NEW MALLOPHAGA. I 27 



Lipeurus ferox Giebel. (Plate ix, figs, i and 2.) 



Zeitscb. f. ges. Naturwiss., 1867, xxix, p. 195. 

 Pediculus diomedce. Fabr. Ent. Syst., 1794, iv, p. 421. 

 Lipeurus diomedce Dufour. Ann. Soc. Ent. France, 18.34, iv, p. 669, 



figs. 1 and 2; Giglioli, Quart. Jour. Mic. Sci., 1864, iv, N. S., 



p. 19, plate i, b, figs. 1, 2. 

 Lipeurus pederiformis Dufour. Ann. Soc. Ent. Franco, 1834, iv, p. 



676, pi. 26, rig. 4. 

 Lipeurus fer ox Giebel. Insecta Epizoa, 1874, p. 235. Fiaget, E. Les 



Fediculines, 1880, p. 333. Taschenberg, O., Die Mallophagen, 



L882, p. 145, pi. v, figs. 1, la. 



To this large and striking species may be attributed 

 three specimens, one male and two females, taken from 

 the Short-tailed Albatros, Diomcdea albatrus. The male 

 was taken from one bird, the two females from another; 

 these two birds, both immature, were the only speci- 

 mens of this bird species taken on the Bay of Monterey. 

 The various descriptions of ferox by Giglioli, Giebel, 

 and Taschenberg differ somewhat; Giebel had only a 

 male before him; Taschenberg had in addition an imma- 

 ture female, and while Giglioli had both sexes his de- 

 scriptions are incomplete. 



Description of female. Body, length 9. mm., tapering 

 from sixth abdominal segment abruptly to tip of abdomen, 

 and gradually toward the head; strongly and distinctly 

 marked with dark brown on both sides of the body for 

 its whole length; a median uncolored line widest on head 

 and on sixth abdominal segment; body nearly glabrous. 



Head, length 2.1 mm., width 1.4 mm.; widest behind 

 the eyes; margins of head in front of antenna? nearly 

 straight and oblique; temporal margin feebly rounding; 

 occipital margin weakly concave; clypeal suture distinct; 

 clypeus convex in front, without hairs or bristles : at 

 suture a slight rounded emargination, with one long hair, 

 and behind it five short hairs, farther back one short hair, 

 and in front of insertion of antenna* two short hairs; sig- 



