122 Book-lice and Bark-lice; Biting Bird-lice 
Mallophaga, has been found only on the guinea-pig. Washing the body of 
the infested animal with kerosene emulsion (see p. 190) is probably the 
most effective remedy for biting lice. 
Of the nearly three hundred species of Mallophaga which I have recorded 
(Proc. Nat. Mus., v. 22, 1899, PP- 39-100) from wild North American birds, 
mention may be made of the largest, Lcemobothnum loomis, taken from the 
Canada goose; of Docophorus communis (Fig. 152), the most abundant and 
widely distributed parasite of perching and song birds; of the pretty Nirmus 
jelix (Fig. 153), with its clean white body and sharply marked black spots; 
of the fierce-looking Lipeurus jerox , found on albatrosses; and of Ancistrona 
gigas (Fig. 154 ), found on fulmars, the broadest of the Mallophaga. 
As there are nearly one thousand different species of North American 
birds, and Mallophaga have been taken from but two hundred and fifty of 
them, it is obvious that the collector and student of these parasites has a 
profitable field open to him. 
