404 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 2 



and had at hand several state collections, as well as the national 

 collections. 



In the study of the geographical distribution of the species the 

 writer has attempted to bring these records together. In doing this 

 he has examined the national collections and through the courtesy of 

 Mr. Nathan Banks has also examined his personal collection and 

 been permitted to use the distribution records of the species in the 

 collections which Mr. Banks examined. Most of the records of the 

 species from the different collections are based upon Mr. Banks' 

 determinations. In the following list references are given to Neu- 

 mann's records, so far as possible to the collections which contain 

 specimens, and occasionally to other records. A list of the abbrevia- 

 tions used will be found appended. 



The records of exotic species are largely based upon Neumann's 

 determinations and upon the national collections. References are 

 given to Dr. F. Lahille's records in his work on the ticks of Argen- 

 tina. Dr. H. B. Aragao, who has studied the Brazilian ticks and 

 described a number of new species, has kindly furnished the writer 

 with a list of the species known to him to occur in that country. The 

 writer wishes to express his gratitude to these workers for the liter- 

 ature and other favors received. 



Distribution of American Ticks 



North America — No locality given. 



Amhlyomma multipunctum (N. 1901). 

 Ixodes hrunneus (N. 1901). 



Alaska. 



Ceratixodes putus (B. E. Coll.). 

 Dermacentor variabilis (N. 1901). 

 Ixodes angustus (Bks. Coll.). 



Aleutian Islands. 



Ceratixodes putus (—hirsutus) (N. 1901; Bks. Rev.). 

 Ceratixodes signatus (Bks. Rev.). 



Pribilop Islands. 



Ixodes arcticus (Bks. Rev.; Nat. Mus. Coll.? [Type]). 



St. Paul Island (Alaska). 



Ceratixodes putus (N. 1901 and 1901:; Bks. Rev.). 



Bering Island (near Aleutian Islands). 



Ceratixodes {Ixodes) putus {=fi'mbriatus) (N. 1901; B. E. Coll.). 

 Ceratixodes signatus (B. E. Coll.). 



