34 IN MEMORIAM. 



inadvisable that several original descriptions of the earlier 

 stages should also be extant. 



Gracilaria Kollariella, ZelL, Heyden (E. Z. 1862, 

 p. 362). The larva mines the leaves of the broom {Saro- 

 thamnus scojmrius), more rarely those of Genista Ger^ 

 manica; it is found near Frankfort on the Taunus, and in 

 the Odenwald, in the middle of June. The mine is a large, 

 grey-brown spot, which often covers an entire leaf. The 

 larva quits one leaf to penetrate into another. At the end 

 of June it quits the mine ; it spins on the upper side of a leaf, 

 which is a little curved upward lengthwise, an elongate, 

 flat, paper-like, transparent, yellowish-white cocoon, from 

 which the imago makes its appearance in the latter half of 

 July. 



The larvae of a second brood are found from the middle 

 of September to the middle of October. When young, it is 

 more yellowish-wliite, and mines at first pale, finger-like 

 tracks, w^hich afterwards occupy the entire surface of the 

 leaf, from which it ejects its excrement. In the middle of 

 October it quites the mine and makes its cocoon, which it 

 fastens to any convenient object, and winters within it. 

 (1830, 1859.) 



Ornix Pfaffenzelleri, Frey, Heyden (E. Z. 1863, 

 p. 344). Professor H. Frey having first called my attention 

 to it, I found the larva at St. Moritz, in the Upper Enga- 

 dine, on Cotoneasfer vulgaris. It feeds at the end of June 

 and beginning of July within a leaf folded together upwards, 

 devouring the upper surface of the leaf. It changes to the 

 pupa state beneath a turned-down edge of the leaf, in a 

 parchment-like, brownisli, narrow cocoon. 



The cocoons which I brought home with me to Frankfort 



