2 American Midland Naturalist Monograph No. 1 



are host specific for bats though the bat tick, Ornithodoros stageri, also attacks 

 man readily. Nymphs and adults of O. dunni feed readily on guinea pigs and 

 white rats, and the larvae of O. kelleyi feed on guinea pigs. Species which are 

 found in the burrows and retreats of animals other than bats will apparently 

 attack any available host. Still others have been recorded from restricted lists. 



During recent years a surprising number of new American species have 

 been found on bats. The original one, Antncola marginatus (Banks), was 

 described from Cuba in 1910. The new ones have been described during the 

 past six years. In 1935, Dr. Robert Matheson, of Cornell University, described 

 three from Panama and the Canal Zone and Mr. Allen Mcintosh, of the 

 Bureau of Animal Industry, United States Department of Agriculture, de- 

 scribed one from bat guano from Mexico and Arizona. We have recently 

 described a new species from Utah and Colorado, four others from Southern 

 States and one from Cuba. There are likely still others that infest bats in the 

 United States and probably in Mexico and Central America. We already 

 have larval specimens of undescribed species from Southwestern States of 

 which the adult and nymph are unknown. 



Most of the material studied has been collected by staff members of the 

 Rocky Mountain Laboratory. Dr. Gordon E. Davis, in connection with his 

 studies on Ornithodoros as vectors of relapsing fever, has made many collec- 

 tions in the field and has furnished valuable laboratory-reared specimens. 



The authors wish to express their appreciation for the assistance given by various 

 persons and institutions and especially the following: Dr. Jos. C. Bequaert, Harvard 

 University, for valuable specimens and for bringing to our attention certain items of tax- 

 onomy and synonymy; Dr. Robert Matheson, Cornell University, Dr. William A. 

 Riley, University of Minnesota, Dr. C. A. Herrick, University of Wisconsin, and Dr. 

 W. B. Herms, University of California, for very useful materials and helpful coopera- 

 tion; Drs. B. Schwartz, E. W. Price and Mr. Allen Mcintosh, Bureau of Animal 

 Industry, United States Department of Agriculture, for cooperation and facilities for 

 study while in Washington and for permission to use illustrations from the Seventeenth 

 Report of the Bureau of Animal Industry, for assistance in many ways while the senior 

 author was a visitor at his laboratories and for permission to use his drawings of Aniri- 

 cola coprophilus ; Drs. E. A. Chapin and H. E. Ewing for facilities and assistance while 

 at the National Museum; Dr. F. C. Bishopp, for assistance in locating critical material; 

 Dr. Barbara C. Mclvor for lending very valuable specimens; Dr. Chas. M. Wheeler, 

 Dr. D. E. Howell, and Mr. Thomas F. Kelley for sending ticks en various occasions; 

 Mr. Kenneth E. Stager, Los Angeles County Museum of History, Science and Art, for 

 assistance and materials; Dr. J. M. Linsdale, University of California, for opportunity to 

 study the collection of the Hastings Natural History Reservation; Mr. Robert Holden- 

 ried, for opportunity to study the collection of the Hooper Foundation; Dr. Charles T. 

 Vorhies and Mr. R. A. Flock, University of Arizona, for specimens and assistance; 

 Mr. Robert Traub, University of Illinois, for valuable specimens; Dr. I. Perez 

 Vigueras, for several collections of ticks from Cuba; and Dr. E. Brumpt for especially 

 valuable and critical materials. 



In the tables of collection data the following abbreviations have been used: 

 R.M.L. - Rocky Mountain Laboratory; B.A.I. Bureau of Animal Indus- 

 try, United States Department of Agriculture; U.S.N.M. - - United States 

 National Museum; A - - adult; N. -- nymph; L. — larva; spec. -- specimens. 



