NEW MALLOPHAGA. 87 



lateral, brown, triangular blotch, with an outer, marginal, 

 narrow, blackish line contiguous to the anterior margin 

 of the segments, but leaving an uncolored space about 

 one-third the length of the segment between the hind mar- 

 gin of blotch and posterior margin of segment; each seg- 

 ment with a single transverse series of long hairs pustulated 

 along the posterior margin of the triangular markings, but 

 not pustulated in the median, uncolored portion of the seg- 

 ment; a conspicuous, clear, stigmatal spot in each blotch; 

 triangle of first segment extending furthest inwards (nearly 

 to median line), and shorter on each succeeding segment; 

 eighth segment wholly colored; ninth segment uncolored, 

 short and emarginated; a large, broadly crescentic, gen- 

 ital blotch with a median, angulated projection in poste- 

 rior concave border on ventral face of segments 6-7. 



Male, length 1.5 mm., width .4 mm.; head, length .53 

 mm., width .5 mm.; abdomen short, broadly ovate, with 

 triangular blotches prolonged inwardly; ninth segment 

 flatly rounded behind with a few rather long hairs. 



Docophorus montereyi n. sp. (Plate iii, fig. 6.) 



Abundant on the Ancient, Marbled and Aleutian Mur- 

 relets, Synthlibor ham fins ant i quits, JBrachyrhampus mar- 

 moratus and Ptychor ham fits aleuticiis (Bay of Monterey, 

 California). Specimens were taken from forty- six indi- 

 viduals out of fifty-five birds of these species shot. 



Description of male. Body, length 1.56 mm., width 

 .53 mm.; head large, pale golden brown, abdomen dark, 

 thorax and abdomen with black lateral border. 



Head, length .47 mm., width .43 mm.; uncolored front 

 of clypeus very slightly expanded, rounded with a single 

 marginal hair on the side in front of the suture; trabecu- 

 lar large reaching almost to the middle of the second an- 

 tennal segment; antennas with first segment thick and 

 about as long as second, third and fourth very short, equal, 



