1949] 
Dinnih and Zumpt — RhipicephalincE 
11 
Krobylophoren. Zeitschr. Morph. Oekol. Tiere, vol. 38, pp. 
379-419. 
1942b. Die Biickensinnesfelder (foveae dorsales) der Zecken. Zeitschr. 
Morph. Oekol. Tiere, vol. 39, pp. 1-20. 
Vitzthum, H. 
1943. Acarina. In Bronn’s Klassen und Ordnungen des Tierreiches, 
vol. 5, section IY, book 5, part 3, p. 363. 
Zebrowski, G. 
1926. A preliminary report on the morphology of the American dog 
tick. Trans. Amer. Ent. Soc.-, vol. 51, pp. 331-369, Pis. 12-14. 
