Dactylopidæ (the "mealy-bugs"), 89 Dactylopius, 89 alpinus, 99 calceolariæ, 100 glaucus, 100 poæ, 101 Diaspidinæ, 37, 39 Diaspis, 39, 45 Boisduvalii, 46 _Bouchei_, 44 _gigas_, 58 rosæ, 47 santali, 47 _Drosicha_*, 90 Ericerus*, 62 Eriochiton, 63, 84 hispidus, 84 spinosus, 86 Eriococcus, 88, 92 araucariæ, 93 hoheriæ, 93 multispinus, 94 pallidus, 95 Eriopeltis*, 63 Fairmairia*, 62 Fiorinia, 39, 57 asteliæ, 58 grossulariæ, 59 minima, 59 stricta, 60 Gossyparia*, 88 _Guerinia_*, 90 Hemicoccidinæ, 38, 87 Icerya, 90, 104 Purchasi (the cottony-cushion scale), 104 sacchari*, 106 Inglisia, 62, 75 leptospermi, 75 ornata, 76 patella, 78 Kermes*, 87 _camelliæ_, 41 Kermitidæ*, 87 Leachia*, 90 Lecanidæ, 63, 79 Lecanidinæ, 38, 62 Lecanium, 63, 79 depressum, 79 hemisphæricum, 80 hesperidum (the holly and ivy scale), 80 hibernaculorum, 81 maculatum, 81 mori, 82 oleæ (the "black scale"), 82 Lecanochiton, 62, 64 metrosideri, 64 Lecanococcidæ, 63, 84 Lecanodiaspidæ, 62, 63 Lecanodiaspis*, 63, 64 Lecanopsis*, 63 Leucaspis*, 39 Lichtensia*, 63 _Llaveia_*, 90 Margarodes*, 91 Monophlebidæ, 90, 104 Monophlebus*, 90 Mytilaspis, 39, 48 cordylinidis, 48 drimydis, 49 epiphytidis, 49 leptospermi, 50 metrosideri, 50 phymatodidis, 51 _pomicorticis_, 52 pomorum (the apple-scale), 51, 52 pyriformis, 53 Nidularia*, 88 Orthezia*, 89 Ortonia*, 90 Parlatoria*, 39 Philippia*, 63 _Physokermes_*, 63 Planchonia, 64, 88, 91 epacridis, 91 Poliaspis, 39, 56 media, 57 Pollinia*, 64, 87 Porphyrophora*, 91 Porphyrophoridæ*, 91 Pseudococcus, 89, 101 asteliæ, 102 Pulvinaria, 63, 83 camellicola, 83 Puto*, 89 Rhizococcus, 88, 96 _araucariæ_, 93 celmisiæ, 96 fossor, 97 Ripersia*, 89 Signoretia*, 63 Targionia*, 39 _Uhleria_, 57 _gigas_, 58 Vinsonia*, 62 Walkeriana*, 90 _Westwoodia_*, 89 DESCRIPTIONS OF PLATES. Plate I. Fig. 1. Eggs of Coccididæ. 2. Larva of Diaspidinæ. 3. Diagram of life-history of female Diaspidinæ. _a_, pellicle of larva; _b_, second pellicle; _c_, adult female somewhat shrivelled after egg-laying; _d_, eggs; _e_, secreted matter forming the "scale." In this diagram the scale is shown as overturned.