PLATE LIV. 



NIRMUS CAMBRATU8. 



FIG. 1. Nirmws cameralus. f!itzsch. Magnified. Female. A seen 

 from above ; B seen from beneath. 



FIG. 2. Eggs of Nirmus cameratus on the feathers of a young Grouse about three weeks old. A, very slightly 

 magnified, three eggs on one of the wing-covers ; B, magnified about eight times, one egg on a downy plume ; C, very 

 highly magnified to show reticulations. 



Opposite p. 357.] 



