332 AMERICAN POMOLOGY. 



should be cut or torn off in the winter, when they show 

 very plainly upon deciduous trees; they may be crushed, 

 but had better be committed to the flames. 



The Notodontians are so called from a hump or horn, 

 which rises from the top of the fourth ring of the cater- 

 pillar ; the tail is always raised when the insect is at rest. 

 One of these is called, from its horn, Ccelodcisys (Nbto- 

 don to) unicomis. Some species consume the foliage of 

 our fruit trees, particularly the apple and quince ; one of 

 these, the Datana ministra, (the Eumetopona ministra 

 of Fitch, or the Pygcera ministra of Harris), will be no- 

 ticed below. 



Eudryas grata, and E, unio, The Beautiful Wood- 

 nymph, and the Pearl Wood-nymph. The worms are very 

 much alike, and resemble the Spotted Forrester. The 

 moths come forth in July ; the fore-wings are milk white, 

 bordered behind and on the outer side, from the base to 

 the middle, with rusty brown, edged on the inner side with 

 greenish olive ; hind-wings nankeen yellow, with a black- 

 ish-brown border. These worms are best removed by 

 hand-picking. 



Datana ministra, or the Hand-maid Moth. The moths 

 are troublesome visitors to the evening student in June ; 

 they are brown, hairy, thick-bodied, and measure rather 

 more than an inch across the wings. This creature is 

 destined to give us a great deal of trouble by her progeny, 

 for she deposits her numerous eggs on the under side of 

 the leaf on a twig of quince, apple, and cherry trees, 

 where they hatch into worms, that, during their existence 

 of about four weeks, consume immense quantities of foli- 

 age, often stripping the trees bare. 



