88 LLOYD S NATURAL HISTORY. 



about eight inches in expanse, and much resemble Attacus in 

 colour and general appearance, but the eye-spots are rounded, 

 and the hind- wings are produced into very long and very 

 broad tails, curving outwards. 



There are other Satiirniidce with shorter or longer tails, 

 belonging to Tropcea (Hiibner), Actias (Leach), &c. They 

 measure from two to five inches across the fore-wings, which 

 are usually pointed, and sub-falcate, and they are most 

 numerous in China and North India ; and single species are 

 found in North America, Natal, and Spain. The species 

 are mostly of a glaucous green (sometimes darker), with a large 

 lunule in each wing. 



There are other tailed species in West Africa and South 

 America {Eudcejnonia, Hiibner, &c.), which measure two 

 or three inches across the fore-wings. The hind-wings are 

 produced into very long slender tails, often nearly six inches 

 in length. 



GENUS PHILOSAMIA. 



Philosamia, Grote, Proc. Amer. Phil. Soc, xiv., p. 258 (1874). 

 Sa/nia, Hiibner, Verz. bek. Schmett., p. 156 (1822?); Grote, 

 Proc. Ent. Soc. Philad, v., p. 228 (1865). 



This genus differs from Attacus chiefly in the shape of the 

 vitreous spot, which forms a long narrow lunule, bordered 

 with yellow and black. The outer white band varies con" 

 siderably in breadth, and is often bordered with a pinkish 

 suffusion on the hind-wings. The species are smaller than 

 Attacus, averaging five or six inches in expanse. There are 

 many closely allied forms in the East Indies, perhaps not 

 all truly distinct ; they were formerly classed as one species 

 under the name of Attacus cyntJiia^ Drury. They feed on 

 the castor-oil plant, Ai/ajithus glandulosa, and other trees, and 



