MALLOPHAGA FROM BIRDS 461 



Narboro, and one male and one female from Nesomimus carringtoni 

 from Barrington. 



All these agree well in shape, marking, and other characters with 

 the type specimens of D. validus from Puffi.}uis gavia from Monterey- 

 Bay, California, but are uniformly smaller, being about two thirds the 

 size of the type-specimens. 



DOCOPHORUS PLATYCEPHALUS sp. nov. 



(PI. XXVIII, fig. I.) 



Three specimens, two male and one female, from Oceanites gra- 

 cilis from Albemarle, and a female from Geospiza fuliginosa from 

 same island. Differs from D. thalassidromce Denny from Thalassi- 

 droma ( Oceanites) pelagica in having the clypeus emarginate, the 

 abdominal blotches brown instead of black and the blotches with semi- 

 pustulations along posterior margin. 



Male. — Body, length 1.25 mm., width .44 mm. ; brown with dark 

 brown lateral border ; head wider than abdomen. Head, length .46 

 mm., width .43 mm. ; very large in proportion to size of body; front 

 with deep invagination ; clypeus expanded laterally, rounded with two 

 hairs on the front of the suture, a single hair arising from the dorsal 

 surface near the obtuse anterior angle ; two short hairs in front on the 

 trabeculas ; trabeculse as usual ; antennae large, segment 2 longest ; eyes 

 inconspicuous, with a long hair and a prickle ; temporal margin with 

 a hair and three prickles, occipital margin sinuous ; color golden 

 brown ; signature shield shape ; produced acuminate posterior angle 

 not reaching the mandibles ; antennal bands pale golden brown, indis- 

 tinct posterior ends turning diagonally inward ; occipital bands indis- 

 tinct, weakly colored, very narrow dark border on the temporal and 

 occipital margins. Prothorax short, broad with slightly diverging 

 sides and rounded posterior angles, with one hair ; with marginal lateral 

 bands bending inward along posterior margin. Metathorax with sides 

 rapidly diverging, which are slightly concave ; posterior margin with 

 rounding angle on the abdomen, and a series of about ten pustulated 

 hairs arranged along each lateral half. Legs concolorous with thorax, 

 with dark brown margins on femora and tibiae. Abdomen elliptical, 

 short, narrower than head ; segments 2 to 8 with two to three long 

 hairs on posterior angles ; a single transvei'se series of pustulated hairs 

 along dorsal margin; ground color yellowish-brown; dark lateral 

 bands, wide, tapering posteriorly, a transverse dark line along pos- 

 terior margin of each segment ; posterior margin of last segment flatly 

 rounded, with a few longish hairs. 



