MALLOPHAGA FROM BIRDS 483 



Genus Physostomum. 



PHYSOSTOMUM ANGULATUM Kellogg. 



Kellogg, New Mallophaga, ir, p. 515, pi. lxx, fig. 5, 1896. — Kellogg, 

 List of Mallophaga, p. 69, 1899. 



One female from Alyiarchus rnagnirostris from Albemarle ; also 

 a young, pi^obably this species, from Detidroica aureola. This 

 Physostomum is unmistakably identical with the species angulatum^ 

 described by Kellogg from Tyraiinus tyratzmis from Kansas. 



Genus Ancistrona. 



ANCISTRONA GIGAS Piaget. 



PiAGET, Les Pediculines, Supplement, p. 117, pi. xii, fig. 8, 1885. — Kel- 

 logg, List of Mallophaga, p. 71, 1899. 



Two immature specimens from an undetermined host, the bird skin 

 having been lost or thrown away before determination. Previously 

 recorded by Kellogg from Fuhnarus glacialis glupischka and F. g. 

 rodgersz'i., and by Kellogg and Chapman from Puffinus gavia and P. 

 griseus^ all from Monterey Bay, California. Described by Piaget 

 from Procellaria glacialis. 



Genus Colpocephalum. 



COLPOCEPHALUM MILLERI sp. nov. 



(PI. XXX, fig. 6.) 



Numerous specimens, male and female, from several specimens of 

 Anous stolidus from Clipperton Island ; two females from Butorides 

 plumbeus from Narboro ; two females and a male from two speci- 

 mens of Camarhynchus ajffinis from Albemarle ; one male each from 

 two specimens of Geospiza fuliginosa from Albemarle and a male 

 from Geospiza fortis from Albemarle. A distinctly marked species 

 like C. maurian N. described from terns, gulls, and other maritime 

 birds. 



Fetnale. — Body, length 1.S3 mm., width .(i^) mm. ; elongate ; golden 

 brown with chestnut brown lateral margins, ocular blotches conspicu- 

 ous. Head, length .35 mm., width .56 mm. ; front broadly rounded 

 with eleven hairs on each side between middle of front and ocular 

 emargination ; of those on the true front the first and fourth larger than 

 the others and of those on the side one very long; ocular emargination 

 deep, narrow; eyes undivided but with a faint medial emargination; 

 ocular fringe prominent ; of the hairs on temporal margin three are 

 long ; occipital margin flatly concave, bare ; color golden brown with 



