Index to the Species.
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CALYMENE Blumenbachii, page 28
Callicephala, 30
Selenecephala, 31
Platys, 32
Microps, 34
Anchiops, 35
Diops, 37
Macrophthalma, 39
Bufo, 41
Rana, 42
ASAPHUS Laticostatus, 45
Selenurus, 46
Limulurus, 48
Caudatus, 50
Hausmanni, 52
Pleuroptyx, 55
Micrurus, 56
Wetherilli, 57
PARADOXIDES Boltoni, 60
OGYGIA Sillimani, 63
ISOTELUS Gigas, 67
Planus, 68
Cyclops, 69
Megalops, 70
Stegops, 71
CRYPTOLITHUS Tessellatus, 73
Bigsbii, 76
DIPLEURA Dekayi, 79
TRIMERUS Delphinocephalus, 82
CERAURUS Pleurexanthemus, 84
TRIARTHRUS Beckii, 87
NUTTAINIA Sparsa, 89
BRONGNIATIA Platycephala, 91