NEW MALLOPHAGA. 163 



tional hairs on the occipital margin; a small, black, ocular 

 fleck, dark brown ocular blotch, the mandibles black- 

 tipped, the other mouth-parts and the basal segments of 

 the palpi brown. 



Prothorax with produced lateral angles obtuse, bearing 

 two spines and a long hair, which is the terminal one in 

 a series of fourteen ranged along the rounded posterior 

 margin of the segment; the transverse line with curving 

 vertical lines at its extremities is distinct. Metathorax 

 with divergent sides, not quite as wide as head, with flatly- 

 convex posterior margin bearing a series of long hairs; 

 in each lateral angle several small spines and the terminal 

 hair of the posterior series. Legs concolorous with body; 

 with scattered, rather long hairs. 



Abdomen ovate, with broad transverse bands across all 

 segments separated by wide uncolored sutures ; in the 

 anterior angles of each transverse band a small curving 

 comma-like chitinous band; the segments with fine hairs 

 on lateral margins, and longer weak hairs in the posterior 

 angles; dorsal surface with hairs. 



Menopon titan Piaget. (Plate xv, fig. 2.) 



Les Pediculines, 1880, p. 503, pi. xl, fig. 7. 

 Tetraopthalmus chilensis Grosse, Zeitschr. f. wiss. Zool., 1885, vol. xlii, 

 p. 530. 



Many specimens of this species, or of a variety, found 

 on four of five specimens examined of California Brown 

 Pelican, Pelicanus californicus (Bay of Monterey, Cal- 

 ifornia) , and on the White Pelican, Pelicdnus erythrorhy fi- 

 chus (Lawrence, Kansas). These large conspicuous par- 

 asites are found not alone among the feathers of the host 

 but also abundantly clinging to the inner surface of the 

 gular pouch, a circumstance which suggests that feathers 

 may not constitute the exclusive food of the parasites. 



Piaget has described two species of these giant Meno- 

 fions of the Pelicans, viz. : titan found on Pelecanus ono- 



