62 
It is obvious from the above description that we have 
to deal here with a Protozoon parasite, most probably a 
Sporozoon form. Possibly it is one of the Gregarinida, 
but at present I am unable to determine the genus. 
Explanation of Plate D. 
Fig. 1.—A small portion of the gut of the second 
specimen. Natural size. 
Fig. 2.—Part of a transverse section of the wall of 
the gut of the first specimen. 
x 15 diameters. / internal, # external, 
surface. 
Fig. 3.—Part of the same transverse section; x 390 
diameters. Per. peritoneum; J//, longi- 
tudinal muscle layer; dc, circular muscle 
layer; S.muc, sub-mucosa; Cc, capsule of 
a cyst; Sp, spore contents of the cyst. 
Fig. 4.Several spores from the first specimen 
x 2,500 diameters. 
