196 MR. RICHARD S. BAGNALL ON THE SIPHONAPTERA 



"Perhaps the commonest species in England and Scot- 

 land, also received from Ireland. It occurs on the brown rat 

 and the house mouse living in fields, and on tlie bank vole, 

 the common shrew and others.'' 



Ctenophthalmus bisoctodentatus Kolen. (1863). 



Common in moles' nests with C. agyrtes as recorded 

 above, and once in a rat's nest, Gibside. One on a field vole, 

 Fatfield (W. Hall). 



" Not common in England and Scotland, and unrecorded 

 from Ireland. Occurs on, and in the nests of, the mole {Talpa 

 europcEo). Very rarely examples are found on the weasel and 

 the polecat {Futorius putorms)." 



Genus RHADINOPSYLLA Jord. and Roths. 

 Rhadinopsylla pentacanthus Roths. (1897). 

 On moles and in their nests, but apparently rare. A 

 few, Bradbury, near Hartlepool and on the Irthing. 



" Fairly common in England and Scotland. Not recorded 

 from Ireland. The chief host seems to be the weasel ; it also 

 occurs on the long-tailed field mouse, on the mole, and some 

 other small mammals." 



Sub-Order FRACTICI PITA. 



Family LEPTOPSYLLID^. 



Genus DORATOPSYLLA Jord. caiul Roths. 



Doratopsylia dasycnemus Roths. (1897). 



Not uncommon in moles' nests, Bradbury, and on the 

 Irthing. 



" Common in England and Scotland. Unrecorded from 

 Ireland. The host is the common shrew {Sorcx ara/ieus)." 



Genus PAL.^OPSYLLA Wagn. (1903). 



Palaeopsyila sorecis Dale (1S78). 

 z=igracilis (parti mj. 

 One ? example on a shrew {Sorex araneus), Fatfield 

 (W.Hall). Another on the same host (II. S. Wallace) and 

 also at Winlaton. 



