Genus III. BIBLIS. 



Type. 



Bihlis, Lesson, Compl. Buff. viii. p. 495 (1837) B. rupestris. 



Ptyonoprogne, Reiclienb. Syst. Av. pi. Ixxxvii. fig. 6 (1850) ... 5. riqjestrln. 

 Ki'imnochelidon, Tickell, teste Walden, Ibis, 1876, p. 376 . . . . B. concolor. 



Range. From North-eastern and Equatorial Africa^ through Palestine and Persia to Central Asia, the 

 Indian Peninsula, and the Burmese countries. 



Clavis specie7'um. 



a. Guttur et prsepectus pallide isabellina aut arenarea in colorem abdominis vix 



saturatiorem mergentes. 

 a'. Major: saturatior : ala 4'9 poll. : mentum minute brunneo maculatum . 1. ritjjestns, yi. {)[). 

 b'. Minor: pallidior : ala minime 6'0 poll. : mentum baud maculatum . . 2. obsoleta, p. 111. 



b. Guttur et prsepectus rufescentes : abdomine fumoso. 



I 3. fidiyula, p. 1 15. 

 c'. Majores : guttur rut'esoens, unicolor ^ 4. anderssoni, p. li!». 



[ 5. rufigula, p. I'Jl. 

 (f. Minor: guttur sordide rufescens, brunneo striolatum G. convolor, \).\'l'^. 



