192 MR. RICHARD S. BAGNALL ON THE SIPHONAPTERA 



Ceratophyllus styx Roths. (1900). 



Swarming in nests of sand martins at Winlaton Mill, 

 Blaydon, Wylam, Hexham, Blanchland and near Harbottle. 



"Very common in the nests of the sand martin {Cofile 

 riparia); occasionally found in numbers in the nest of the 

 dipper {Cinches aqiiaticus). Not recorded from Ireland." 



Ceratophyllus hirundinis Curtis (1826). 



In nests of the house martin. Well over a hundred 

 specimens in a nest from Stocksiield, August nth, 191 1, and 

 about two hundred examples from another nest taken at 

 Dilston Farm, near Corbridge-on-Tyne, in the same month, 

 and from which latter nest two to three hundred further 

 examples were reared in the following September and October. 

 This nest, in addition to three other species of flea, also 

 harboured several well-grown larvae of the Dermestid beetle 

 Attagenus pellio and a few examples of the curious 

 Hippoboscid fly Stenopteryx hirundinis. 



This flea has also occurred at Stanhope and Edmund- 

 byers. 



" Common and widely distributed in the nests of the house 

 martin {Cheltdon nrlrica). Not recorded from Ireland." 



Ceratophyllus rusticus Wagn. (1903). 



:=_paiii?nbi Dale (partim) ; dalei Rothsch. 



(1903)- 



29 examples, both sexes, from a nest of the house martin, 

 Dilston Farm, Corbridge, August 191 1, and others reared 

 later. 



" A more or less rare species found in the nests of the 

 house martin. Not recorded from Ireland." 



Ceratophyllus farreni Roths. (1905), 



Also from hou.se martins' nests ; 37 in a nest from Stocks- 

 field, and only 4 in a nest from Dilston Farm where this 

 species seemed to be replaced by C. rusticus. 



" A fairly common species in the nests of the house martin. 

 Not recorded from Ireland." 



