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TETRACOTYLE SOGDIANA— A NEW TREMATODE 
PARASITE OF THE FISH, SCHIZOTHORAX INTER- 
MEDIUS, WITH A DESCRIPTION OF ADHESIVE 
PERITONITIS PRODUCED BY THE PARASITE IN 
ITS HOST. 
By E. N. PAVLOVSKY, M.D., Sc.D. 
Professor of Zoology. 
AND 
N. N. ANITCHKOV, M.D. 
Professor of General Pathology. 
(From, the Military Academy of Medicine , Petrograd.) 
(With Plate XXV.) 
CONTENTS. 
PAGE 
Introduction. 
Structure of the Parasite .... 
Peritoneum as a site of localisation of parasite 
Structure of the cyst-walls .... 
Development of the cyst .... 
References .... 
309 
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314 
Introduction. 
In the summer of 1908 one of us (E. N. P.), whilst collecting material in 
the River Zeravshan in the vicinity of Samarkand (Turkestan), came across 
a case of adhesive peritonitis in a local fish, Schizothorax intermedins. The 
abdominal wall of this fish, with a part of the viscera adhering to it, were 
dissected out and placed in 70 per cent, alcohol where they remained untouched 
till 1919 when we proceeded to their examination. The results of our investiga¬ 
tion are described in this paper. An examination of the excised parts shows 
a compact accumulation of tissue on the ventral side of the intestinal coils, 
in the form of a flat patch from which a series of fine strands run to the black 
peritoneal covering of the lower body-wall. The patch which shows irregular 
edges is coloured black and is covered with yellowish spots. 
Structure of the Parasite. 
For examination, small pieces were cut out from the edge of the patch 
and either (1) embedded in celloidin or paraffin, cut and stained with iron 
haematoxylin, eosin, Weigert’s haematoxylin, Van Gieson’s and Giemsa’s 
stains, or (2) teased and mounted in Canada balsam. 
