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, 18S0, p. 503, pi. xl, fig. 7. 

 Tetraoplhalmus chiknsis 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 calif or nicas (Bay of Monterey, Cal- 

 ifornia) , and on the White Pelican, Pelicanus erythrorhyn- 

 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- 

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



