41. ♀ rarely with legs; ♀ and larvae case-dwellers .......... Fam. 19. Psychidae, see p. [392].
42. ♀ and larvae free[[238]] .......... Fam. 18. Heterogynidae, see p. [392].
43. Hind wing with nervule 8 anastomosing shortly with 7 .......... Fam. 26. Limacodidae, see. p. [401].
44. Fore wing with nervure 1c absent (Cat. 45-51).
45. Hind wing with nervule 8 rising out of 7 .......... Fam. 34. Arctiidae, see p. [408].
46. Hind wing with nervule 8 connected with 7 by a bar, or touching it near middle of cell (Cat. 47, 48).
47. Palpi with the third joint naked and reaching far above vertex of head; proboscis present .......... Fam. 33. Hypsidae, see p. [408].
48. Palpi not reaching above vertex of head; proboscis absent or very minute .......... Fam. 32. Lymantriidae, see p. [406].
49. Hind wing with nervule 8 anastomosing shortly with 7 near the base; proboscis well developed (Cat. 50, 51).
50. Antennae more or less thick towards tip .......... Fam. 35. Agaristidae, see p. [410].