AQA4A MR. R. C. LEWIS ON 
margin. It is possessed of numerous proximal and distal diver- 
ticula. As already mentioned, the egg possesses no pyriform 
body. 
The nervous system has not been worked out, as the specimens 
were fixed in alcohol, but from the sections it appears that the 
condition is like that in C. quadrata von Linstow (20), with a 
single trunk on each side to the outside of and dorsal to the 
two excretory canals, and a ganglionic mass is observed beneath 
the loop formed by the excretory canals in the head. 
Text-figure 1. 
C. zschokket von Janicki. Young already fertilized proglottis in optical section, 
from von Janicki (10), p. 130. 45. 
A.w.Dr., rudiments of female genital ducts ; C.b., cirrus-pouch ; #, excretory vessel ; 
Ha., vudiments of testes ; WV, longitudinal nerve; #.s., receptaculum seminis ; 
Ut.a., rudiments of uterus; V.d., vas deferens ; Vg., vagina. 
Affinities and Contrasts with other Species. 
In describing this species it has already been pointed out that 
of all the species of Cittotenia this one resembles most closely 
C. xschokker von Janicki (10). The chief points of resemblance are 
the possession by both species of a projecting sheath, which is 
Text-figure 2. 
H. (= Vs, [2 N Ch 
Tae 3G, GOR @) 
OD Re GaP aba Bee e ct ra lol = 
} Li i: 
C. zschokkei von Janicki (10). p. 130. Ripe proglottis in optical section. X46. 
Dst., vitelline gland; H., testes; Ks#., ovary ; Ut., uterus ; V.s., vesicula seminalis. 
Other lettering as in text-fig. 1. 
fimbriated, at the posterior border of each segment overlapping 
half the next segment: also the development and position of 
the reproductive organs; the absence of the pyriform body in 
