_Macrogaster castaneæ_, 6 Macro-lepidoptera, 6 _Macroglossa stellatarum_, 52. _Plate 21_ _Macrothylacia rubi_, 121. _Plates 58, 59_ _Malacosoma neustria_, 107, _Plates 48, 49_; _castrensis_, 109, _Plates 48, 49_ _Mamestra advena_, 237, _Plate 117_; _albicolon_, 240, _Plate 120_; _contigua_, 243, _Plate 121_; _dentina_, 246, _Plate 122_; _dissimilis_, 242, _Plate 121_; _genistæ_, 241, _Plate 121_; _glauca_, 245, _Plate 122_; _nebulosa_, 238, _Plate 119_; _oleracea_, 241, _Plates 120, 129_; _peregrina_, 246, _Plate 122_; _persicariæ_, 239, _Plates 120, 129_; _pisi_, 244, _Plates 122, 129_; _thalassina_, 243, _Plate 121_; _tincta_, 237, _Plate 117_; _trifolii_, 245, _Plate 122_ _Manduca atropos_, 24. _Plates 8, 9, 11_ Maple Prominent, 76. _Plates 32, 33_ Marbled Beauty, 200. _Plate 103_ Marbled Brown, 67. _Plate 28_ Marbled Coronet, 248. _Plate 123_ Marbled Green, 200. _Plate 103_ Marbled Minor, 275. _Plate 134_ Marsh Dagger, 194. _Plate 100_ Marsh Moth, 321. _Plate 153_ Mathew's Wainscot, 304. _Plate 149_ _Meliana flammea_, 300. _Plate 145_ Mere Wainscot, 301. _Plate 146_ Merveille du jour, 290. _Plate 141_ _Metopsilus porcellus_, 48. _Plates 18, 19_ _Miana bicoloria_, 277, _Plate 134_; _fasciuncula_, 275, _Plate 134_; _literosa_, 276, _Plate 134_; _strigilis_, 275, _Plate 134_ Micro-lepidoptera, 6 _Micropterygidæ_, 7 Middle-barred Minor, 275. _Plate 134_ Miller, 191. _Plate 100_ _Miltochrista miniata_, 176. _Plate 95_ _Mimas tiliæ_, 17. _Plates 2, 3_ Minor Shoulder-knot, 263. _Plate 125_ _Miselia bimaculosa_, 289, _Plate 141_; _oxyacanthæ_, 289, _Plate 141_ _Mormo maura_, 292. _Plate 142_ Mottled Rustic, 316. _Plate 151_ Mouse, 324. _Plates 154, 156_ Muslin, 153. _Plates 75, 78, 79_ Muslin Footman, 174. _Plates 94, 95_