The lower classes of animals, of ephemeral existence, are found on every living or vegetating body. Of _Coleoptera_ were observed: two species of Pimelia (longipes), one of Cetonia, of Copris (Isidis), of Erodius (gibbus), several Staphylini and one Gyrinus. Of _Orthoptera_: Locusts, Blattidae, Mantidae, Truxalidae. Of _Hymenoptera_; several bees, especially at Killulloo, one of which, marked with light brown segments on the abdomen and bearing a long sting, was exceedingly annoying. Of _Piezata_: many different ants. Of _Diptera_ and _Hemiptera_: several species. Of _Lepidoptera_: two species of Papilio and several of moths; and it was a matter of great wonder whence these butterflies obtained food in a country where even one flower could not be discovered. Of _Myriapoda_: one Iulus, and several Scolopendra. _Arachnida_ were in great numbers: Mygale, Epeira, Lycosa, and one small Androctenus. Of _Crustaceae_: near the sea-shore a Pagurus existed in astonishing numbers, and in the sweet waters a Daphnia. _Vertebrata_ were still scarcer; and the _Reptilia_ had their representatives in the three orders Saurii, Ophidii, and Batrachii. A small lizard, very agile, existed under stones; also serpents, Vipera and Coluber, and in moist places Bufo and Rana. Amongst the Birds-- Of _Rapaces_: Perenopterus and Falco are numerous. Of _Gallinacea_: Numida meleagris, and various partridges. Of _Cursorii_: Struthio-camelus and Otis. Of _Ciconidae_: Ciconia Marabu. Of _Cantores_: Corvus, Loxia, Sylvia, Vidua. Of _Mammalia_, three species of Antelope, one of Hyrax, one of Equus (Onager), one of Sus (Phacochaerus); and fresh holes in the sand indicated the presence of animals most probably of the order Rodentia. The sheep of the country are the Hejaz lamb (Ovis aries laticaudata); white body and black head and neck, covered with hair, and having thick, short, fat tails; male without horns. The goats and cattle are generally small in stature, of all colours, and surmounted with very large horns. The shepherd dogs are small, and spotted with yellow and white; they have long pointed skulls like the fox. With regard to the flora of this part of the country, the small quantity found in flower, belongs, with few exceptions, to the family of the _Leguminosae_, amongst which the order of _Mimoseae_ is the most extensive both in species and specimens; they are however all stunted and shrubby, and seldom attain any size. Still the only fuel and shade found during the journey was supplied by this tribe. There exist also several _Capparideae_; Cadaba, Sodada, Capparis. Cadaba rotundifolia is the most common. The _Asclepiadeae_ are represented in the Stapelia pulvinata, which however was seldom found in blossom, and in the Pergularia tomentosa, with stately flowers and capsules.