50 
NORTB AMERICAN FEVER TICK AND OTHER SPECIES. 
The Bpecies which they then listed a^ D. reticulatus Neumann is now 
considered by Doctor Stiles and Mr-. Banks as Neumann's D. occi- 
dentalis, described from specimens collected in Sonoma County, Cal- 
ifornia, and Labeled D. occidervtalis by Marx. The I). reticulatus of 
Salmon and Stile- is now considered bj Banks as albipictus Packard. 
While D. reticulatus Fabriciusis widely distributed, being found in 
Europe and Asia, so far as known ii has not been taken in this coun- 
try. D. paruwnapertus, described by Neumann in 1901 from 4 female 
specimen^ taken at Lakeside, Cal., labeled as taken on a man and in 
a chicken bouse; and D. bifurcatus Neumann, from a wild cat in 
Texas, described as Ixodes and later referred to the genus Derma- 
centor, seem to come close together, although they may be distinct 
species. According to Mr. Banks, Ixodes nigrolineatus Packard is a 
Dermacentor. To those referred to can now be added Dermacentor 
nitens Neumann, which has been collected by Mr. J. D. Mitchell, of 
this Bureau, making a total of 7 described species so far known to 
occur in the United States. 
AMERICAN DOG OR WOOD TICK. 
(Dermacentor variabilis Say.) 
Synonymy (on the authority of Mr. Nathan Banks): I), americanus authors (not 
L.); D. electus Koch. 1814: Lodes albipictus Pack. (1st Peabody Acad. Kept., p. 66, 
nol Guide and Am. Nat.); I. quinquestriatus Fitch, 1871; I. robertsoni Fitch, L871; /. 
punctulatus Say, 1821(?). 
This species is distinguished by the finely punctate stigma] plate 
(see PL IV, fig. 5). It is widely distributed over the country, and has 
been taken commonly in northern and southern Texas and in Florida 
on the dog. In some sections of Texas. Amblyomma maculatum and 
RMpicephalus sp. are the common ticks on the dog, which is also the 
case with I. scapularis in Florida. Neumann records a male taken 
on a rabbit, Lepus callotis, by Duges, at Guanajuato. Mexico. Cattle 
also serve as hosts. 
Prof. II. A. Morgan records 7,378 eggs as deposited by a single tick 
between May 8 and 26. These eggs commenced hatching on August 
20, an incubation period of 27 days. Our records include data on the 
deposition of eggs by a tick collected April 30, oviposition commenc- 
ing May 8. The details follow: 
Table XII. Oviposition of Dermacentor variabilis. 
Number of eggs deposited— 
a 
32 
- 
- 
- 
72 
© 
- 
1,4 
_ 
- 
232 
- 
251 
- 
s 
3 
237 
2 
>. 
- 
a 
246 
- 
- 
a 
* 
- 
a 
L 
a 
c 
■M 
>. 
153 
i 
- 
a 
ri 
- 
a 
L04 
- 
- - 
a - 
71 
a 

>. 
a 
a 

t- 
: 
>. 
- 
a 

K 
1 
