6 CALIFORNIA ACADEMY OF SCIENCES. 



Pediculus fasciaius Scopoli, Entomol. Carniol, 1763, p. 383. 

 Docophorus latifrons N., Denny, Monograph. Auoplur. Brit., 1842, 



p. 97, pi. i, fig. 4; Giebel, Insecta Epizoa, 1874, p. 93; Piaget, 



Les Pediculiues, 1880, p. 36, pi. ii, fig. 7. 



Numerous specimens from a California Cuckoo, Coc- 

 cyzus americanus occidentalis (Baja California), which 

 are referable to this long-known Docophorus of the 

 cuckoos, but on account of the markedly larger size, 

 color differences, and other minor differences must be 

 given a varietal name. 



Var. occidentalis Kellogg. Male, body, length 2.06 

 mm., width .89 mm.; head, length .75 mm., width .75 

 mm. Female, body, length 2.5 mm., width 1.12 mm.; 

 head, length .84 mm., width .85 mm. Piaget gives the 

 following dimensions for latifrons: female, body, length 

 1.9 mm., width, .85 mm.; head, length .65 mm., 

 width .6 mm. The male latifrons is 1.6 mm. long. 

 My specimens have two long hairs on the temporal 

 margins instead of one as described for latifrons, and 

 have a distinct hair, not referred to in the descriptions 

 of latifrons, in the posterior angles of the prothorax. 

 The blotches on the ventral aspect of the abdomen of 

 the males are with my specimens not oval, but trans- 

 versely elongate, differing markedly from those of the 

 female. The head and thorax of var. occidentalis are 

 reddish brown, the ground color of the abdomen 

 whitish, and the blotches blackish brown. 



Docophorus calif orniensis Kellogg. 



New Mallophaga, II, 1896, p. 483, pi. Ixvi, fig. 6. 



Eleven specimens from a Narrow-fronted Woodpecker, 

 Melanerpes formicivorous angustifrons (Baja California). 

 Type specimens taken from the Californian Woodpecker, 

 Melanerpes formicivorus bairdi (Palo Alto, California). 



