ADDITIONS TO THIRD EDITION 



Chapter 7: Fleas (Aphaniptera). 



The hen stick-tight flea {Echidnophaga gallinacea) has been recorded by 



Thompson (1952) on a migrating White Wagtail {Motacilla a. alba) a bird 



which winters in Africa, captured at Skokholm Island. (See pages 71, 



84 and 108). 

 Waterson left out of his count 40 aberrant females (Smit, 1955), ^^ there 



were actually 2,408 (59^0) females to 1,672 (41%) males. (See page 79, 



line 21). 

 It is now considered (Smit & Allan, 1955) that C.farreni in North Africa is 



only a variety. A distinct subspecies, however, occurs in Japan and 



China. (See page 85). 

 C. riparius has now been found in Transbaikalia (Smit & Rothschild, 1955), 



which suggests that it spread to the U.S. from the west. (See page 89). 

 Recently C. borealis has been found in moorland districts on the mainland 



of Britain, and several cases of hybrids between it and C. garei have been 



recorded from this habitat. (See page 89, map 2.) 

 Ceratophyllus lunatus has now been found in the nest of Anser leucopsis in Green- 

 land. (See page 95). 

 Ceratophyllus styx has recently been split into two subspecies, both of which 



occur in Britain, C. styx Rothschild 1901 and C. styx jordani Smit 1955. 



Hybrids are produced where the two suspecies meet. (See page 113). 

 Ceratophyllus vagabuna insularis has recently been recorded in Belgium. (See 



page 115). 

 Chapter 9: Protozoa. 

 Baker has recently (1955) found a Plasmodium, probably P. relictum,m 



three rooks, a jackdaw and a blackbird in Hertfordshire. (See page 165). 

 Baker ( 1 955) has recorded five species of Leucocytozoon from birds in Hert- 

 fordshire, namely L. majoris, L. sakharoffi, L. marchouxi, L. dubreuli and 



L. danileuskyi. (See page 169). 

 Recently Baker (1955) has discovered thsit TrypanosojJia avium is transmitted 



by the louse-fly Ornithomyia aviculariaj in which it undergoes cyclical 



development in the gut. Birds become infected by ingesting infective 



louse-flies. (See page 172). 



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