SUBORDER MALLOPHAGA. 243 
(Johnson collection). This species is allied to the 7. retusus occurring 
on weasel, etc., and also to 7. geomydis ou pocket gopher, but differs 
from the former in form of front of head, the absence of bands, size 
of male antenne, temporal lobes, and other characters which make 
it easy of separation. The same species, apparently, also collected 
from the ringtail cat (Bassariscus astuta), Lake County, Cal. (Johnson 
collection). 
Family LIOTHEID 4. 
Menopon rusticum Giebel. 
Giebel, Epiz., p. 288; Piaget, Les Pédic., p. 443, Pl. XX XVI, fig. 2. 
Occurred in large numbers on a house martin (Progne subis), at Ames, 
. lowa. 
Menopon pallidum Nitzsch. 
Pulex capi Redi, Tab. XVI, fig. 1 (vide Piaget). 
Pediculus galling Linné, Syst. Nat. II, p. 1023, probably; Panzer, p. 51, fig. 21 (vide Piaget); 
Geoffroy, Vol. II, p. 601. 
Nirmus trigonocephalus Olfers, p. 90. 
Menopon pallidum Denny, p. 217, Pl. X XI, fig.5; Gurlt, Vol. VIII, p. 428, Taf. IV, fig. 14; Giebel, 
p. 291, Pl. XVII, fig. 11, and Pl. XIX, figs. 2 a 5; Piaget, p. 459, Pl. XX XVII, fig.7; Osborn, 
Bull. 7, Div. Ent., Dept. Agr. 
A universal parasite of the domestic fowl. I have examined many 
specimens in different collections, and have seen and collected it on 
many occasions myself. 
Menopon biseriatum Piaget. 
Piaget, Les Pédic. p. 469, Pl. XX XVII, fig. 2. 
Collected at Baltimore, from domestic fowl, by Dr. A. Hassall. Also 
in Cornell University collection. It appears to be less common than 
the preceding, though often associated with it, and probably generally 
mistaken for large specimens of that species. 
Menopon titan Piaget. 
Les Pédiculines, 1880, p. 503, Pl. XI, fig. 7. 
Tetraophthalmus chilensis Grosse, Zeit, f. w. Zool., 1885, Vol. XIII, p. 530. 
Menopon titan Kellogg, New Mallophaga, p. 163. 
Recorded by Kellogg from Pelicanus californicus. He proposes three 
varieties to represent the species. 
_ Menopon consanguineum Piaget. 
(?) Menopon perale Leidy, Proc. Acad. Nat. Sci. Phila., 1878, p. 100. 
Menopon consanguineum Piaget, Les Pédic., Suppl., p. 116, Pl. XII, fig. 7. 
Occurs in great numbers in buccal cavity of pelican. Has been col- 
lected at Ames, Iowa, and specimens examined in collections of Na- 
tional Museum, Kansas University, Boston Society of Natural History, 
ete. <A record of its occurrence has been given in Insect Life, V, p. 284. 
Also recorded by anes as var. impar of titan (?) New Mallophaga, 
Proc. Ac. Sci. Cal., series 2, Vol. VI (1896). 
It seems to me the variations exhibited in this species may be due to 
its peculiar habit and the probability that this habit is of recent origin. 
Menopon pallescens Nitzsch. 
Menopon perdicis Denny, Monog., p.225, Pl. X XT, fig. 9. 
Menopon pallescens Ztschr. fiir ges. Naturwissensch., 1866, Vol. XXVIII, p. 391; Giebel, Epiz.. 
p- 293, 
