18 



Europe and Siberia, and the two faunas may therefore be assumed to 

 have mixed at a recent date by way of Eastern Siberia and Alaska. 

 In a hst of the latter it is noteworthy that none of the European species 

 are at present known from Asia. 



In the more northerly parts of the region the dominant group is the 

 subgenus Ochlerotatus of Aedes. The species of Anopheles that occur 

 are all of the typical subgenus. Further south Ochlerotatus rapidly 

 disappears and begins to be replaced in part by species of Citlex and 

 in part by other subgenera of Aedes, while the Anophelines of the 

 subgenus Myzomyia become numerous. 



In dealing with the classification of the Culicidae the genera have 

 been defined on characters that have no relation to sex and that do 

 not depend on the superficial characters of the scales. Several of the 

 new distinctions employed are to be found in the thoracic chaetotaxy. 



Keys are given to the adults and larvae of Anopheles {Anopheles) 

 and Anopheles {Myzomyia) ; to the genera of the Culicines ; to the 

 adults and larvae of Theobaldia, as well as to the three subgenera 

 Theohaldia, Culicella and Allotheohaldia ; to the subgenera of Aedes; 

 to the larvae of the species oi Aedes {sens, lat.) ; to the adults of Aedes 

 {Ochlerotatus), Aedes {F inlay a) and Aedes {Stegoniyia) ; and to the 

 adults and larvae of Ciilex, indicating in the case of the adults the sub- 

 genera as well as the species. In the case of all the keys to species, 

 except that to the species of Anopheles {Myzomyia), a second key 

 based on the male hypopygium is given as well as the one based on 

 other characters. 



The new species described are : Anopheles {Anopheles) elutus, 

 which was previously recorded as A. maculipennis var. [R.A.E., B, 

 ix, 98, 159], but which entirely replaces A. maculipennis in Palestine, 

 Lower Mesopotamia and Transcaspia, though in Macedonia the two 

 occur together; A. {A.) punctibasis from Japan; Aedes {Ochlerota- 

 tus) freyi from Finland and Germany ; A. {0.) albescens from West 

 Siberia ; A. {0.) parvulus from Finland ; A. {Stegoniyia) cretinus from 

 Crete ; Lutzia vorax, the larvae of which were found in old cesspits 

 preying upon Culex fatigans, from Japan and North India, and pro- 

 bably widely distributed in the Oriental region ; and Ctdex {Culex) 

 orientalis breeding in rice fields in Japan. Anopheles {Myzomyia) 

 turkhudi var. persicus, n., is described from East Persia (the typical 

 A. turkhudi inhabiting adjacent areas in the Punjab). Barraudius, a 

 new subgenus of Culex, is also described, the type species being 

 C. pusillus, Macq., and C. modestus, Fie, being the only other included. 



Among the species in which changes in or additions to the synonymy 

 are made are : Anopheles {Anopheles) algeriensis, Theo. {lukisi, 

 Christ.) ; A. {A.) bijurcatus, L. {claviger, Mg., antennattis, Beck.) ; 

 A. {A.) maculipennis, Mg. {claviger, F., nee Mg., occidental-is, D. & K., 

 lewisi, Ludl., selengensis, Ludl.) ; A. {A.) mauritianus, Grp. {paludis, 

 Theo.) ; A. {Myzomyia) superpictus, Grassi {palestinensis, Theo.) ; 

 Theobaldia {Alio theobaldia) longiareolata, Macq. {Culex annulatus 

 var. marocanus, d'Anfr.) ; T. {Theobaldia) glaphyroptera, Schiner 

 {bcrgrothi, Edw.) ; T. {T.) alaskaensis, Ludl. {siberiensis, Ludl., arctica, 

 Edw.) ; T. {Culicella) fumipennis, Steph. {ficalbii, Noe) ; Orthopodo- 

 myia pulchripalpis, Rond. {albionensis, MacGr.) ; Aedes {Ochlerotatus) 

 dorsalis, Mg., nee Theo. et al. {maculiventris, Macq., curriei, Coq., 

 broquettii, Theo., grahami, Ludl.) ; A. {0.) lutescens, F. {cyprius, 

 Ludl.) ; A. {0.) alpinus, L., {innuiius, D. & K., nearcticus, Dyar) ; 

 A. (0.) sticticus, Mg. {concinnus, vSteph., nigripes var. sylvae, Theo., 



