_F. peregrinator_ (_atriceps_), the Shaheen or Royal Falcon, of India, Ceylon, and Tenasserim, distinguishable by the deep ferruginous under surface and the general absence of barring, is much prized by natives for hawking, as is the docile but delicate and less courageous Lanner (_F. feldeggi_ or _tanypterus_) by the Bedouins. The latter is buffish-brown, with ruddy crown and nape, a grey tinge towards the rufous-barred tail, and fawn-coloured lower parts with brown spots; it ranges from Loango and Unyamuesi in Africa as far as South Europe and Persia, and lays four eggs–lighter than those of the Peregrine–in rocks, ruins, or disused birds' nests, the Dashoor Pyramid being a well-known site. _F. biarmicus_, a close ally from South Africa, is nearly spotless below. Of the genus _Gennaea_ or "Desert Falcon," _G. sacer_ (_lanarius_ or _milvipes_), the Saker, found from North Africa and East Europe to North China, has brown upper parts mottled with fulvous, whitish crown, nape, and lower surface streaked with brown, and white markings across the tail. A swift and fairly bold denizen of open country, it is used for bustard-, gazelle- or heron-hawking by Indians and Arabs, while it also preys on hares, birds, and lizards. It deposits three or four rather pointed white eggs, blotched or spotted with various shades of red, in a nest of sticks and grass, normally placed in a tree. _G. jugger_, the Luggur of India and Afghanistan, differs in being greyer above and less streaked below, with rufous crown and nearly uniform tail, whereas _G. mexicana_ (_polyagrus_), the Prairie {180}Falcon of Mexico and the western United States, has the head brown. _G. hypoleuca_, of Australia, is grey and black, with barred tail, and dusky shaft-streaks on the whitish lower parts; _G. subnigra_ of the same country being almost plain blackish-brown.