LITERATURE ON TICKS 677 



About a dozen or more larvae may be kept in each tube. In some cases 

 it may be necessary to keep the ticks in a moist atmosphere ; in this 

 case they should be placed in pill boxes kept in moist sand. This is 

 very necessary in the case of certain species of Aponomma, or the eggs 

 often fail to hatch ; it is best to allow them to oviposit in sand. 



Ticks should never be placed in corked tubes or they will bury them- 

 selves in the cork, or between the glass and the cork ; this is specially 

 likely to happen in the case of larvae. 



Ticks for identification should be sent either to Professor Neumann or 

 Professor Nuttall, whose addresses are given below. The specimens 

 should be placed in seventy per cent alcohol, and a label giving details 

 of host, locality, etc., written in pencil placed inside the tube. 



Professor L. G. NEUMANN, 



Ecole Nationale Veterinaire, 

 Toulouse, 



France. 



Professor GEORGE H. F. NUTTALL, F. R. S., 



Quick Laboratory, 



Cambridge, 

 England. 



LITERATURE 



As a complete Bibliography (see below) on ticks has recently (July, 1911) been published by 



Nuttall and his co-workers, only references to papers and monographs which the authors 

 ' have found useful in the preparation of this chapter are given below ; for references to the 



other works dealing with ticks the worker should consult Nuttall's Bibliography. The 



worker should consult also the recent volumes of Parasitology, which contain numerous 



papers on ticks : 



ALLEN, W. E. Internal Morphology of the American Cattle Tick. 



Studies from the Zool. Lab., University of Ne- 

 braska. No. 67. 1905. Contains a good account of 

 the anatomy of Margaropus annulatus ; the illustra- 

 tions are poor. 



ARAGAO, H. de B. Beitrage zur Systematik und Biologic der Ixodidae, 



Memorias do Institute Oswaldo Cruz, Tome IV, 

 Fas. 1, 1912. 



BANKS, N. A Revision of the Ixodidae, or Ticks, of the United 



States. U- S. Dept. of Agricult., Bureau of Ento- 

 mology, Technical Series, No. 15, 1908. Contains a 

 well illustrated account of the ticks of the United 

 States. 



