120 



no observations on the habits of the species have been recorded in 

 this country. In Europe the larva is known to feed on the leaves 

 of many trees and shrubs, but it has been observed in this coun- 

 try only on currant. It, however, doubtless feeds on several other 

 plants. 



The eggs were found at Albany, on Black Currant by our State 

 Entomologist. As Dr. I^intner did not recognize them, they were 

 sent to the writer in the hope that I might know them ; but they 

 were equally strange to me. Fortunately the eggs soon hatched ; 

 and I was able to follow the life history of the species in our in- 

 sectary. 



The egg* are very minute each one measuring only about .027 

 inch in diameter. They are scale-like in form ; . „ . *, 



and are laid in a mass overlapping each other. pMiMfiii 

 The mass is flattened oval in outline and contains 

 about twenty -five eggs ; it measures in its great- 

 est diameter one-sixth of an inch. It is represent- 

 ed in Fig. 12, enlarged. The specimen was fig- 

 ured after the larvae had hatched ; and the open- 

 ings in the eggs from which the larvae escaped FlG I2 _£ s;(rs * 

 are shown in the figure. Cacoecia rosana, 



The larvae emerged from the eggs during the enlarged. 

 last days of April. At that time the leaves of currant were just ex- 

 panding, the largest measuring one inch across. As 110 Black 

 Currant, the plant upon which the eggs were found, was at hand, 

 the larvae were placed on the common red currant. They were 

 perfectly contented, showing that the species will readily infest 

 this plant. 



The young larvae seek the ends of the branches of the plant 

 upon which they are. Here they begin to feed either in the ter- 

 minal bud or in a crease in a leaf. In the latter case, they spin 

 a silken bridge roofing in this furrow in which they live singly for 

 a time. Later when they have increased somewhat in size, each 

 larva fastens together the terminal leaves of a twig into an irregu- 

 lar shaped wad, about which it spins considerable silk. Within 

 this wad the larva lives feeding on the inclosed leaves. Still later 

 when the larva has become nearly full-grown it sometimes rolls a 

 large leaf into a tubular nest as shown in Fig. 13. 



The larva does not leave its nest to undergo its transformations, 

 but changes to a pupa within the folded or rolled leaves. When 



