275 
On a previous page of the present number, at No. 23 in the list of 
insects found at the Columbian Exposition, we have referred to this 
species. In several closed jars of sugar at the Exposition we noticed 
living specimens of the Kice Weevil (Calandra oryzcv) and one or two 
other species, but attached no importance to the matter as their occur- 
rence there was doubtless due to the fact that the receptacle contain- 
ing the sugar had been left standing open in the vicinity of other 
receptacles containing grain, flour, or other farinaceous products. No 
insects are known to breed in refined sugar, but some of the mites of 
the genus Glyciphagus, called sugar mites, infest the cheaper grades of 
brown sugar and the sugar of dried figs, prunes, and other fruits. The 
commoner species of insects that infest flour and meal, dried fruits, and 
the like in warehouses and groceries, such as Plodia interpunctella and 
Silvanus surinamensis, are often sent to us with the statement that they 
were found in sugar, salt and other substances that could not serve as 
their food. Perhaps the most remarkable case of this sort that has 
come to our notice is that published in Volume I of Insect Life (p. 
314) concerning this same Tenebrioides manritanicus, which, was found 
to have lived for some time in the insecticide, white hellebore. 
EXTRAORDINARY MULTIPLICATION OF CERTAIN LEPIDOPTERA. 
At a meeting of the Entomological Society of France, held October 
28, M. C. Jourdheuille called attention to the wonderful multiplication 
of Lasiocampa pini L. in the valley of the Seine, where its presence had 
been noticed only within the last few years. It attacked not only older 
trees but also the young scions, involving in some cases the destruction 
of these last. He exhibited a twig of Finns sylvestris plucked at ran- 
dom upon which fourteen larvse had spun up, pressed close to one 
another. 
The same member showed leaves of Populus nigra upon which were 
traces of thirty or forty Idthocolletis populifoliella Tr., an insect which 
has multiplied prodigiously in the valleys of the Seine and Aube. To 
give an idea of its inconceivable abundance, M. Jourdheuille cited two 
authentic instances. At Viapres on the Aube one of his friends, return- 
ing to his country house, went to light the fire when a squirming mass 
of these little insects, as large as his head, fell upon and extinguished 
the fire. Upon another occasion, returning home at twilight, he was 
compelled to stop, as was his horse, blinded by the swarms of the same 
insect, which flew into the eyes, nose, and ears of the horse and its. 
driver, and prevented their advance. 
THE POTATO-TUBER MOTH IN CALIFORNIA AND TEXAS. 
The California Orchard and Farm, in its issue of September 15, 1893, 
commenting upon our editorial in Vol. v, p. 291, entitled " Legislation 
against Insects," states that the U, S. Division of Entomology is about 
