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Show never been figured. Such species have been included in the appended tables, when their descriptions have shown that they do not differ in characters of mimetic importance from the closely allied species with which I am acquainted; in every case these are marked with an asterisk. I have not included a large concourse of species belonging to the subfamilies Mesosince and Apomecynince, which present in their general facies a marked resemblance to the Rhynchophora, for, although the tyro in entomology might readily mistake many of these longicorns for Rhynchophorous species, I have, nevertheless, found it quite impossible to pair any one given species with a definite model. The resemblance is in fact, as is so frequently the case, general and indefinite, not special as, for example, in the species of the subfamilies Astatheince and Saperdince, which mimic for the most part definite species of the Phytophaga. It will therefore suffice if I simply enumerate here those genera of the Mesosince and Apomecynince which present most markedly Rhynchophorous features:- Subfam. Mesosince:-Anancylus, Planodes, Ereis, Cacia,Mnemea, Sorbia. All these Coleoptera, more especially Ereis anthriboides (Pasc.), have a general resemblance to Anthribidae. Subfam. Apomecynince :-Cenodocus, Synelasma, Etaxalus, Phesates, Praonethci, Sybra, Ropica. These bear a general resemblance to Curculionidae. N o t e s o x T a b l e 1.- Longicorns mimicking Hymenoptera. The subfamily Phytceciince furnishes ten and probably more species belonging to three genera which mimic the Braconidte. The models can be divided into two sections :-(1) species with dark red head and thorax and black abdomen and wings (genus Myosoma); (2) reddish-ochreous species (genus 1phiaidax), one of which has already been shown to be mimicked by Mantispa simidatrix. Scytasis nitida (Pasc.) and four species of Oberea are coloured in identically the same way as their models, the red-and-black Braconids. Furthermore, S. nitida and three out of the four species of Oberea (the exception being 0. rubetra (Pasc.)) are marked with a large white patch of pubescence on the sides of the first and second abdominal segments, which patches, when the beetle is seen in profile, give an impression of a wasp-like waist, from the posterior end of which the abdomen appears gradually to swell in size. This effect is shown in Plate XIX. figs. 13, 14, & 15, representing respectively Oberea strigosci (Pasc.) var., 0. brevicollis (Pasc.), and Oberea probably n. sp. near strigosa (Pasc.). The thin waist of the model is not seen from above when the insect is at rest, being hidden by the laid-back wings, and consequently this obviates the necessity of dorsal white patches on the mimic as in the African Locustid Myrmecophana fallax, whose model is a wingless ant with an abdominal peduncle plainly 238 MR. R. SHELF0RD OX MIMETIC INSECTS AXD [Nov. 4, |