54 
NoKTJI AMERICAN FEVEB TICK AND OTHEE SPECIES. 
molting nymph taken on a Paradoxurus by Forbes in the Malaysian 
archipelago. Lahille report- it from Argentine Republic. During the 
pasl two years n has been collected in Texas b^ agents of the Bureau at 
eight different times from rabbits and hares. The species seems to be 
generally restricted to the genus Lepus, but two instances of other 
hosts Laving been recorded and these probably accidental. On the 
rabbit the ear .seem- a favorite place for attachment. As a more 
extensive collection of the tick is made it will undoubtedly be found 
to occiif in a much greater territory than is now known. A few note- 
on the life history of this species have been made by us. 
Tabi i: XIII. Oviposition of Haemaphysalis leporis-palustris. 
Number of eggs deposited 
Total. 
M 
20. 
May 
21." 
■22. 
May 
- 
May 
24. 
25. 
May 
26. 
May M 
27. 28. 
May 
29. 
:.U. 
May June 
31. 1. 
June 
- . 
260 



110 

47 

228 
2 
70 

140 
39 
48 

131 
8 
43 
7 
98 
7 
29 
17 
72 
3 
22 
22 
4 
(1 
14 12 
21 13 

(«) 
14 
4 



(«) 
1.112 
i 
99 
7 
9 
13 
5 
7 
1 
(a) 
a Dead. 
Table XIV. — Period of incubation and longevity of Haemaphysalis leporis-palustris. 
Eggs depos- 
ited. 
Hatching ■SSiST 
commence! tl( £ c p t[ od . 
Remarks. 
May 20-23 
M 1 24-29 
September 2-5 . 
June 20 
June 23 
September 20 . 
■11 
30 
24 
March .">. dead. 
March ."). dead. 
May 11. dead. 
Subfamiiy IXODINJE. 
Three genera of this subfamily, Ceratixodes, Ixodes, and Ambly- 
omma. are represented in the fauna of the United States. They may 
be readily distinguished. The Ixodes have long club-shaped palpi, 
the form of the third segment being typical of the genus (see PL III, 
fig. 4). The male and female have only the firsl coxae provided with a 
spine of varying size; the anal groove surrounds the anus anteriorly", 
opening posteriorly; eyes are present. In Amblyomma the palpi are 
long but cylindrical; the male has a long spine on the first and fourth 
coxa3, while in the female only the first 
cox;;' 
have spines, the others 
possessing tubercles; the anal groove surrounds the anus posteriorly 
and opens anteriorly. Ceratixodes, with pointed palpi, occurs on sea 
birds. 
Genus IXODES. 
The Castor Bean Ticks.) 
Previous to 1796 all ticks were placed tinder the Linmvan genus 
Acarus. In thai year Latreille erected the genus Ixodes, giving /. 
nanus as the type species. For many years following all ticks 
