CHAP. XXI.] INSECTS. 481 



Sub-order — Lepidoptera Heterocera, or Moths. 



The Lepidoptera Heterocera, or Moths, are of such immense 

 extent, and are, besides, so imperfectly known compared with 

 the Butterflies, that it would serve no purpose to go into the 

 details of their distribution ; especially as most of the families 

 and a considerable number of the genera are cosmopolitan. We 

 propose therefore to notice only the Sphingina, which, being 

 generally of large size and finely marked or coloured, and many 

 of them day-fliers, have been extensively collected ; and whose 

 numbers are more manageable than the succeeding groups. 



Gvmi'p I.— SPHINGINA. 



Family 17.— ZYG^NID^ (46 Genera, about 530 Species). 



The Zygsenidffi are universally distributed, but many of the 

 genera are restricted in their range. Zygcena (85 sp.) is mainly 

 Palsearctic, but 2 species are South African, and 1 North 

 American ; Procris (22 sp.) has a scattered distribution, from the 

 Palaearctic region to South America, South Africa and North 

 India ; Heterogynis (3 sp.) and Dysauods (3 sp.) are European ; 

 Pollanisus (3 sp.) is Australian ; Glaucopis (1 20 sp.) is mainly 

 Neotropical, with a few Oriental ; Syntomis (94 sp.) is found in 

 all the Old-World regions ; and Euchromia (150 sp.) is found 

 in all warm countries, though especially abundant in South 

 America. 



Family 18.— CASTNIID^ (7 Genera, 63 Species). 



The Castniidse have an interesting distribution, being mainly 

 Neotropical, with four genera in Australia and New Guinea. 

 Castnia, Coronis, and Gazer a, with 51 species, are Neotropical ; 

 Synemon, Euschemon, Damias and Cocytia, with 12 species, are 

 Australian, the latter being found only in the Papuan Islands. 



