270 
y. H. tunisiensis. —In Bufo mauritanicus . (i) 
Vermicule form. The two limbs of the vermicule 
are equal ; the vermicule is encysted ; at one end of 
the cyst is a deep staining mass. According to Billet 
there is a second cyst included in the first. This 
second cyst shows stippling with Romanowsky, but the 
red cell is not hypertrophied, (ii) Elongated halter- 
form, 18yLt by 4-5 fi. Parasites are especially abundant 
in the liver. 
/ 
lr 
c 
/ 
Fig. 84. (1) Hg. theileri ; (2) Hg. neireti 
Other species are H. encapsulata in R. tigrina , and 
R. limnocharis in India. H. tritonis in Triton cristatus ; 
H. clamatae and H. castebianae in frogs in U.S.A., 
and H. riedyi in a Californian salamander (. Batrachoseps 
attenuatus). 
Haemogregarines in Saurians 
1. H . lacertarum (= Karyolysus lacertarum) 
(Fig. 88).—Found in the blood of Lacerta agilis , L. 
muralis , and L. ocellata . 
The parasite has a more compact form than some 
of the other haemogregarines. They exert a marked 
action on the red cells, which become much enlarged 
