6d Canadian Arctic Expedition, 191S-18 



Philopterus pustulosus Nitzsch. 

 In Giebel, Zeit. f. ges. Nat., XXVIII, 1866, p. 363. 



Two mature males and one female and numerous immature specimens 

 of both sexes from a Parasitic Jaeger, Stercorarius (Lestris) parasiticus (Linn.), 

 taken at Camden bay, Alaska, in June, 1914. 



Recorded by various European writers from the same host. 



Philopterus subflavescens Geoffroy. 



Hist. Abr. Ins., II, 1762, p. 599. 



Numerous specimens, males and females, from Snow Bunting, Plectrophenax 

 (Emberiza) mt)aHs(Linn.),"taken at Demarcation point, Alaska, in May, 1914, and 

 at Bernard harbour. Northwest Territories, in June, 1916; from Lapland Long- 

 spur, Calcariuslapponicus (Linn.), taken at Demarcation point, Alaska, in May, 

 1914; and from Gambel's Sparrow, Zonotrichia leucophrys gambeli (Nuttall), 

 taken at Demarcation point, Alaska in May 1914. The latter form is somewhat 

 smaller than those from the other two hosts. 



Recorded by European and American writers (P. communis) from many 

 species of passerine birds. 



Philopterus sp. 



One immature female from Baird's Sandpiper, Pisobia (Actodromas) bairdi 

 (Coues), taken at Bernard Harbour, Northwest Territories, in June, 1916. 



The above specimen is too immature for final specific, identification. It 

 may be Philopterus fusif&rmis Denny, recorded by different writers from various 

 Sandpipers. 



Philopterus sp. 



One specimen too immature for specific identification, from a Horned Lark, 

 Otocoris alpestris (Linn.), taken at Bernard harbour. Northwest Territories, in 

 June, 1915. 



Genus Degeeriella. 



Degeeriella complexiva Kell & Chap., 

 New Mallophaga III, 1899, p. 75, PI. VI, f. 3. 



Two mature males and one immature specimen from Baird's Sandpiper, 

 Pisobia (Actodromas) bairdi (Coues), taken at Bernard harbour. Northwest 

 Territories, in June, 1916. 



Recorded by Kellogg and Kuwana from Tringa canutus, from Alaska and 

 by Kellogg and Chapman from Tringa (Arquatella) couesi from Alaska. 



Degeeriella vulgata Kellogg. 



New Mallophaga II, 1896, p. 496, PI. LXVII, f. 3. 



One female of this common parasite of Passeres taken from a Gambel's 

 Sparrow, Zonotrichialeucophrys gambeli (Nuttall), at Demarcation point, Alaska, 

 in May. 1914. 



