406 



PARASITISM A\'D DISEASE l\ RITE ED GROUSE 



INFESTATION OF THE GIZZARD WORM (Cheilospirura spinosa) UNDER GIZZARD 

 LINING — A RELATIVELY HARMLESS PARASITE OF GROUSE 



A NOHMM. I'H()\ INTRICl l.US IKU.IITl COMPARED WITH ONE INFECTED WITH THE 

 STOM \< u woioi I Dispharyitx spiralis) — A RELAIIV i:i.> HARMFUL PARASITE 



OF GROUSE 



