MALLOPHAGA FROM BIRDS 485 



Genus Menopon. 

 MENOPON SINGULARIS sp. nov. 



(PI. XXXI, fig. I.) 



One female and an immature specimen from two individuals of 

 Anous stolidtis from Clipperton Island. 



Female. — Body, length 1.76 mm., width .76 mm.; color, golden 

 brown ; abdomen with strong, dai'k brown transverse bands. Head, 

 length .36 mm., width .65 mm.; front very obtusely but distinctly 

 angled with three hairs on each side, then two prickles, then five hairs 

 in front of the ocular region, of which three are long ; palpi pi-ojecting 

 slightly ; antennae not projecting beyond margin of head ; temporal 

 margin with four long hairs and many prickles ; occipital margin con- 

 cave with four long hairs. Color golden brown, darker medially, 

 large black ocular fleck and dark chestnut brown ocular blotches, and 

 a linear, black occipital border. Prothorax w^ith produced antero- 

 lateral angle, bearing one long hair and two prickles along rounded 

 anterior margin and two long hairs and one prickle on posterior angle ; 

 posterior margin with four long hairs on each side of middle. Meta- 

 thorax with divergent sides, narrower than head, with flatly convex 

 posterior margin bearing a series of rather weak hairs, with dark 

 brown transverse blotches along posterior margin. Legs pale brown 

 with dark brown margins. Abdomen broadly ovate, with broad trans- 

 verse bands across all segments ; in the anterior angles of each trans- 

 verse band of segments 2 to 8, a small curving comma-like chitinous 

 band ; the segments with fine hairs on lateral margin and a series of 

 long hairs in the posterior margin ; segment 9 with posterior margin 

 flatly round, with a few short hairs and two long ones. 



MENOPON NARBOROUGHI sp. nov. 



(PI. XXXI, fig. 2.) 



One male from Butorides plumbeus from Narboro and one female 

 from Puffinus subalaris from same island. This species differs from 

 M. pauhihwi and M. petulans in shape of prothorax and other char- 

 acters. 



Male. — Body, length 1.58 mm., width .7 mm. : pale golden brown, 

 with golden brown transverse abdominal bands ; broad and heavy. 

 Head, length .35 mm., width .62 mm.; semilunar with flatly round- 

 ing front, shallow ocular emarginations, and rounded posterior angles ; 

 occipital margin flatly concave; a pair of marginal hairs in middle of 

 front and others on sides ; temporal margins with three long hairs and 



