194 ^IR* RICHARD S. BAGNALL ON THE SIPHONAPTERA 



{Turdus viscivorus) and yellow hammer {Emberiza citrinella), 

 Fatfield (VV. Hall). Several records without data. Rothbury on 

 dipper {Ci/ichis aqi/aficus), July 1906 (in coll. Rothschild). 



"Very common in England and Scotland in the nests of 

 most birds, and in hen-houses. Not recorded from Ireland." 



Ceratophyilus fringillae Walker (1856). 



In nests of the house sparrow and hedge sparrow, Win- 

 laton, Fatfield, Penshaw. On a man (!) Fatfield. Two 

 examples in a swift's nest from Newcastle submitted by Mr. 

 Alaric Richardson. 



" Fairly common in the nests of the house sparrow, also 

 on other passerine birds. Not recorded from Ireland." 



B. MAMMAL-INFESTING SPECIES 



Ceratophyilus fasciatus Bosc. (1800). 



Common in a rat's nest, Fatfield (W. Hall); also at Gib- 

 side, infesting rats and house mice. 



"Generally common in the British Islands. The chief 

 hosts are the Norway rat {Epimys norvegicus) and the house 

 mouse {Afns juusadns). More rarely examples have been 

 found on several species of field mice and on the weasel 

 {Afusfela /livalis), as well as the stoat {Miisfela ermi/iea)." 



Ceratophyilus sciurorum Schr. (1S03). 



One specimen on a stoat, Wylam-on-Tyne (Douglas 

 Clague); one on a fox, Houghton-le-Spring, and common on 

 squirrels, Gibside. Presumably common on squirrels through- 

 out the area. 



" Common in England, Scotland and Ireland on the 

 squirrel {Scwrus vi/Igar/s), the dormouse {Miiscardiinis 

 avellanarms), and occasionally on the pine marten (A/nr/fs 

 m jrtes), the stoat, and the weasel." 



Ceratophyilus penicilliger Grnbe (1852). 



In small rodents' nests, Gibside, Hollinside and Fatfield. 

 In moles' nests, Bradbury, and on the Irthing. 



"A common species in England and Scotland; not 

 recorded from Ireland. Has been found on many hosts." 



