48 I,EI'Il)()l>TEkA. 



The Currant borer, Aigeria tipuliformis Linn. 

 This insect is closely allied to the preceding species, 

 but is much smaller. The eggs are laid on the twigs. 

 The larvze penetrate the stem, and devour the pith, in 

 this way making a burrow in which they live and un- 

 dergo their transformations. The perfect insects ap- 

 pear in June. 



Remedy. — Burn infested twigs in May or earlier. 



Zyg^NID/F,. 



Not discussed in this course. The students, how- 

 ever, are advised to examine the specimens illustra- 

 ting it, especially those of Megantliymus yuccm Bois- 

 duval. 



BOMHYCID/E {Spinners). 



This Himily is characterized by Packard as follows : 

 " Their thick heavy bodies, and small sunken heads, 

 and often obsolete mouth-parts (the maxilla; or tongue 

 being especially short compared with other moths), 

 and the broadly pectinated antenna;, together with 

 their broad, often falcate wings and sluggish habits, 

 notwithstanding numerous exceptions, afford good 

 characters for distinguishing them. The clypeus is 

 large, the antenna: are inserted higher up than in other 

 moths, so that when in doubt as to the position of 

 some aberrant forms, a reference to these characters 

 enables us to determine quite readily as to their affin- 

 ities." 



The White marked Tussock moth, Orgyia Icucostig- 

 ma Sm. and Abbott. — The larva; is a very beautiful, 

 slender caterpillar, with pale yellow hairs and tufts, 

 two black pencils projecting over its head and one over 



