ZOOLOGY. 51 
fection of plumage of the fourth spring, as mentioned by him, 
having the deep chestnut color covering the whole lower parts, 
and the glossy blackness on the head, wings and tail feathers ; 
_the others were birds of the second or third years. The nests I 
found, were all formed entirely of grass, coarse without and finer 
within, like those Audubon speaks of as usually built in Louisiana. 
On the 30th of July, I observed a number of these birds, not 
less than twenty-five or thirty, congregated together on the top of 
a decayed tree, which stood near the edges of a large cultivated 
field; at my approach they flew off, and since that time I have 
neither seen or heard a single individual of this species, and they 
seem to have entirely disappeared from the place, although the 
autumn is near at hand. — H. S. Kepnery. 
Torre Trees Destroyep By Bark Lice.—I send you some 
specimens of Coccidæ belonging to the genus Lecanium, and which 
I think is an undescribed species. 
Mr. P. R. Uhler of Baltimore writes me that it is new to him, 
and undescribed in the many works which he possesses treating 
of the Coccidæ. It is very near to the Lecanium juglandis Bouché. 
I send you some of the deserted scales, also some of the larvee 
as they appear at this date. These bark lice are very destructive 
to the Tulip tree (Liriodendron tulipifera). We had some beauti- 
ful specimens of these on the college grounds, which have been 
entirely ruined. 
These insects are ovoviviparous. The eggs, which are one-for- 
tieth of an inch in length, appear in July almost filling the female. 
In August the gravid female contains the embryo in all stages 
of development, from the undeveloped egg to the active larva. 
From the last of August to the first of October, the larve leave 
the scale through a central opening in the under surface. 
The larve are in form and color quite like the common sow-bug, 
one-twenty-fifth of an inch long, antennæ eight-jointed, abdomen 
nine-jointed, the posterior joints being deeply sinuate, with a long 
seta on each side. After wandering about the tree from eight to 
ten days, they become attached to the bark of the trunk and limbs 
by little peripheral filaments, two on each segment. The color 
soon turns from brown to black. 
The imago is perfectly formed in June. The turtle-shaped scale 
being then five-twentieths of an inch long. of a dark flesh color, 
