Bird = infesting Mallophaga of Japan (III). 



(Genus Li peur us) 



By 



Seinosuke Uchida, Migakushi. 



Wit li 3 figures in text. 



Genus LipeuruS Nitzsch. 



Nitzsch, Germ. Mag. f. Insekt., III, 1818, p. 292 ; Denny, Monogr. 

 Anopl. Brit., 1842, p. 164 ; Giebel, Insekta Epizoa, 1874, p. 206 ; Piaget, 

 Les Pedicuünes, 1880, p. 284; Taschenberg, Die Mallophagen, 1882, p. 

 102 ; Kellogg, Mallophaga, Genera Insectorum, 1908, Fase. 66, p. 36 ; 

 Mjöberg, Arkiv for Zoologi, 1910, Bd. 6, p. 83 (Part.). 



x. Lipettrus densus Kellogg. 



Kellogg, New Mallophaga, I, 1895, p. 114, pl. VII, figs. 1 & 2, (female 

 juv.) ; Kellogg, New Mallophaga III, 1899, p. 28, pl. Ill, fig. 2, (male). 



One male, three females and eight youngs of the species were collected 

 from two skins of Audubon's albatross, Diomedea nigripes, collected in the 

 Bonin Is., 1892, and in Prov. Sagami, March 27, 1884. Further, a young 

 specimen was obtained from a skin of Steller's albatross, Diomedea albatrits, 

 taken in Prov. Awa, Feb. 19, 1888. 



The females on hand do not quite agree with Kellogg's description 

 and figure, probably owing to the fact that the specimen described by him 

 was in the immature state. 



Adult female:- — Very similar to the male except in having much more 

 slender but shorter antennae which are gradually tapering distally ; the first 

 segment rather short and about equal to the third, the second longest and 



* The two previous papers, treating of the genera Pkysostomum, Goniodes and Goniocotes, 

 appeared in this volume ( f the "Annotationes", pp. 67-72, 81-88. 



