cuneatus (chicken, peafowl; bursa of Fabricius; U. S.), 22 to 27 by 
13 to 16; P. ovatus (chicken; bursa of Fabricius and oviduct), 22 to 24 
by 13; P. intercalandus (chicken; oviduct and body cavity), 29 by 15; 
P. pellucidus (chicken; bursa of Fabricius and oviduct), 27 to 29 by 
11 to 13; P. japonicus (chicken; probably bursa of Fabricius), 24 by 12; 
Strigea gracilis (duck; intestine), 110 by 67; Cyathocotyle orientalis 
(duck; ceca and small intestine), 100 by 65. 
Fig. 49. Catatropis verrucosa. Eggs, x 215. From Neumann, 1909, after Dujardin, 
Some fluke eggs are not of the conventional shape given above. 
The eggs of Catatropis verrucosa (Fig. 49) are elliptical, 23 microns 
long by 11 microns wide, with a filament 160 microns long at each 
pole; this fluke occurs in the cecum and rectum of the goose. The 
F'ig. 50. Choanotaenia infundibulum. Eggs, x 425. From Guberlet, 1916. 
eggs of Bilharziella polonica are elongate anteriorly and have a small 
terminal spine posteriorly; this fluke occurs in the blood vessels of 
the duck. 
There are many species of tapeworms which occur in the intestines 
of poultry. A very small number of these belong to the group of 
50 
