. The American entomologist. Entomology. THE AMERICAN ENTOMOLOGIST. 227 Parthenogenesis in Orgyia antiqua.—Curi- ously and without exception every cocoon I have examined since the middle of Januarj'—at least fifty specimens—had the mass of eggs upon it, indicating some remarkable things : i, that it has no enemies to destroy it ; 2, that it is perfectly fitted to withstand our climate; 3, that all of the winter-brood are females, and must reproduce, without the co-operation of a male, hypart/u-no- geiti'sis, which has already been discovered in some wingless insects. The eggs hatched (May 15th
. The American entomologist. Entomology. THE AMERICAN ENTOMOLOGIST. 227 Parthenogenesis in Orgyia antiqua.—Curi- ously and without exception every cocoon I have examined since the middle of Januarj'—at least fifty specimens—had the mass of eggs upon it, indicating some remarkable things : i, that it has no enemies to destroy it ; 2, that it is perfectly fitted to withstand our climate; 3, that all of the winter-brood are females, and must reproduce, without the co-operation of a male, hypart/u-no- geiti'sis, which has already been discovered in some wingless insects. The eggs hatched (May 15th, 1880) as soon as the leaves were expanded, yielding the vernal brood, to which must belong the males described by others.—W. S. B. [It is possible, also, that the males, always issuing before winter and having no occasion for permanent attachment like the females, form their cocoons on or among the leaves, which subsequentl)' drop to the ground.—Ed.] Dominican Case-bearer.—Last season I bred Coscinoptera doviinicana from the eggs, and con- firmed your observations on it. Two which I had hihernating under a stone came forth as adults from their cases a few da)'s since. They [Fig. 118.]. CosciNOPTKKA DOMiNiCANA: rt, Karva extracted from case ; ^, do, with case ; c, beetle showing punctures ; d, same, nat. size ; f, egg ; y, head of larva, underside ; g, head of male beetle; /«, jaw of same ; z, eggs, nat. size ; _/', leg of larva ; k^ jaw of same ; /, maxilla of samo. (After Riley.) are very voracious, eating the margins off from a label in the bottle with them, and, what seems contrary to their vegetarian nature, they have devoured a small black caterpillar (probably Lithosia miniata Kirby) which I placed with them. —W. S. B. Notes on Cotton Worm in Florida.—I de- voted the entire' day to examining McGrady's cotton fields. I have before reported in regard to this plantation that last year's crop was nearly destroyed by "the worm," which made its ap-
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