xiv LIST OF ILLUSTRATIONS. 



FIG. 



PAGE 



30. Terminal portion of Fig. 29 more magnified 26 



31. Primula (long-styled form) 28 



32. „ (short-styled form) 28 



33. Lythrum salicaria 30 



34. Knautia dipsacifolia. (After Kerner) . . 38 



35. Linncea boi-ealis, flower of. ( „ „ ) 39 



36. Carlina vulgaris. ( „ „ ) 39 



37. Silene nutans. { „ ,, ) 40 



38. Larva of Arge galathea 47 



39. Larva of Smerinthus ocellatus . . 48 



40. Larva of Chmrocampa elpenor. First Stage 54 



41. „ „ „ Second Stage 54 



42. „ „ „ Just before second moult . . . 54 



43. „ „ „ Third Stage. 55 



44. „ „ „ Fourth Stage 55 



45. „ „ „ Fifth Stage 56 



46. „ „ „ Full-grown (natural size) .... 56 



47. „ Chmrocampa porcellus , 60 



48. Aphis 72 



49. Contrivance for testing sagacity of Ants • . . 117 



50. „ „ „ 126 



51. „ „ „ „ 127 



52. ,, ,, ,, „ 127 



53. ,, ,, J? „ 128 



54 ., „ ,, ,, . . 128 



55. Flint Implement from St. Acheul, near Amiens. Natural Size . 149 



5b. „ „ ,, t) j, } , . 150 



57. Section of Fig. 56, showing discolouration of surface 151 



PLATES. 



Ancient Coins, Plates I and II To face 191 



