MALLOPHAGA FROM BIRDS OF THE PONAFÉ I. ETC. 487 



p. 123; Osborn, Bui. No. 5 (n. ser.), Div. Ent. U.S. Dept. Agr., p. 199, fig. 

 121 ; Kellogg, New Mallophaga, II, p. 506, pi. Lxviii, figs. 4 and 6. 



A male specimen of this cosmopolitan parasite of the pigeon was 

 obtained from Nycticorax calédoniens collected in the Palau Ids. (May). 



10. Lipeurus potens Kellogg and Kuwana. 



Kellogg and Kuwana, Proc. Wash. Acad. Sci. Vol. IV, p. 477, pi. xxx, fig. 1. 



Six male, eight female, and eleven young individuals of the species 

 were collected from siila siila shot on sea, off the Mariana Ids. The 

 size of body in the present specimens is somewhat smaller than in the 

 type specimens. Measurements of the specimens on hand are as 

 follows : 



Length of body, 3.50 mm. 3.00 mm. 



Width of body, .66 „ .76 „ 



Length of head, .66 „ .66 ,, 



Width of head, .63 „ .63 „ 



Length of thorax, .46 ,, .40 „ 



Width of thorax, .60 „ .57 „ 



11. IÄpeurtis sinuatus Taschenberg. 



Taschenberg, Die Mallophagen, p. 180, Taf. vi, fig. 6. 



A male specimen was taken from Megapodins laperonsi obtained 

 in the Palau Ids. (March 6). 



The specimen agrees with Taschenberg's description and figure, 

 except in the smaller size of body and in the shape of the last 

 abdominal segment which is less conspicuously emarginated. The 

 differences are, however, probably due to the immaturity of the speci- 

 men examined by me. 



Measurements (those in parenthesis are Taschenberg's) : 

 Length of body, 2.14 (2.61) mm. 

 Width of body, .40 ( .53) „ 

 Length of head, .54 ( .66) „ 



