ILLUSTRATIONS 



(Figs. 4-13) 



Figure 4. — Side view of heads: A, Trichopsylloides oregonensis, male; B, Rho- 

 palopsyllus gwyni, male; C, Conorhinopsylla stanfordi, male; D, Arctopsylla, 

 ursi, male ; E, Chaetopsylla lotoris, female. 



4G7459— 43 9 129 



