LICE AFFECTING DOMESTIC ANIMALS. 
273 
pecies has been fortunate enough not to have received any 
■ther designation since, although it has been mentioned in 
(lost of the works referring to the parasites on domestic fowls 
r the parasites of birds. It is a very common species and 
ccurs on a great many different species of ducks, so it is un- 
ecessary to try to enumerate the hosts. So far as we have 
?en or can learn from record, however, it is not known to 
ccur on birds outside of the duck family ( Anatidce ). 
Aside from these species mentioned there are many others 
aecting domestic fowls; pigeons, turkeys, geese and guinea 
ens. all supporting a numerous host of these parasites. 
We have not space here to give further details regarding 
lem, but it may be mentioned that remedies suggested for 
le chicken louse apply as a rule to the other kinds and for 
rtliei details the reader may be referred to Bulletin No. 
Division of Entomology, U. S. Dept. Agriculture. 
EXPLANATION OF PLATES. 
Plate I. 
Fig. 1.—Hcematopinus eurysternus ; a, female; b, rostrum; a, ventral surface, 
rigin” 6 ) 118 ° f mal<3: ^ feUWle; 6gg; f ’ SUrtaCe ° f egS greaUy eD,ar S ed - 
Fig. 2.— Hcematopinuspiliferus. (Original.) 
Fig. 3 —Hcematopinus vituli, and under surface last segments of female 
>wing brush-like organs. (Original.) 
Fig. 4.— Hcematopinus asini (From Comstock.) 
Fig. 5.— Hcematopinus urius; a , female; b, male, ventral view of posterior 
ments ; c, leg, showing protractile disk of tibia. (Original.) 
Plate II. 
Fig. 6. — Trichodectes parumpilosus. (Original.)* 
Pig. 1. Trichodectes pilosus. (After Piaget.) 
Fig. 8.—Trichodectes scalaris. (Original.)* 
Fig. 9.— Trichodectes sphoerocephalus. (After Denny.) 
Fig. 10.— Trichodectes subrostratus. (Original.) 
Fig. 11. Trichodectes latus. (After Denny.) 
Pig. 12 .—Goniocotes abdominalis; hologaster of Denny. (After Denny.) 
Pig. 13.— Menopon 'pallidum. (After Denny.) 
Fig. 14.— Trinoton luridum. (Original.) 
All the figures are reproduced from Bulletin 7, Div. Ent. U. S. Dept. Agri¬ 
lure, and unless otherwise credited, were drawn expressly for that Bulletin by 
author or finished from his sketches by Miss Lillie Sullivan under the super- 
)n of Dr. Riley. 
The hair line in the figure is about one-fifth longer than it shomdbe! " " 
