PARASITIC WORM? IN DOMESTICATED ANIMALS 277 



autopsies of those that may be killed for the purpose. 

 In Tasmania a reward of 1/- per head is paid by the 

 Government or by the Angling Associations and both eggs 

 and nests are destroyed. 



Dr. Francis Ward estimates that a cormorant which 

 weighs 6 to 8 lbs. consumes at least lo lbs. of fish per 

 diem and as an experiment he gave a captured cormorant 

 as many herrings 7" long as he could swallow. He put 

 away 27 at one sitting! 



Some Common Parasitic Worms Occurring in the 

 Domesticated Animals in South Africa, 



By E. M. Robinson. 



Two common nematode worms occurring in the 

 oesophagus of the ox, sheep and goat are Gongylonema 

 Scntatum- and G. Verrucosum. These are long thread 

 like filariae threaded under the mucous membrane and 

 may occur in the pharynx, rumen and reticulum. 



Spiroptera Megastoma is a small white nematode 

 occurring in the stomach tumours of the fundus of the 

 horse's stomach. 



Spiroptera Microstoma closely resembles S. Megastoma, 

 but is found in thousands in the stomach contents of the 

 horse and never in the tumours of the stomach wall. 



Amphistomum Conicum is a trematode worm founQ in 

 clusters in the rumen, usually close to the entrance to 

 the reticulum, in cattle, sheep and goats. It is about the 

 size of a grain of wheat or a little larger, and is pink in 

 colour. The intermediate stages in its life history are 

 probably passed in a fresh . water snail. A conicum is 

 found in the reticulum as well, but never anywhere else, 

 though in the buffalo a species is found in the coecum. 



