ae, INSECTS AFFECTING DOMESTIC ANIMALS. 
Body margined distinctly with black. Head elongate, cordate; antennz set in 
rather deeply; eyes conspicuous; antennal cavity and temporal lobes with black 
border extending inward to mandibles, also a prominent orbital band; occiput sin- 
uous; prothorax subangular, lateral angles a little behind middle, with a single 
prominent hair; metathorax short, posterior border straight, lateral angles with 
three hairs, margin very black; legsrather slender; abdomen with black margin, and 
more or less distinct median bands, which are separated in median line and most 
distinct at the anterior and posterior borders. 
On domestic fowl. Burnett collection, and Ames, Iowa. Specimens 
from Professor Bruner are from a young duck, and it seems probable that 
the species may occur on different domestic fowls where opportunity 
offers for its transfer from one to another. — 
Packard’s figure (fig. 116, ante) is fairly good, though it lacks in detail 
for the certain recognition of the species. 
Lipeurus baculus Nitzsch. 
Pulex columbe majoris Redi, Exp. pl.2 (vide Denny); Louse of Pigeon, Albin, Aran. pl. 43. 
Pediculus columbe Linneus. 
Pediculus columbe, Geoffry, Vol, II, n. 7, p. 599; Schrank, p. 114,n.4, Tab.V., fig. 3; Fabricius 
Syst. Ent., n. 31, Spec. IT, p. 482. 
Nirmus filiformis; Olfers 90. 
LTipeurus baculus, Nitzsch, Germar’s Mag. Vol. ITI, p. 293; Lyonet, p. 273, Pl. XIII, fig. 10; Bur- 
meister, Handbuch, Vol. II, p. 434,8; Denny, p. 172, Pl. XIV, fig.3; Gurlt, Vol. VIII, p. 424, Pl. 
VIII, fig. 9; Giebel, Epiz., p. 215, Taf. XVI, fig. 8, st.9, Taf. XX, fig. 3; Giraud, Bulletin dela 
Soc. Ent., 1859; Piaget, Les Pédic., 303, Pl. X XV, flg.2; Osborn, Bull.7, Div. Ent., Dept. Agr., 
p. 38. 
Very common on pigeons and evidently very general in distribution. 
Cassino collection, H. O. collection; Hassall collection, and C. B. Cook 
collection. 
Lipeurus luridus Nitzsch (?). 
Elongate, nearly parallel, general color dusky brown. 
Head tapering in front of antennie ; clypeal suture indistinct, sides of head broadly 
margined; a large brown spot extending forward from the occiput, pointed anteriorly ; 
antennz of male with a very large basal joint, a much-curved third joint with the 
fourth joint set upon the outside of the curve; thorax quadrate, broadly margined 
with brown; metathorax trapezoidal, with four hairs near the posterior margin; 
legs large and strong; cox of second and third pair enlarged; abdomen widest about 
the middle, inthe male light dusky bands running from side to side, occupying full 
length of the segments at margins; segments 4, 5, 6, and 7 with long hairs at lateral 
angles, spiracles surrounded by a small, clear circle. 
I find it impossible to satisfy myself of the identity of my specimens 
from the American coot with the lwridus of European authors The 
description given by Piaget and the figure (by Nitzsch) in Giebe. are 
neither of them in accord with my specimens, and while Denny’s figure 
might be made to fit, his description indicates blacker margin than in 
my specimens, and moreover, he does not seem to have been certain of 
his species, assuming it to be luridus from occurrence on the same bird. 
Therefore, while retaining the name with some doubt, I think it well 
to state the diagnostic features, and if additional material or compar- 
ison with European specimens prove it to be distinct, it will be time 
enough to give it a separate description and name. 
