Proceedings

Front Cover
 

What people are saying - Write a review

We haven't found any reviews in the usual places.

Contents

Other editions - View all

Common terms and phrases

Popular passages

Page 269 - ... skeleton' leaf. As they grow older, however, they devour all portions of the leaf, and often eat also the petioles and tender stems. Opportunity has not been given to determine the exact length of the larval life of this insect, but judging from observations made, this cannot greatly exceed a week. Parties living in the region where the insect was present in great numbers give ten days as the length of the time in which the chief destruction was accomplished.
Page 356 - Two lateral rows of scales smooth ; first, second, and third gradually increasing in size. Scales more linear than in C. atrox. General color yellowish brown, with a series of subquadrate dark blotches, with the corners rounded and the anterior and posterior sides frequently concave, the exterior convex. These blotches are ten or eleven scales wide and four or five long, lighter in the centre, and margined for one-third of a scale with light yellowish. The intervals along the back light brown, darker...
Page 259 - The hind wings are yellowish gray, with a central dusky spot, behind which are two faint, dusky bands. The head and thorax are rust-red, with an elevated tawny tuft on each. The abdomen is pale brown, with a row of tawny tufts on the back. The wings expand nearly one inch and a half.
Page 339 - Abdominal scutellae from 200 to 235 ; posterior bifid. Subcaudals all bifid. Color brown or black, in quadrate blotches on the back and on the sides, separated by lighter intervals. Abdomen usually coarsely blotched with darker. In one species dark stripes on a light ground. Although very large and powerful, many of the species of the genus are characterized by their extreme gentleness, rarely becoming enraged, even when provoked.
Page 278 - ... the second week of June, while in the latitude of Washington it is seen about two weeks earlier. It appears suddenly in great numbers, as has often been observed and commented upon, but this is in conformity with the habits of other Lamellicorn beetles, eg, our common May-beetles (Lachnosterna), and this habit is still more marked in certain species of Hoplia and Serica.
Page 192 - After taking a reading the observer will remove the pin to the left, and then take hold of the thermometer, about three inches from the top, and spin it around several times, or until the top of the column is brought down to the temperature of the air at the time of observation. Care must be taken not to...
Page 177 - Bull. 5 3 dissipated as where the winds are checked. Hence the value of the windbreak which reduces both the evaporation from the soil and the transpiration from the plant, for transpiration is also accelerated by the motion of the plant under the influence of wind.
Page 280 - These last are at first white, and all the parts soft as the pupa, and they frequently remain in the earth for weeks at a time, until thoroughly hardened, and then, on some favorable night in May, they rise in swarms and fill the air.
Page 355 - ... manner that the apex of the tooth describes the arc of a circle, and finally points downward instead of backward. This protrusion of the fang is not an automatic motion, consequent upon mere opening of the mouth, as formerly supposed, but a volitional act, as the reverse motion, namely, the folding back of the tooth, also is ; so that, in simply feeding, the fangs are not erected.
Page 7 - Crosse, then offered the following resolution, which was adopted: "Resolved, That, it is the sense of this...

Bibliographic information