56 PLATE XIII 



REGEPTACULUM SEMINIS OF BRITISH BIRD FLEAS 

 AND MAMMAL FLEAS 



(x 165) 



Ceratophyllus garei Cnatophyllus borealis 



(from carrion-crow) (f^om rock-pipit) 



Monopsyllus sciurorum Ceratophyllus columbae 



(from red squirrel, for l^om rock-dove) 



comparison with a and b) 



f 



Hoplopsyllus glacialis Ormthopsylla laetitiae 



(from Artie hare; not British, (from puffin) 



for comparison with/) 



Dasypsyllus gallinulae Omeacus rothschildi 



(from skylark) (from house-martm) 



