202 



s. ucuiüa : 



as long as the last three segments taken together, the fifth shortest and 

 equal to two-thirds the fourth in length. Hairs in the uncolourcd elliptical 

 space near the posterior angles of metathorax number five, as in the male. 



Young individuals 4-4.5 mm. long and of the same stage of develop- 

 ment as the female described by Kellogg, show three hairs at each of the 

 posterior angles of metathorax, while still younger individuals of 2-2.7 mm. 

 length have only a single hair at each of the same positions. In a specimen 

 which was collected in the moulting condition, there are to be seen at that 

 position three hairs in the exuvia, but five hairs in the emerging insect. 

 Probably the number of the hairs increase at each moulting, there appealing 

 five of them at the last ecdysis. 



Measurements of adult females as follows : 





mm. 



mm* 



Length of body 



5.78 



6.17 



Width of body 



1-32 



1.50 



Length of head 



125 



1.28 



Width of head 



1. 12 



1.04 



Length of thorax 



1.58 



1.60 



Width of thorax 



1-25 



1.29 



Antenna 



0.68 



0.70 



2. Lipeurus confiti ens Kellogg. 



Kellogg, New Mallophaga, III, 1899, p 26, pl. Ill, fig. 1 (female only). 



Four males and ten females of this species were taken from three skins 

 of the Audubon's albatross, Diomcdea nigripes, from the Sagami Bay (March 

 27, 1884), Bonin Is (1892) and Tiausu Id., Loo-choo (May, 1900). Further, 

 one male, three females and two young specimens were obtained from a skin 

 of the Steller's albatross, uiomedea albatrus from Prov. Awa (Feb. 19, 1888.) 



Description of tJie male:— Smaller than female; body 3.3 mm. long, 

 0.78 mm. wide. Head somewhat slender, 0.77 mm. long, 0.61 mm. wide ; 

 temporal margins just behind eyes more rounded than in female, trabecular 

 wanting ; first segment of antennae very large, without appendage, but with 



