The Entomologist's record and journal of variation . Mera ; Poisonous plantsin relation to medical jurisprudence, by F. Bouskell, ; Thelifehistory of Ojiomhia aiitHtnnata, Bkh., by L. B. Prout, ; Variation in broods of jnttris, Ciicidlia tiinhratico, SpUosoviaitrticac, and ^lalacnxoma rastrenfiis, by A. Bacot; Some marshlieetles of the Lea Valley, by F. B. Jennings, , Mr. Proutspaper is particularly important to all lepidopterists, and no one shouldmiss it Avho is at all interested in the Oeometrids. The Fauna ofthe London List, is carried on throughout the Noctuids
The Entomologist's record and journal of variation . Mera ; Poisonous plantsin relation to medical jurisprudence, by F. Bouskell, ; Thelifehistory of Ojiomhia aiitHtnnata, Bkh., by L. B. Prout, ; Variation in broods of jnttris, Ciicidlia tiinhratico, SpUosoviaitrticac, and ^lalacnxoma rastrenfiis, by A. Bacot; Some marshlieetles of the Lea Valley, by F. B. Jennings, , Mr. Proutspaper is particularly important to all lepidopterists, and no one shouldmiss it Avho is at all interested in the Oeometrids. The Fauna ofthe London List, is carried on throughout the Noctuids, Deltoids anda part of the Geometrids. The nomenclature used Avill probably be toa large extent that finally accepted under the noAV generally recognisedlaAvs of priority, and Ave should be glad if correspondents would asfar as possible Iveep entirely to the revised nomenclature as investi-gated by Mr. Prout and here published. The Tranmctiona shouldcertainly be in the hands of all lepidopterists. Erratum.—p. 213, line 33, for 12mm. read l* ^ ... *% JOURNAL OF VARIATION. Vol. XII. No. 10. October 15th, 1900. Migration and Dispersal of Insects: Lepidoptera. By J. W. TUTT. Besides the two species of Coliads ((/. ahtsa and (. /ii/alr) andPijraineis cardui, to which reference has already been made, Itcrisdaplidicv, Ari/i/nnis lathonia and Euvannssa autiopa, also, can only beconsidered to be British species, so far as the immigrants themselves, andthe direct progeny of these immigrants are, for the rest of the summermonths directly following their arrival, able to exist here. Theappearance of these species in this country is very uncertain, and theirnumbers always much fewer than those of the three first-named species,although in some years they are moderately abundant. It wereperhaps useless to trace the years in which these species have occurredcommonly in Britain. Generally, in such years, a few examples in theearly summer are folloAved by an unusual abundance in a
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