23 
where the clephant has been domesticated for an indefinite length 
of time. 
It was described by Piaget (Tijdschr. voor. Ent., 
2d series, IV, 254) in 1869, under the name of Hama- 
tomyzus elephantis. The same author, however, in 
his elaborate monograph, Les Pediculines, changes 
the name to H. proboscideus. This louse differs from 
the others of the family in having a slender pro- 
longed snout extending in front of the head. The 
Fic. 10. — Hematomy- antennz are located at the base of this snout, and 
ee eee (After according to Murray are lenticular in form. In 
Piaget’s figure, however, they appear of nearly equal 
thickness throughout. ‘‘ Color reddish, madder brown, smooth, shining, 
impunctate.” (Murray.) 
TECHNICAL DESCRIPTIONS OF NEW SPECIES. 
LOUSE OF THE FIELD MOUSE. 
(Hematopinus acanthopus Burm.) 
Apparently common on our species of Arvico.a, and does not appear 
to vary in any important particular from the descriptions of European ~ 
specimens. 
DESCRIPTION OF THE EGG. 
The egg in this species, unlike those of other forms we have met, is attached to a 
bundle of hairs instead of to one, our specimen thus 
having attachment to four hairs, as shown in Fig. 11. 
This would seem to be an excellent provision where the 
hair is so fine as in these animals. 
The egg is elongate oval, broad, and somewhat trun- 
cate at the attached end; the surface is ronghened, 
rugulose, or foveolate appearing squamous in places, 
and in section showine rounded pits on the surface; 
the investing substance at base is slightly corrugated. 
See rig. lle. 
The larva is much shorter and thicker in proportion 
than the adult, the spiny hairs of the abdomen wanting, 
but with one or two long slender hairs extending back 
from the terminal poriion. 
Fic. 11.—Hematopinus acantho- 
pus: a, dorsal view; b, head; e, 
sternal plate; d, posterior leg; e, 
egg; all enlarged. (Original.) 
LOUSE OF THE FLYING SQUIRREL. 
(Hematopinus sciuropteri n. sp.) 
Body slender, light yellow; head as broad as long, expanding laterally at the pos- 
terior border above and with an acute angle behind; beneath triangular and running 
back to a sharp angle between the anterior legs, the front projecting very slightly 
beyond the antenne, very slightly convex, the rostrum located back of the anterior 
