NEW MALLOPHAGA. 1 59 



small pointed blotch with two diverging very small linear 

 processes projecting anteriorly, the whole between strongly 

 curving, inwardly produced intercoxal lines, on meso- 

 thorax; and a larger median blotch, truncate behind, 

 convex before, with two small linear points near the pos- 

 terior angles of median blotch, on metathorax; a smaller 

 semilunar median blotch on first segment of abdomen is 

 also apparaent; the blotches of metathorax and first ab- 

 dominal segment are beset with numerous short pustu- 

 lated hairs. Legs pale smoky brown, with darker mark- 

 ings. 



Abdomen, elongate oval, posterior angles of segments 

 1-3 projecting a little; the others barely or not at all; a 

 rather long hair and some shorter ones in each angle; 

 also a series of hairs in small pustulations along the pos- 

 terior margin of each segment; all segments with a broad, 

 distinct, lightfuscous, transverse band whose extreme outer 

 margins are darker; the bands separated by wide, uncol- 

 ored, sutural lines; last segment, broad, short, uncolored, 

 posterior margin concave with a series of fine short hairs. 



Menopon numerosum n. sp. (Plate xv, fig. i.) 



An abundant parasite of the Pacific Fulmars, Fulmarus 

 glacialis vars. glupischa and rodgersii ', taken on twenty- 

 four out of thirty specimens shot on the Bay of Monterey, 

 California. 



Description of male. Body, length 1.44 mm., width 

 .62 mm.; pale yellowish to reddish brown, with trans- 

 verse abdominal bands, separated by broad, white, su- 

 tural bands. 



Head, length .28 mm., width .50 mm.; front very ob- 

 tusely but distinctly angled with two short hairs on each 

 side of the median angle; three long hairs and three short 

 ones before the slight ocular emargination; a sparsely set 



