LIST OF SPECIES. 
Pieris, Schr. 
28. Amaryllis, Fab. 
29. Ilaire, Godt. 
30. Monuste, Linn. 
31. Beckerii, Edw. 
32. Sisymbri, Bd. 
33. Nelsonii, Edw. 
34. Occidentalis, Reak. 
Winter form Calyce, Edw. 
35. Protodice, Bd.-Lec. 
Winter form Vernalis, Edw. 
36. Napi, Esp. 
Arctic form Bryoniae, Ochs. 
A ar. Hulda, Edw. 
1. Winter form Venosa, Sc. 
2. Winter form Oleracea-hiema- 
lis, Harr. 
Var. Borealis, Gro. 
Var. Frigida, Sc. 
Aberr. Virginiensis, Edw. 
3. (1.) Summer form Acadica, 
Edw. 
(2.) Summer form, a. Pallida, 
Sc. 
b. Castoria, Reak. 
(3.) Summer form Oleracea- 
mstiva, Harr. 
37. Virginiensis, Edw. 
38. Rapas, Linn. 
Var. Marginalis, Sc. 
Var. Yreka, Reak. 
Var. Mannii, Mayer. 
Var. Nov-Angliae, Sc. 
Nathalis, Bd. 
39. Iole, Bd. 
Var. Irene, Fitch. 
AntIIOCIIARIS, Bd. 
40. Lanceolata, Bd. 
41. Creusa, Doubl.-Hew. 
42. Hyantis, Edw. 
43. Olympia, Edw. 
44. Rosa, Edw. 
45. Ausonides, Bd. 
Var. Coloradensis, II. Edw. 
46. Cethura, Feld. 
47. Morrisoni, Edw. 
48. Thoosa, Sc. 
49. Sara, Bd. 
50. Reakirtii, Edw. 
51. Stella, Edw. 
52. Julia, Edw. 
53. Genutia, Fab. 
Callidryas, Bd. 
54. Eubule, Linn. 
55. Sennae, Linn. 
56. Philea, Linn. 
57. Agarithe, Bd. 
Kricogonia, Reak. 
58. Lyside, Godt. 
Summer form Terissa, Luc. 
59. Fantasia, Butl. 
60. Lanice, Lintn. 
Colias, Fab. 
61. Eurydice, Bd. 
Dimorphic form Amorphm, H. 
Edw. 
62. Caesonia, Stoll. 
63. Meadii, Edw. 
