Family
PULICIDE. (Fleas.) I am indebted to my friend M.r Rothschild for identifying two species of flea which we have found living on the grouse. 3. Ceratophyllus gallinule (Dale). This is a well-known bird-flea (Fig. 4), and has been found in the nest of the Hawfinch, the Dipper, the Blackbird, the Moorhen, and others. Since it is known that a certain dog-flea is the second host of one of the cestodes of the dog, it seems possible that one of these fleas may be the intermediate host of one of the chief worms which infest the alimentary canal of the grouse. We have, however, not succeeded in finding the cysts, neither have we found specimens of the flea in the crop of the bird. Professor Minchin has recently found larval forms ১০০০