NEW MALLOPHAGA. 67 



sides subparallel; head about as long as wide, with swell- 

 ing rounded temples; clypeus including most of the fore- 

 head; without antennal bands, and with a deep angular 

 frontal emargination or notch (much as in Akidofirocttis) ; 

 antenna? situated in front of middle of head and differing 

 in the sexes; the antenna of male long, first segment 

 thickened and as large as all the others together and with 

 a pointed projecting process; antenna of female short, 

 first two segments of equal length; legs very long, abdo- 

 men of both sexes with posterior segment 2 -pointed be- 

 hind. But one species has been described, taken from 

 Palamedea. 



Genus Lipeurus Nitzsch. (Plates vii, viii, ix and x.) 

 Body long, slender; head usually narrow, elongate, with 

 rounded temporal margins ; clypeus usually with distinct 

 signature, and with distinct or indistinct suture; antennae 

 differing in the sexes, the male antenna with first segment 

 long and thick, rarely with appendage; third segment has 

 an appendage, which is sometimes small and inconspicu- 

 ous; the female antenna is simply filiform with first seg- 

 ment the thickest and second segment the longest; meta- 

 thorax usually at least twice as long as the prothorax, 

 often showing a lateral constriction indicating the line of 

 fusion of meso- and meta-segments; the legs arise far 

 apart, the proximity of the coxal cavities of the second 

 and third pairs of legs to the thoracic margins being one 

 of the diagnostic characters of the genus; the coxae are 

 long and project conspicuously beyond the lateral margins 

 of the thorax; abdomen elongate and narrow, with seg- 

 ments 8 and 9 fused. Body color, white to brown, with 

 conspicuous markings of pale brown to black. There 

 are many described species and they have been found on 

 all kinds of birds, being especially common on swimmers 

 and rare on passerine birds. 



