366 Baron Osten Sacken on the Cylindrotomina. 
lide. He says—‘ The translucent tracheze end, a short 
distance from the anus, on the dorsal side, in two brown, 
very distinct spiracles ; their anterior end is not visible, 
because, in the anterior segments, they he deeper from the 
surface.” 
The pupz of the Cylindrotominaare also very peculiar ; 
they are fastened to the food plants, and resemble the 
pupze of some Lepidoptera. 
PLATES VIIT.-XI. 
[The explanation faces the Piaves. | 
