.152 Fleas of Eastern United States 



PLATE XII 



Figure 



56. Ceratophyllus celsus Jordan, male genitalia. 



57. Idem, receptaculum seminis and sternite VII. 



58. Ceratophyllus diflinis Jordan, receptaculum seminis and sternite VII. 



59. Idem, male genitalia. 



60. Ceratophyllus idius Jordan and Rothschild, receptaculum seminis and 

 sternite VII. 



61. Idem, male genitalia. 



