. The Entomologist's record and journal of variation . LOCALITY : Dr. T. A. Chapman opened a discussion on thesubject, and advanced, as a possible explanation, the theory that abnor-mal abundance might be due to the temporary inactivity of some selectiveor destructive force. Comparatively unprotected individuals would bethus allowed to escape, and their unprotectedness would be transmittedto, and accentuated in, subsequent broods, then, when the selectiveagency again became active, the race would be exceptionally vulnerableto its attacks, and the species would be nearly exterminated until itwa
. The Entomologist's record and journal of variation . LOCALITY : Dr. T. A. Chapman opened a discussion on thesubject, and advanced, as a possible explanation, the theory that abnor-mal abundance might be due to the temporary inactivity of some selectiveor destructive force. Comparatively unprotected individuals would bethus allowed to escape, and their unprotectedness would be transmittedto, and accentuated in, subsequent broods, then, when the selectiveagency again became active, the race would be exceptionally vulnerableto its attacks, and the species would be nearly exterminated until itwas gradually selected up to the average of its protective potentiality,and its normal number so re-established. Erkata.—Page 56, line 18, for <? read ? Page 50, line 21, for spltegi-formis read • diulreiiifofmis. Page GG, line 11, for Agloape read 73, line 32, for Ann. Soc. Eiit. Fr., Ixxviii., pp. 709 et seq. read Ent. Fr., Ixxvii., pp. 209 et seq. Page 76, line 45, for Tehprohia read Tephrosia. 1 Vol. XXI. Plate
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