It is remarkable that fish are caught not only in the open streams of Media, but also in the _kanats_ or underground conduits, from which the light of day is very nearly excluded. They appear to be of one sort only, viz., barbel, but are abundant, and often grow to a considerable size. Chardin supposed them to be unfit for food; but a later observer declares that, though of no great delicacy, they are “perfectly sweet and wholesome.” Of reptiles, the most common are snakes, lizards, and tortoises. In the long grass of the Moghan district, on the lower course of the Araxes, the snakes are so numerous and venomous that many parts of the plain are thereby rendered impassable in the summer-time. A similar abundance of this reptile near the western entrance of the Girduni Siyaluk pass induces the natives to abstain from using it except in winter. Lizards of many forms and hues disport themselves about the rocks and stones, some quite small, others two feet or more in length. They are quite harmless, and appear to be in general very tame. Land tortoises are also common in the sandy regions. In Kurdistan there is a remarkable frog, with a smooth skin and of an apple-green color, which lives chiefly in trees, roosting in them at night, and during the day employing itself in catching flies and locusts, which it strikes with its fore paw, as a cat strikes a bird or a mouse. Among insects, travellers chiefly notice the mosquito, which is in many places a cruel torment; the centipede, which grows to an unusual size; the locust, of which there is more than one variety; and the scorpion, whose sting is sometimes fatal. The destructive locust (the _Acridium peregrinum_, probably) comes suddenly into Kurdistan and southern Media in clouds that obscure the air, moving with a slow and steady flight and with a sound like that of heavy rain, and settling in myriads on the fields, the gardens, the trees, the terraces of the houses, and even the streets, which they sometimes cover completely. Where they fall, vegetation presently disappears; the leaves, and even the stems of the plants, are devoured; the labors of the husbandman through many a weary month perish in a day; and the curse of famine is brought upon the land which but now enjoyed the prospect of an abundant harvest. It is true that the devourers are themselves devoured to some extent by the poorer sort of people; but the compensation is slight and temporary; in a few days, when all verdure is gone, either the swarms move to fresh pastures, or they perish and cover the fields with their dead bodies, while the desolation which they have created continues. [PLATE III., Fig. 2.] [Illustration: PLATE III.]