144 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
Although this species does not appear to have been taken 
apart from its host, yet it looks quite capable of leading a 
free existence. 
Hiner 
Fig. 
Fig. 
Fig. 
Hie. 
Fig. 
Fig. 
Fig. 
Fig. 
a Gis ou aera a 
EXPLANATION OF THE PLATE. 
Leptopsyllus herdmani, n. sp. 
Female seen from above. x 106. 
Antennule of female. < 500; 
Antenna. <. 500. 
Posterior foot-jaw. x 500: 
First pair of swimming feet. x 500. 
Second fe 7. x 500. 
Fourth . a x 500. 
Fifth is . x 500. 
Last two segments of abdomen and caudal stylets. 
x 260. 
