50 NORTH AMERICAN FEVER TICK AND OTHER SPECIES. 
The species which they then listed as 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. occidentalis by Marx. The D. reticulatus of 
Salmon and Stiles is now considered by Banks as albvpictus Packard. 
While D. reticulatus Fabricius is widely distributed, being found in 
Europe and Asia, so far as known it has not been taken in this coun- 
try. D. parumapertus, described by Neumann in 1901 from 4 female 
specimens taken at Lakeside, Cal., labeled as taken on a man and in 
a chicken house; 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, Jxrodes 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): D. americanus authors (not 
L.); D. electus Koch, 1844; Ixodes albipictus Pack. (Ist Peabody Acad. Rept., p. 66, 
not Guide and Am. Nat.); J. quinquestriatus Fitch, 1871; I. robertsoni Fitch, 1871; J. 
punctulatus Say, 1821(?). 
This species is distinguished by the finely punctate stigmal plate 
(see Pl. IV, fig. 5). Itis 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 
Rhipicephalus sp. are the common ticks on the dog, which is also the 
case with J. scapularis in Florida. Neumann records a male taken 
on a rabbit, Lepus callotis, by Dugés, at Guanajuato, Mexico. Cattle 
also serve as hosts. 
Prof. H. 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: 
Taste XII.—Oviposition of Dermacentor variabilis. 
Number of eggs deposited— 
| ; feet ae V ce feat (ceo) Caunimice ela adn 2c) ae ea 
SSS SISA SS SSS SAN AA A lalala ee 
Be |e |. be | Br] eae) Be] bs fe tt bbe | Bes des | eae endl enc le es ee acai 
AlS/S 2/25 /S/S/S/a ale alas lala aj |3/3/¢ 
32 | 72 ce 232 2ol 320 ie 246 217 |257 |235 |253 153 35 104 34 | 6;| 01 }-0 | 0 | (a) 2802 z 
(ecm | Pere eal 
aDead. 
