NEW MALLOPHAGA. 499 



Var. amblys Kellogg. Males, females, and young from 

 the Bald Eagle, Halicsetus leucocephalus (Lawrence, 

 Kansas). Male, body, length 1.56 mm., width .60 mm. ; 

 head, length .47 mm., width .46 mm. Female, body,, 

 length 2 mm., width .75 mm.; head, length .52 mm., 

 width .53 mm. Characters of the species as described 

 by Piaget (Supplement, 1885, p. 18, pi. ii, fig. 7), but 

 with head not longer than wide, eyes with a hair, pro- 

 thorax with a long hair in each posterior angle, metatho- 

 rax with a spine in each lateral angle and six long hairs 

 on each lateral fourth of the posterior margin. 



Nirmus fuscus Nitzsch. (Plate lxvii, fig. 7.) 



Zeitschr. f . ges. Naturwiss. (ed. Giebel) 1861, vol. xvii, pp. 523-525. 

 Nirmus fuscus N., Denny, Monograph. Auoplur. Brit., 1842, p. 118, 

 pi. ix, fig. 8; Giebel, Insecta Epizoa, 1874, p. 123, pi. viii, fig. 2- T 

 Piaget, Les Pediculines, 1880, p. 130, pi. x, fig. 9. 



Specimens of a large variety of this Nirmus of the 

 Eagles and Hawks from Swainson's Hawk, Buteo szuaiii- 

 soni; from the Marsh Hawk, Circus kudsonius; and from 

 the American Roughlegged Hawk, Archibuteo lagopus 

 sancti-johannis — all from Lawrence, Kansas. The Amer- 

 ican form of fuscus (if it be not a new species, indeed) 

 differs markedly from the European type or any of its 

 rather many varieties by being much larger, my speci- 

 mens being fully one-third larger than the fuscus speci- 

 mens taken from Buteo vulgaris by Nitzsch and Piaget. 

 If the various species of Giebel, fuscus, stenoriiynchus and 

 leucopleurus (Insecta Epizoa, pp. 124, 129), be only 

 varieties of fuscus as Piaget believes (Les Pediculines, 

 p. 131), then fuscus has been taken from Buteo vulgaris, 

 Milvus cet alius, Falco b radix dactyl us, Par us av rule us! ', 

 A qui la mevia, Circus ruftts, Milvus ictiuus, Ardea 

 gularis! (Piaget), Archibuteo lagopus, Circus cyaneus, 

 Circus ceruginosus and Milvus regatis. If in addition 



