ait. It measures from three and a animal, and that the leaf was but a temporary place of attach- They also swam readily by sudden jerks of the body, es- ment. The mass is either broadly oval or circular in cir- pecially by striking the abdomen beneath, very much re- cumference, flat on the attached… … inch long, about one third as ing, which I quote in full: wide, ellipsoidal, translucent, “A most respectable man, sordid white in color, and who keeps the toll bridge with a very delicate shell; over Rock River, where this insect is very abundant, informed me that on several occa- polished. Though…
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