252 Dr. James Waterston on 



Genus TRINOTON Nitzsch. 

 Trinotum anserinum Fab. 



Pediculus anserinus Fabricius. Syst. Antl., p. 345 

 (1805). 



(a) $. Barnacle Goose. Advent Bay (J. D. Brown leg.). 



26. vi. 1921. 

 (6) $. Pink Footed Goose. Sassen Bay (G. Binney 



leg.), 17. vii. 1921. 

 (c) (^. Grey Phalarope. Liefde Bay (T. G. Longstaii 



leg.), 8. vii. 1921. 



(The Trinolon is of course a straggler on the last host.) 

 T. anserinum occurs commonly on various Palaearctic 

 Geese, and, it is said, on members of the Genus Cygnus also. 



II. ISCHNOCERA. 



Family PHILOPTEEIDAE Burmeister. 



Genus PHILOPTERUS Nitzsch. 



Philopterus corvi Linn. 



Pediculus corvi Linne. Syst. Nat., x, p. 612 (1758). 

 3 imm. Head of Hooded CroAv. Norway, Troms0 (H. L. 

 Powell leg.), 9. vi. 1921. 



Philopterus fusiformis Denny. 



Docophorus fusiforniis Denny. Mon. Anopl. Brit., p. 84, 

 PI. 1, fig. 2 (1842). 



(a) 2 ?. Bear Island (T. G. LongstafE leg.), 16. vi. 1921. 

 (6) 4 imm. Klaas Billen Bay (C. S. Elton leg.), 15. viii. 

 1921. 



In both cases on Purple Sandpiper on which this parasite 

 regularly occurs. 



Genus DEGEERIELLA Neumann. 

 Degeeriella zonaria Nitzsch. 



Nirmiis zonarius Nitzsch, in Giebel Zeit. f. ges. Nat., 

 xxviii, p. 374 (1866). 



(a) (J. Bear Island (T. G. Longstaff leg.). 



(b) 4 ^, 2 ?. Klaas Billen Bay (C. S. Elton leg.), 15. viii. 



1921. 



In both cases from Purple Sandpiper. 



