NEW MALLOPHAGA. 117 



posteriorly, anterior angles swollen, posterior margin 

 straight, with four long hairs, not pustulated, in posterior 

 angles ; lateral margins unevenly bordered with black and 

 dark brown, widest anteriorly; sternal blotch pale brown, 

 anterior part elliptical, with a backward-projecting, long, 

 slender, tapering process. Legs uncolored except for 

 pale brown tarsi and claws. 



Abdomen slightly widening to segment 6, and then 

 more rapidly narrowing; white, with two lateral brown 

 quadrangular blotches, fading inwardly, and each, except 

 on segments I and 7-9, with uncolored stigmatal spot; 

 these distinct and characteristic lateral blotches do not 

 touch the lateral margin, the white marginal border vary- 

 ing from very narrow to one-half the width of the blotches, 

 as in the specimen figured; ninth segment angularly 

 emarginated with two hairs on each point. 



I figure an immature specimen which is about one-half 

 the size of an adult; it lacks entirely the abdominal mark- 

 ings, showing small portions, but intensely colored, of the 

 thoracic and head markings. The presence of but one of 

 the long metathoracic hairs is interesting, and the usual 

 large head, characteristic of the immature stages, is 

 noticeable. 



Lipeuru celer n. sp. (Plate vii, figs. 5 and 6). 



This large dark form was found in great numbers on all 

 specimens except one of thirty Pacific Fulmars, Fulmarus 

 glacialis vars. glupischa and rodgersii (Bay of Monterey, 

 California), examined by me. It belongs to Taschen- 

 berg's group, clypeati sutura indis/incla, and its most 

 obvious resemblances are to grandis taken by Piaget on 

 Procellaria -pelagica in the Zoological Garden of Rotter- 

 dam. It is distinguished from grandis by the different 

 form of the head, by lacking the occipital signature, by 

 the presence of occipital bands, by the markedly different 



