F. C. Bishopp and H. P. Wood 
155 
In the present paper the authors present biological notes on albi- 
pictus, hunteri and nigrolineatus. 
The work upon which this paper is based was done under the 
auspices of the Bureau of Entomology, United States Department of 
Agriculture, in the section of Southern Field Crop Insect Investigations, 
in charge of Mr W. D. Hunter. To Mr Hunter we ar’e indebted for aid in 
the carrying on of the investigations and for helpful suggestions. Our 
thanks are due to Mr W. V. King, of the Bureau, who has made notes 
on the occurrence of this species in the Bitter Root Valley in Montana, 
and collected some of the material used in our work. We wish to 
express also our appreciation of aid contributed by Professor R. A. 
Cooley, of the Montana Experiment Station, for records of collection 
and specimens from several localities in Montana. No little assistance 
has been afforded by many correspondents who have forwarded 
material and made records for us on ticks in several localities. 
Dermaeentor hunteri 1 Bishopp. 
Distribution. 
This species has been taken only in Arizona, near Quartzsite, and 
Supai. The type is from the former locality. There the hosts, 
mountain sheep, range from the higher points of the mountains (about 
3000 feet altitude) to the Colorado river (altitude 200 feet) where, 
according to statements by Mr George Hutson, they may be found 
watering in June and July. All of the specimens collected were found 
on hosts taken between 1500 and 2500 feet altitude. Mountain sheep 
have not been examined for ticks in other localities, hence the distribution 
of this species is not definitely known. 
Hosts. 
The type host, the mountain sheep (Ovis canadensis gaillardi 
Mearns), is the only animal upon which this tick has been collected. 
No specimens of this species were found as a result of examinations of 
other animals, including domestic stock, in the locality where the tick 
was found. None of the immature stages of the species have been taken 
in nature, but it is probable that they engorge on small wild mammals. 
In the laboratory the larvae, nymphs and adults were fed on 
guinea-pigs. Two slightly engorged females, collected on mountain 
1 The mountain sheep tick is suggested as a common name for this tick, as this 
appears to be the principal, if not The only, host of the adults of the. species. 
11—2 
