NEW MALLOPHAGA. 13 



distinct, blackish brown, diverging, and with anterior 

 extremities reaching the bhickish, distinct, curving, lin- 

 ear ocular blotches; region between the occipital bands 

 pale; temples dark brown. 



Prothorax small, short, margins rounding; with one 

 long pustulated hair in posterior angle, another on pos- 

 terior margin just a little inside of the angles, and four 

 grouped together in the posterior median region of the 

 segment; median region pale to uncolored, darkening 

 laterally until the blackish lateral borders are reached. 

 Metathorax roundly angulated on the abdomen; an un- 

 pustulated hair in the lateral angles and ten long hairs 

 on each half of the posterior margin, rising from con- 

 spicuous pustulations; median region palest, lateral and 

 posterior regions blackish brown, causing the clear pus- 

 tulations to be very prominent. Legs smoky brown. 



Abdomen oval; lateral angles projecting, with long 

 hairs; dorsal surface of segments with single transverse 

 series of long weak hairs; median region almost uncol- 

 ored; prominent blackish brown, subtriangular, lateral, 

 transverse blotches, with very conspicuous uncolored 

 stigmatal spots and pustulations; segment 8 wholly col- 

 ored, dark brown; segment 9 with small triangular lat- 

 eral brown blotches; shallow, angular emarginution be- 

 hind. 



Nirmus. 



Nirmus punctatus Xitzsch. (See Kellogg, New Mallo- 

 phaga, I, 1S9G, p. 109, pi. vi, figs. 1 and 2.) 



Specimens from Larus sp. (Baja California). Taken 

 previously by me from several species of Larus (Bay of 

 Monterey, California). 



