86 Proceedings of the Royal Physical Society. 



somewhat inexplicable since practically all these examples seem to be 

 newly emerged. The sexes of this species have not yet been taken together 

 in Britain. 



List of Species taken in 1909. 



During the past year the Ceratophylli of birds have been principally 

 investigated, but one or two other Siphonaptera were secured, and these 

 are mentioned here. With regard to the actual records — the number 

 and sex of fleas taken have been carefully noted. Where the note 

 "abundant" occurs, the numbers were to be reckoned in hundreds. 

 "Swarming" has been sparingly used, and denotes an estimate of 1000 

 and upwards. The numbers in one case where the term is used are 

 given above. County names appear (in brackets) with the first mention 

 of a locality, but not afterwards. The generic names of hosts are at 

 first given in full, later as initials only. All specific names are italicised, 

 and where no genus is indicated Ccratophyllus should be understood. 



PULEX IRRITANS, L. 



$. Kincraig (Invernesshire), "by sweeping," P H. Grimshaw, 5-20 : vii : 09. 

 $. Domestic Cat, Kinneff (Kincardineshire), J. R. Fraser, 4 : x : 09. 

 <J. Ollaberry, Shetland, 10 : ii : 10. 



Ctenocephalus erinacei, Bouche. 



2 $£ and $, on Hedgehogs (Erinaceus eiiropceus), Colinton (Midlothian), J. M. 

 Bruce, 5-1 6 : vii : 09. Two of these animals were chloroformed, thoroughly 

 examined, and released apparently none the worse — which suggests a 

 reasonable way of procuring parasites from our useful or harmless 

 mammals. 



Spilopsyllus cuniculi, Dale. 



Both sexes numerous on snared rabbits (Lepus cuniculus), Coventree, nr. Auchinblae 



(Kincardineshire), 13 : iv : 09. 

 4 &$ and 6 ?$. Cat, Kinneff, J. R. Fraser, April-August. 

 <$. Hallhill, Kinneff, on Lepus europmus, 20 : iv : 09. 

 Both sexes on Lepus timidus, Black Hill, Pentlands (Midlothian), A. Menzies ; 



also ib. on L. cuniculus, 11 : ix : 09. 

 Both sexes on domestic Cat, and L. cuniculus, Dunskeig Farm, Clachan, Kintyre, 



J. M'Dougall, 1st week Jan. 1910. 

 »S'. cuniculi. Dale, has now occurred in Scotland on all three of the British species 



of Lepus. 



Ceratophyllus fasciatus, Bosc. 



Abundant on Ferret (Muslela putorius domesticus), and in nest, Lochhead, 



(Fifeshire), J. Brown, 25 : v : 09. 

 2 ?$. Howletburn, Galston (Ayrshire), on Mus decwmanus, 25 : vi : 09. In some 



numbers again in August ; but a series of rats sent were clean. — J. 



Gloag. 

 ?. 300 yds. from foot of 30 fm. shaft, Croft Head Pit, No. 5, Fauldhouse (W. 



Lothian), on M. decumanus, 31 : viii : 09. 



