FURTHER NOTE ON ZYLA ANDERSONII AND 
RANA VIRGATIPES IN NEW JERSEY. 
WILLIAM T. DAVIS. 
IN Cope's Batrachia of North America, and in other works 
treating of our native frogs, Hy/a andersonii Baird is said to be 
rarely met with. In the note on this species by the writer pub- 
lished in the American Naturalist for November-December, 
1904, that view was also taken, but it must now be accepted as 
a fact that Hyla andersonii is anything but a rare frog in certain 
parts of the New Jersey pine barrens. 
At Lakehurst, New Jersey, especially in the latter part of May 
and in June, there may be heard at evening coming from the 
white cedar swamps, many voices that resemble the familiar 
quacking of ducks. If one will take the trouble to wade into one 
of these swamps at twilight and approach the singer cautiously, 
it will be discovered that he is a male Hyla andersonii. He pipes 
up and sings *aqguack-aquack-aquack " many times, or until his 
bubble of air gives out. This is the time, while he is singing, to 
take a step forward. Even when the observer is very near and 
evidently plainly in his view, he cannot resist the temptation 
to sing, for he hears his rivals all about calling loudly. The 
notes are not all alike in sound, and some individuals remind one 
of the * potrack-potrack” of the farmyard Guinea fowl The Hyla 
will be found seated on the lower limb of some tree, or among 
the top branches of a huckleberry bush. I have heard this frog 
singing at mid-day when the sun was shining brightly, especially 
after a shower. Also solitary individuals may be heard in the 
swamps much later in the year, and they do not appear to 
wander as far from the water as does Ayla versicolor. 
Rana virgatipes Cope is also more abundant at Lakehurst 
than at first supposed, and has been found from May to Sep- 
tember. In the early summer as many as twelve have been seen 
in one day without much search having been made for them. 
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