NEW MALLOPHAGA. 525 



Colpocephalum flavescens Nitzsch. (Plate lxxi, tig. 4.) 



Germar's Mug. Entoinol., 181S, vol. iii, p. 298. 

 Colpocephalum flavescens N., Nitzsch (ed. Giebel) Zeitschr. f. ges. 

 Naturwiss, 1861, vol. xvii, p. 522; Burmeister, Handb. d. Ent., 

 1835, vol. ii, p. 438; Denny, Monograph., Auoplur. Brit., 1842, p. 

 206, pi. xviii, fig. 2; Giebel, Insecta Epizoa, 1874, p. 262, pi. xiii, 

 fig. 10; Piaget, Les Pediculines, 18S0, p. 515, pi. xiii, tig. 10. 



Specimens which should probably he referred to this 

 species from two Bald Eagles, Haluvetus leucocephalus, 

 and an American Rough-legged Hawk, Archibuteo lagopus 

 sancti-johannis (Lawrence, Kansas). The male figured 

 by me measures: Body, length, 1.5 mm., width, .6 mm.; 

 head, length .31 mm., width .53 mm. The species may 

 be recognized by the strong distinct blotches and occipital 

 bands and border of the head, and the transversal ab- 

 dominal blotches. 



Colpocephalum subaequale Nitzsch. (Plate lxxii, tig. i.) 



Germar's Mag. Entoinol., 1818, vol. iii, p. 299. 

 Colpocephalum subcequale N., Burmeister, Handb. d. Ent., 1835, vol. 

 ii, p. 438; Giebel, Insecta Epizoa, 1874, p. 265, pi. xiii, figs. 13 and 

 14, Piaget, Les Pediculines, 1880, p. 527. 



Two females from an American Crow, Corvus ameri- 

 canus (Palo Alto, California). I did not find this species 

 represented on several other crows shot at Palo Alto and 

 at Lawrence, Kansas, although all of the individuals were 

 infested by other parasites, such as Docophorus atratus 

 or Menopon mesoleucum. My specimens do not have the 

 dorsal surface of the thoracic segments with scattered 

 long hairs, nor the surface of the abdomen thickly beset 

 with hairs, as Giebel's description (Insecta Epizoa, p. 

 265) records; but neither are these hairs shown in 

 Nitzsch's figure. Nitzsch's specimens were found on 

 Corvus corax and C. frugilegus. My specimens do not 

 have the first two segments of the abdomen especially 

 lengthened as in Rudow's semi ci net um (Zeitschr. f. 



