MOTHS. 191 



ally of moderate size, with slender bodies and dentated wings, 

 and usually of dull colours, being of some shade of grey or brown, 

 or dull green, with darker markings. The most interesting of the 

 exotic genera is Hypochroma, Guen., which has rather short fore 

 Avings and long hind wings, with very sharply-defined markings on 

 the under surface. They are generally grey or greenish above, 

 with darker lines and markings, and paler, with black markings 

 below. H. OccuUaria, Boisd., a common Australian species, is grey, 

 with black dentated lines above, and white with black markings 

 below ; each wing is also marked beneath Avith a slender scarlet 

 line. 



The Geometrldce include species of moderate or large size, of 

 a bright green colour, whence they are commonly known as 

 " Emeralds." It is rather an extensive family, and the species are 

 not likely to be mistaken for those of any other. The wings are 

 generally entire or angulated, and are simply marked with trans- 

 verse lines, or occasionally with larger masses of colour, but are 

 never speckled. 



The Palyadce are a small exotic group, with slender bodies, 

 and unusually long legs and antennae. One of the commonest 

 species is Eumelea Bosalia, Cram., an East Indian species, of a 

 yellow colour, striated all over with reddish ; it is a very variable 

 insect. The South American genus Ophthalmophora, Guen., is 

 decorated with submarginal silvery lines, and generally with a 

 black eye with metallic markings on the hind wings. 



The Acidaliidce are a very large family of small moths, gener- 

 ally with rounded wings, and often with a conspicuous black dot 

 in the centre of each. Many are white, yellowish, or tawny, with 

 transverse brown lines. The species of Argyris, Guen., are 

 remarkable for having a large irregular eye, more or less marked 

 with silver, on the fore wings. They are met with in south- 

 eastern Europe, Africa, and the East Indies. 



Micronia, Guen., the type of the exotic family Microniidce, 

 includes a number of white species from the East Indies, Australia, 

 and Africa. They are marked with black transverse lines, and 

 resemble small UrapterydcB, the hind wings having a slight tail, 

 which is generally marked with a black spot. 



The Caheridce are a small family of white species (rarely 

 brown or yellowish), in which the antennae of the males are more 

 decidedly pectinated than in the Acidaliidce. The most conspi- 

 cuous species is CorycAa Taminata, W. V.,a white moth, measuring 



