Brewer.] 4 [January 17, 
upon which they sit perfectly motionless, in the manner of a thrush. 
If not farther disturbed they soon return to their search for food 
among the leaves. If greatly startled they take a long flight among 
the bushes and cannot be again found. Their only note was a single 
sharp chirp, uttered when surprised. They were all remarkably fat 
and were nearly all in immature plumage. 
A letter from Dr. Brewer announcing the’ following dona- 
tions to the museum from Mr. Harvey B. Bradley, was also 
read :— 
Nest and eggs of Dendroica castanea, D. coronata, and Ampelis 
carolinensis. The nest of the first species is new to our collection, 
and is an acquisition of great value, having been found only once 
or twice before. The nest of D. coronata is also quite rare, and is 
interesting as coming from so southern a locality as Upton, Maine. 
January 17, 1872. 
The President in the chair. Seventeen persons present. 
The following papers were read : — 
Tor Non-REVERSIONARY SERIES OF THE LIPAROCERATID&, 
AND REMARKS UPON THE SERIES OF THE ALLIED FAMILY 
DactTyLoip&.. By A. Hyatt. 
In my last communication to this Society I endeavored to trace the 
reversionary series of the Liparoceratide, and necessarily left out of 
consideration all those species which did not belong to one or the 
other of the truly reversionary series. 
Of these last there is a very curious group, all the species of 
which, at a young stage, resemble more or less closely the young 
of the original type, Microdoceras Birchu, but betray by their de- 
velopment, adult characteristics and geological succession, a closer 
affinity to Deroceras Dudressiert. 
