OF NORTHUMBERLAND AND DURHAM I09 



MAMMAL-FLicAS (other tliaii Bat-fleas), 5 species. 



Xenopsylla cheopis Roths. (1903). 



The plague flea. '• A scarce vagrant to the British Isles, 

 introduced by port-rats. Occurs on the black rat {Epitiiys 

 rattiis) and the brown rat {E. norvegictis). Recorded from 

 Plymouth and London." 



Cerafophyllus londiniensis Rotiis. (1903). 



Allied to C. fasciatus. " A rare Mediterranean species, 

 probably introduced by port-rats; has occurred on the house 

 mouse {Mils musculus) and possibly on the brown rat {Epimys 

 nofvegicus), in London, Dover and i\.berdeen." 



Rhadinopsylla isacauthiis Roths. (1907). 



" Very rare, and not recorded from Scotland or Ireland. A 

 few examples were taken at Lyndhurst, New Forest, from the 

 bank vole {Evotomys glareolus)^ and a few at Abinger 

 Common, near Dorking, from the same host, and from the 

 mole {Talpa europcBa)." 



PalcEOpsylla koliauti Dampf (1907). 



"A rare species in England and Scotland, not recorded 

 from Ireland. It occurs on the mole {Talpa europcBa)." On 

 the Continent another species, P. similis Dampf, occurs on 

 the mole, and may be expected to be found with us, 



Typhloceras poppet Wagn. ( 1 903). 



" A rare species in England and Scotland. Also found in 

 Ireland. The usual host is the long-tailed field mouse 

 {Apodetnus sylvaticus) ; but it has been found on the house 

 mouse {Mus musculus) in the Shetlands." 



BAT-FLEAS, 5 SpCcieS. 



Ischnopsyllus elongatus Curtis (1832). 



Has occurred in Yorkshire. " Apparently confined to the 

 noctule bat {Nycfalus riochila). It is common in England, 

 but unrecorded from Scotland and Ireland." 



