58 THE DIPTEKA OF GUERNSEY. 



The Hippoboscidoe are parasitic on animals and birds, and 

 include the sheep tick, Melophagus ovinus, which is found 

 amongst the wool of sheep, and Stenopteryx liirundinis, which 

 is attached to swallows and martins, remaining in their nests 

 throughout the winter. 



The Nycteribidce are curious wingless creatures, but pos- 

 sessing halteres, and are parasitic on bats. 



In the last family, that of the Braulidee, there is only a 

 single species, Br aula cceca, which is exceedingly minute, 

 and is parasitic on the honey bee. 



All the species on the list have been captured by myself 

 in Guernsey, most of them during the present year (1895). 

 They form only a small proportion of those which exist on the 

 island, several large families comprising numerous species 

 being entirely unrepresented. It, however, includes many of 

 the largest and more conspicuous species, and although it is 

 intended only as a provisional list, subject to revision, it will 

 fill up a gap in our recorded island fauna, no list of the 

 Diptera of Guernsey having hitherto been published. 



One species, Hyetodesia carlo, Schiner, is not recorded as 

 British, and several others are rare or scarce. Of these 

 Epitriptus cingulatus, F., Syrphvs yrossularice, Mg., Eumerus 

 lunulatus, Mg., and Lucina fas data, Mg., are especially worthy 

 of note. 



In Ansted's " Channel Islands " a list of 35 species of 

 Diptera is given for Jersey. These were collected by Mr. 

 Piquet, and named by the late Mr. Francis Walker, F.L.S. 

 There are a great many printer's errors in this list. These 

 have been corrected, and the names according to Verrall's 

 list placed opposite each species. I have inserted the list at 

 the end of the Guernsey one for purposes of comparison. 



I must here express my deep obligation to the Rev. E. 

 N. Bloomfield, M.A., F.E.S., of Hastings, who has kindly 

 examined and named most of my captures ; also to Dr. R. H. 

 Meade, of Bradford, who has named several species belonging 

 to difficult families, of which he has made a special study. 



DIPTERA. 

 pulicid^:. 



Pulex irritans, L. Common. 



P. faseiatus, Bose. Several specimens found on a long -tailed field mouse, 



captured near the Vale coast. 

 P. melis, WUc. Common. 

 P. eanis, Buges. Abundant. 



