188 INSECTS AFFECTING DOMESTIC ANIMALS. 
sutures of the segments faintly indicated, a few long hairs scattered over the median 
portion of the dorsal surface, two hairs on each lateral tubercle, these much elon- 
gated on segments 6 and 7; the eighth with a tuft of hairs. 
Length, 1.20; head, 0.27; thorax, 0.13; abdomen, 0.87; antenne,0.10mm. Width, 
0.50; head, 0.13; thorax, 0.20; abdomen, 0.50 mm. 
| This species departs so remarkably from others of the group that it 
seems necessary to erect for it a new genus. The most important 
characters and those which seem of generic value are the three-jointed 
antenne and the semicircular plates on margins of the abdomen. The 
sternal structure is also different. In general aspect, however, it 
approaches the genus Hzematopinus. 
Two specimens, both females, collected from the pocket or pouched 
gopher, Geomys bursarius, at Ames, Iowa. 
THE ELEPHANT LOUSE. 
(Hematomyzus proboscideus Piaget. ) 
This louse, infesting the elephant, is about as exceptionai in its way 
as the animal which harbors it. It appears to be ot quite recent 
notice, though it is not unlikely that it has been 
known in countries where the elephant 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 
Hematomyzus elephantis. The same author, how- 
ever, in his elaborate monograph, Les Pédiculines, 
changes the name to H. proboscideus. This louse 
Fig. 111.— Hamatomyzus differs from the others of the family in having 
pu aes a slender prolonged snout extending in front of 
; the head. The antennz are located at the base 
of this snout, and, according to Murray, are lenticular in form. In 
Piaget’s figure, however, they appear of nearly equal thickness. ‘Color 
reddish, madder brown, smooth, shining, impunctate” (Murray). 
THE LOUSE OF THE HARBOR SEAL. 
(Echinophthirius setosus Lucas.) 
This louse was collected in considerable numbers from a seal in the 
aquarium at New York last year (1895). Specimens forwarded to me 
by Professor Bean were accompanied by the statement that they were 
infesting the harbor seals there and it was feared they would prove 
troublesome. Later it was stated that they almost entirely eet 
during the molting of the animals. : 
The species is distinguished by having the body covered with numer- 
ous Small spines, and the antenne are but four jointed. 
