MALLOPHAGA FROM BIRDS 475 



parvulus from Narboro ; N. adamsii from Chatham ; N. carringtoni^ 

 2 specimens from Barrington ; Ca?narhynckus productus^ 3 specimens 

 from Narboro ; C. affinis from Albemarle ; C. prosthemelas from Al- 

 bemarle ; Certhidea albermarli from Albemarle ; C. beckii from 

 Wenman ; Dendroica aureola from Albemarle ; Myiarchics magni- 

 rostris from Albemarle ; Pyrocephalus intercedens from Albemarle ; 

 Sterna fuliginosa from Clipperton Island. 



All these specimens agree in differing from the type specimens col- 

 lected from numerous passerine bird species of California and Kansas, 

 in the more pronounced character of the markings, the color of the 

 markings being blackish instead of brown, and their outlines being 

 much sharper. The transverse abdominal blotches are narrower and 

 not interrupted by a median longitudinal uncolored line as in the type 

 specimens, and the whole body of the Galapagos specimens is a little 

 less slender and elongate than that of the American specimens ; it is a 

 more robust form. 



NIRMUS INTERPOSITUS Kellogg. 



Kellogg, New Mallophaga, iii, p. 23, pi. 11, fig. 7, 1899. — Kellogg, List of 

 Mallophaga, p. 58, 1899. 



Numerous males and females from Geospiza fuliginosa from Albe- 

 marle and Narboro ; G. fortis^ 3 specimens from Albemarle ; Nes- 

 omimus parvulus^ 3 specimens from Albemarle ; N. carringtoni 

 from Barrington ; Ca?narhynchus variegatus from Albemarle. The 

 type specimens wxre taken from Dendroica viellotti from Panama. 

 No other records yet made. 



Genus Lipeurus. 



LIPEURUS LANGUIDUS sp. nov. 



(PI. XXIX, fig. 8.) 



Numerous males and females from Oceanites gracilis^ 5 specimens 

 from Albemarle ; from Procellaria tethys from Albemarle ; from Sula 

 ^z'.fca/f?;' from Culpepper ; ixoxw. Actitis viacularia from Albemarle; 

 from Pyrocephalus intercedens from Albemarle ; from JVesofnimus 

 parvulus from Albemarle ; from Geosp iza fuliginosa from Albemarle ; 

 from Ca77iarhynchus productus from Albemarle. This new Lipeurus 

 resembles Piaget's angusticeps and KcUogg's diversus but differs in 

 markings of head and abdomen. 



Male. — Body, length 3.34 mm., width .38 mm. ; slender, parallel 

 sides ; body with distinct chestnut brown marginal markings. Head, 



