. Eyes and no eyes. e hurtful than thecommon fly or the blue-bottle. Theseare the Gad-flies and the know one of tlie small Gad-fliesquite well, for it drops on our hands,or our neck, ^vhen we are sitting outof doors, and lets us know that it isthere, by giving a sharp bite to suckour blood. We call it the Horse-flybecause it teases the horses so muchin summer; but there are manj^othersAve do not know so well. The largestEnglish Gad-fly (4, p. 61) is about aninch long. The Bot-flies are more dangerousthan the Gad-flies, for instead ofbiting with their mouths they prick with a shar
. Eyes and no eyes. e hurtful than thecommon fly or the blue-bottle. Theseare the Gad-flies and the know one of tlie small Gad-fliesquite well, for it drops on our hands,or our neck, ^vhen we are sitting outof doors, and lets us know that it isthere, by giving a sharp bite to suckour blood. We call it the Horse-flybecause it teases the horses so muchin summer; but there are manj^othersAve do not know so well. The largestEnglish Gad-fly (4, p. 61) is about aninch long. The Bot-flies are more dangerousthan the Gad-flies, for instead ofbiting with their mouths they prick with a sharptube at the end of their abdomen, so as to laytheir eggs under the skin of an animal. TheBot-fly or Warble-fly of the ox (2, p. 61) looks<ery like a humble bee, only she has two wing?instead of four. She has a pointed tube at theend of her body, with w^hich she pricks the skinof the ox, and lays her eggs underneath it. Ina short time the eggs hatcli, and the maggotirritates the flesh so much that large lumps are. TRUNK OF BLOW-FLY WITH THICKLIPS; A. Lancet. 66 INSECT LIFE. seen on the side or back of the animal. If thefarmer does not press out the maggots fromthese himps, and put a proper dressing on them,the beef of the ox will be poor and bad, and nofeeding will make it any better. When the maggotis full-grown it drops to the ground to make itschange. The horse Bot-fly (3, p. 61) does not put her eggsunder the skin, but sticks them, with a little slimefrom her mouth, to the hairs of the horse on hisshoulder or under the knee. When the egg is ready to break, the warmth ofthe horses tongue, as he licks himself, makes itcrack and the grub slips down the horses throatto his stomach. There it feeds, and when it is full-gro^vn passes out with the dung. The way to check this grub is to keep the skinof the horse clean and the hair short. This Bot-fly is rather larger than the House-fly, withbright yellow markings and a very hairy body. I wonder how many grubs you know o
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