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NOTE ON THE OCCURRENCE OF TRIAENOPHOR US 
NODULOSUS RUD. IN THE NORFOLK BROADS. 
By A. E. SHIPLEY. 
(1 Figure.) 
A short time ago Professor Minchin of the Lister Institute 
of Preventive Medicine sent me the liver of a Perch, Perea fluviatilis 
Rond, which was infested with cestode cysts. On examination each of 
these proved to contain a single specimen of the larval form of Triaeno- 
phorus nodulosus Rudolphi. The perch was caught in Sutton Broad, 
Norfolk, and, as I know of no record of this tapeworm being found in 
this locality, I have prepared this short note on its occurrence. 
The cysts were spherical or oval, the diameter being about 1—2 mm. 
The cyst-wall was thick and laminated. Within each cyst a larval form 
of T. nodulosus (see Figure) was coiled or tangled up so as to accom¬ 
modate its length (some 8—10 mm.) to its narrow home. Anteriorly the 
characteristic hooks and the two suckers are visible. There was no 
trace of segmentation in the body. 
Triaenopliorus nodulosus Bud. larva x about 12. To the right one of the 
three-pronged hooks more highly magnified. 
