Even a superficial survey of the facts makes it evident that cases of mimicry tend to run in series--that a closely related series of mimics, though often of very different pattern and colour, tends to resemble a closely related series of models. In Asia we have the Cosmodesmus Papilios mimicking a series of Danaines, while the true Papilios (cf. Appendix II) tend to resemble a series of the less conspicuous members of the Pharmacophagus group. In the same region the various species of _Elymnias_ form a series resembling a series of Danaines. In Africa there stands out the Cosmodesmus group again mimicking a Danaine series, and in part also an Acraeine series. Overlapping the Acraeines again are various forms of the Nymphaline genus _Pseudacraea_. It is also of interest that in _Danais chrysippus_ and _Acraea encedon_ the Danaine and Acraeine series overlap (cf. Pl. IX). Similar phenomena occur also in South America, where closely parallel series of colour patterns are exhibited by several {145} Ithomiines, by _Heliconius_, _Lycorea_, _Dismorphia_, and other genera (cf. p. 39). On the other hand such mimetic resemblances as are shewn by the South American Swallow-tails of the Papilio and Cosmodesmus groups are almost all with the Pharmacophagus group, and almost all of the red-black kind (cf. p. 43). On the whole it may be stated that the majority of cases of mimicry fall into one or other of such series as the above. If we select a case of mimicry at random we shall generally find that there are at least several close allies of the mimic resembling several close allies of the model. Isolated cases such as the resemblance between _Pareronia_ and _Danais_ (p. 23), between _Archonias_ and a Pharmacophagus Papilio (p. 43), or the extraordinary instance of _Papilio laglaizei_ and _Alcidis agathyrsus_, must be regarded as exceptional.