* 
INTRODUCTION. ix 
the adjacent parts of South America; but I think it may safely be said that their 
affinities are almost entirely South-American; the few North-American forms that do 
occur can hardly be looked upon as more than stragglers from the Southern United 
States, and those mostly belonging to genera that are widely distributed. 
To show how greatly our knowledge of these insects has increased during the progress 
of this work, it may be stated that in 1880, before this enumeration was commenced, I 
Total Total Species 
number New genera. number New species. peculiar to 
of genera. of species. America. 
Sphingide ..............4. . 35 1 135 6 46 
Castnlide ..............4. ‘ . 20 1 10 
Aiigeriide .... 02.00.00 eee 8 a 44 16 41 
Agaristide .............5 11 19 7 8 
Zygenide ...... eee ee eee 59 2 208 70 152 
Arctiide ...........0005- 81 350 82 236 
Chalcosiide .............. 1 4 2 4 
Lithosiide............6-6- 40 2 119 53 101 
Melameride .............. 24 4 64 20 44 
Dioptide ............000. 8 3 30 21 27 
Liparide .............04- 18 ve 53 13 36 
Saturniide ...........05. 19 ee 74 19 47 
Lasiocampide ............ 27 .e 113 47 87 
Limacodide .............. 22 1 64 33 49 
Bombycide ..........005- 5 .. 12 9 8 
Drepanulide .............. 4 - 18 6 11 
Psychidee  ........500.0-- 3 a é 1 2 
Cosside .........0e000---- 4 ve 9 2 6 
Arbelide ..........00.2 05 ve 5 5 5 
Hepialide ...........2005. 30 we 12 5 12 
Notodontide.............. 40 oe 154 32 80 
Noctuide ......-.......-. 196 1 696 226 381 
Deltoide .............-.. 61 24 206 128 147 
Euschemide .............. 2 es 4 1 2 
Uraniide ..........200 05 3 . 18 1 9 
Geometride .............. 143 3 689 355 409 
Siculide .........2.--060 7 19 6 5 
Pyralids ...... eee eee eee 198 502 145 224 
1026 41 3639 1312 2189 
BIOL. CENTR.-AMER., Heter., Vol. I., March 1900. b 
