. Circular. Insect pests; Insect pests. them. This can not come from any pain caused by the placing of the eggs on the animals, but must be from an instinctive dread of the insect, and is analogous to the similar frantic actions of the liorse when approached by the throat hot. The injury to fattening range cattle in the spring is due very largely to the annoj^ance occasioned by the presence of the fly. A Texas correspondent, Mr. George W. Holstein, calls attention to this fact as follows: "A cow quietly grazing will suddenly spring forward, throw up her tail, and make for the nearest wate
. Circular. Insect pests; Insect pests. them. This can not come from any pain caused by the placing of the eggs on the animals, but must be from an instinctive dread of the insect, and is analogous to the similar frantic actions of the liorse when approached by the throat hot. The injury to fattening range cattle in the spring is due very largely to the annoj^ance occasioned by the presence of the fly. A Texas correspondent, Mr. George W. Holstein, calls attention to this fact as follows: "A cow quietly grazing will suddenly spring forward, throw up her tail, and make for the nearest water at a headlong gait. Seem- ingly deprived at the moment of every instinct except the desire to escape, she will rush over a high bluff if in the way, often being killed. Fig. b.—Hypoderma lincata: a, eggs attached to hair; 6, c, d, dorsal, ventral, and lateral view of egg; f, eiiibryonic or first larva, as seen in egg; /, g, mouth parts of same enlarged; fi, anal segments of same still more enlarged (from Insect Life). by the fail. This, with miring in water holes and the fact that cattle are prevented from feeding, causes the ; As observed in the act of egg-laying, the flies approach the cattle very swiftly, being almost too quick in flight to be observed except at the very moment of placing the eggs. The eggs are fastened to the hairs, in the examples received here, usually four to six together. The structure of the lower portion of the egg is of such a nature that it clasps the hair almost entirely and forms a very firm and strong attachment. The peculiar shape of the egg is shown in the illustra- tion (fig. 5). In length it measures about two millimeters, and is of a dull yellowish-white color. The ovipositor, extended as in the act of placing the egg, is represented in fig. 6. The eggs once in position, the larva^ probably ratlier than the eggs, are carried into the mouth by means of the licking of the leg and the. Please note that these images are extracted f
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