THE LESSER APPLE LEAF-FOLDER. 209 
in reality, only a net-work of cells. The frond begins with a 
single oblong cell terminating in from five to seven similar but 
smaller cells which in turn divide in like manner. In this way, 
a fan-like frond is formed. When moistened, the cells swell up 
and appear to be connected, but, on drying, the adjacent cell- 
walls separate leaving a net-work. In Mr. Wright’s collection 
were specimens of the very curious Blodgettia confervoides, whic 
Harvey at first supposed was a Cladophora, and which is now tem- 
porarily placed amongst the Valoniacez awaiting further develop- 
ments. Dictyospheria favulosa, found in all tropical seas, and 
Valonia cegagrophila, looking like a Cladophora which has been 
living too highly and become bloated, oe our list of Cuban 
Chlorosperms. 
THE LESSER APPLE LEAF-FOLDER. 
BY WM. LEBARON, M.D. 
In the course of my investigations respecting the noxious insects 
of the State of Illinois, during the summer of 1870, my attention 
was attracted to a small, and so far as I can learn, undescribed 
species of moth, belonging to the genus Tortrix, the larva of which 
is extremely destructive to young nursery apple trees. It may be 
called the Lesser Apple Leaf-folder. (Tortrix malivorana, mihi. 
First Annual Report upon the noxious insects of Illinois, page 
ibi 2) 
Most of my observations upon this insect were made during a 
visit to the fruit farm of Mr. B. D. Wier, of Lacon, in the north- 
ern central part of the State, on the 22d of July, 1870. At 
*H: ion t fer to thi port, I will take this opport ty to state, in reply 
to a suggestion of the Editors of the NATURALIST, that this report, being the writer’s 
first annual Report as State Entomologist of Illinois, was published at Springfield, in 
. aecordance with a provision of the law of the State, under date of Dec. 15th, 1870. The 
whole edition, numbering five thousand copies, was destroyed by the burning, on the 
23d of February, Bret) of | the Public Bindery in which these reports and other State 
documents ; purp f being t in convenient form for distri- 
bution. A tion has | taken, up p eneral Assembly 
hahi 
In this event, such parts of th port d i most worthy of preservation will 
