1883. | Zoology. 21 3 
243) added to the list of non-ciliated rotiners,and brought together 
the scattered information upon the subject. In the Proc. Phil. Acad., 
1857, page 204, Dr. Leidy described a rotifer-like creature quite 
different from those before mentioned, and having a large pro- 
tractile pouch or cap in lieu of the usual rotary disks. This he 
named Dictyophora vorax. Still another species was described by 
Mecznichow in 1866; and, another, parasitic upon worms, was ob- 
served by Claparéde in 1867. In 1882, Mr. S. A. Forbes de- 
scribed a form which Dr. Leidy suspects to be identical with 
Dictyophora voraa. The last discovery of Dr. Leidy is a rotifer 
in which a sort of head, in the form of a cup prolonged at the 
mouth into an incurved beak, takes the place of the rotary disk 
of ordinary rotifers. This creature, which is named Aryctus 
inguietus was found occupying a central position among a grou 
of the rotifer, Megalot:ocha alba, both parasitic upon a Plumatella 
from Fairmount dam, upon the Schuylkill. 
THE VERTEBRATES OF THE ADIRONDACK ReGIoN.—Dr. C. Hart 
Merriam has published in the Transactions of the Linnzan So- 
ciety of New York, the first part (Mammals) of an interesting 
work on the Vertebrates of the Adirondack region. The obser- 
vations are fresh and authentic, the results of about twenty years 
exploration in winter, as well as summer, in those wilds. Few 
mammals, says Dr. Merriam, are commonly seen by those who 
traverse the forests of the Adirondacks. ‘ This is in part due to 
the nature of their haunts, partly because they do not roam about 
much in broad daylight, but chiefly because of their shy disposi- 
tions and wary habits. The experienced hunter, more familiar 
with their haunts and ways, falls in with a larger number; still, 
by far the greater portions go unobserved. Of the forty-two 
kinds found here, I have myseif seen living, and in the wild state, 
all but three; therefore the remarks upon their habits, in the fol- 
lowing biographies are, when the contrary is not stated, drawn 
argely from the results of personal observation.” 
n After discussing the geological history, topography, climate, 
eneral features, botany and faunal position of this interest- 
mg region, Dr. Merriam begins his account of the forty-two 
mammals of the Adirondacks, beginning with the Carnivora. In 
the introduction he describes a “ mixed flock” observed during 
the fall migrations. “ At this season one may hunt for hours and 
scarcely see a bird, when suddenly he finds himself surrounded 
by a host of individuals, representing many species and pertain- 
_ ing to widely different families.” In one such flock there were 
_ at least fifty robins, all very noisy, several blue jays, large num- 
bers of slate-colored snow birds, a few white-throated, song and 
fox-colored Sparrows, a couple of winter wrens, and one Nashville 
espi beside these. near at hand, were a dozen chickadees, 
EAE EP eee a 
Stee T E 
> 
an equal number of yellow birds, and a few golden-crowned 
