30 Journal New York Entomological Society. [Voi. v. 
Body shining; tracheae evident where not obscured by the large spots. 
Thoracic feet marked with brown; abdominal ones short, colorless. 
There are six colorless, eversible, ventral glands on joints 6 to n. 
Stage VI. _(Ultimate.) Head pale, the marks duskily clouded; a 
patch over eye and streak on vertex. Body whitish, the black marks 
supplemented by a series of black streaks on the annulets, diffusely 
spreading over the dorsum. The body is scarcely shiny and does not 
appear sticky. Width of head .8 or i mm. 
Found on the willow at Jefferson, N. H., and Englewood, N. J. 
These larvae are gregarious, with all the appearances of slugs, 
though they are really not sticky as they look, but only very shiny. 
The number of feet and the ventral glands shows them to belong to the 
Nematinae, although from general appearance one would suppose them 
to be some species of Eriocampa or Monostegia . 
I was much surprised that the flies should belong to Pachyitem atus . 
The other larvae of this genus are solitary grass feeders, whereas a larva very 
similar to this species is described as that of a species of Pnstiphora * 
-«-- 
TENACITY OF LIFE IN ADULTS OF CRYPTORHYN- 
CHUS LAPATHI. 
By F. M. Webster. 
On August 24th, by invitation of Mr. Ottomar Reinecke, I visited 
the locality near Buffalo, N. Y., locally known as Beer Creek, where 
my friend had only a short time before discovered this species. We 
arrived on the ground about 3 p. m., leaving about 5 p. m., and dur¬ 
ing that time I was fortunate enough to capture eighteen specimens. 
These were placed in a small collecting bottle, heavily charged with 
cyanide of potassium, and had been prepared only a few days before. 
I had put in so much of the cyanide of potassium that it soon dis¬ 
colored the plaster parts in which it was embedded and collected so 
much moisture that my battle was hardly fit for use. The specimens 
were placed in this bottle as collected, and remained therein until after 
11:30 p. m., or from six to seven hours, when they were removed and 
placed in a small tight tin box. The following morning they were ex¬ 
amined, but gave no signs of life. On returning home and opening 
the box, on August 29th, not only were nearly all alive, but several 
were found in copulation ! 
* P. murtfeldtice Marlatt. “ A smooth greenish slug with black head, feeding 
on black willow.” Tech. ser. 3, U. S. Dept. Agr., p. 117. 
