( 447 ) XXI, Mimetic North Amei^ican species of the Genus Limenitis (s. 1.) and their models. By Edward B. PouLTON, D.Sc, M.A., LL.D. (Princeton), F.R.S., etc., Hope Professor of Zoology in the University of Oxford, Fellow of Jesus College, Oxford. [Read November 20th, 1907.] Plate XXV. CONTENTS. PAGE Introduction 448 THE DANAINE INVASION OF THE NEW WORLD AND THE CONSEQUENT MODIFICATION OF NORTH AMERI-CAN SPECIES OF LIMENITIS 449 The evolution of Limenitis (Basilarghia) archippus, Cr. (misippus, F.) and its forms as mimics of the in-vading Danaines 452 The evidence that Limenitis archippus occurs at the SAME time and PLACE AS ITS MODEL 454 The evolution of the mimetic pattern of L. archippus from that of the non-mimetic L. arthemis . . . 454 (a) Hhvd-wiiig Under Surface of Limenitis archippus , 456 (b) Fore-iving Under Surface of Limenitis archippus . 457 (c) The Upper Surface of Limenitis archippus . . . 458 (d) The white spots on Body and Ap)pendages of Limenitis archipp-\is ........ 459 Limenitis archippus, p. hulsti, Edw., a better mimic than archippus itself 460 Limenitis archippus, p. ploridensis, Strecker (eros, Edwards), a mimic of Danaida Berenice . . . 460 THE PAPILIONINE MODELS OF LIMENITIS ASTYANAX . 462 The Geographical uistribdtion op Papilio (Pharma-COPHAGUS) PHILENOR AND ITS PRIMARY, SECONDARY AND TERTIARY MIMICS 463 The EVIDENCE THAT PaPILIO PHILENOR AND ITS MIMICS OCCUR AT THE SAME PLACE" AND TIME .... 466 The RELATION OP THE TDRNUS FEMALE OP PaPILIO GLAUCUS to (i) the primary model, p. philenor ; (2) its co-mimics in the papilioninie 467 Secondary mimetic resemblances between the three PaPILIONINE mimics op p. PHILENOR .... 469 The EVOLUTION of the mimetic pattern op Limenitis (BaSILARCHIa) ASTYANAX PROM THAT OF THE NON-MIMETIC L. ARTHEMIS 471 L. ASTYANAX A SECONDARY MIMIC OP THE PaPILIO MIMICS op philenor 472 Transition between arthemis and astyanax . , , 473 TRANS. ENT. SCO. LOND. ] 908. — PART III, (DKC.)
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