Maicii, I902.] Kellogg & Chapman: American Malf.ophaga. 25 



margin of metatliorax with four long postulated hairs ; the ground color as in the pro- 

 thorax, the anterior and lateral margins with broad blackish-brown band from which 

 incurving projections extend, one pointed blotch curves in from each anterior angle ; 

 the uncolored narrow median line eNtends through the meso- and metathorax, the dark 

 band each side of this widens with a broad pyramid-shaped blotch on the mesothorax 

 and diminishes again on the metathorax, though the anterior portion of the metathor- 

 acic blotch is much darker brown ; sternal markings of prothorax dark median blotch, 

 anterior two thirds ([uadrangular, slightly concave on anterior margin ; posterior por- 

 tion drawn out in a narrow neck, whole blotch looking like a flat-sided bottle ; inter- 

 coxal lines dark brown. Metathorax with median markings oval with anterior and 

 posterior ends narrowly drawn out ; posterior portion of the oval supported by broad 

 dark lateral bars, anterior portion with gracefully curved bars like handles to a slender- 

 naked vase. Legs large and strong, covered with long hairs and short spines ; pale 

 golden brown with dark brown markings. 



Abdomen elongate, oval, sides sub-parallel, widest at fourth segment, no dis- 

 tinct marginal constrictions between the segments, a series of long and shorter hairs 

 along the lateral margins of the body and a series of long pustulated hairs on the pos- 

 terior margin of each segment ; last segment broadly rounded with a series of short 

 marginal hairs and scattered dorsal hairs, color pale brown, dark brown lateral bands 

 separated from the paler median portion by uncolored sub marginal lateral bands; 

 the narrow median uncolored line of the thorax shows in the anterior portion of the 

 first three segments of the abdomen ; the anterior portion of the median transverse 

 blotches of the segments is darker brown. 



One specimen from A user albifrons gambeii coWecied in San Fran- 

 cisco by Leverett M. Loomis, curator of birds, California Academy of 

 Science. The largest species of Mallophaga so far known, exceeding 

 the length of Lipeunis ferox (from albatrosses) by about .5 mm., and 

 its width by about the same. 

 Trinotum luridum Nitzsch, Germar's Mag. d. Ent., Ill, 1818, p. 



300; Kellogg, List of Mallophaga, 1899, p. 70. 



From Urinator pacificus (California). 

 Ancistrona gigas Piaget, Les Pediculines, Supplement, 1885, p. 



117, pi. XII, fig. 8 ; Kellogg, List of Mallophaga, 1899, p. 71. 



From Puffinus creatopus and P. griseiis (California). 

 Colpocephalum maculatum Piaget, Les Pediculines, 1880, p. 



516, 1)1. XLIII, fig. I ; Kellogg, List of Mallophaga, 1899, p. 74. 



From Polyphorus cherhvay (Tampico, Mexico). 

 Colpocephalum funebre Kellogg, New Mallophaga, I, 1896, p. 147, 



pi. XII, fig. 7 ; List of Mallophaga, 1899, p. 72. 



From Larus glaucus (California and Kadiak Island, Alaska). 

 Colpocephalum flavescens Nitzsch, Germar's Mag. d. Ent., Ill, 



1818, p. 298 ; Kellogg, List of Mallophaga, 1899, p. 73. 



