. 
Explanation of Lettering. 
c.b. = cirrus-bulb. 
l.m. = longitudinal muscles. 
oot. = ootype. 
ov. =ova. 
ovy. = ovary. 
p. = penis. 
sh.g. = shell-gland. 
sph. = sphincter muscle of vagina. 
te. = testis. 
ut. = uterus. 
ut.s. — uterus-sac. 
v. = vagina. 
v.d. =vas deferens. 
y.g. = yolk-glands. 
16—2 
