No. 50.] 
207 
Localities. Near Salem, Albany county, and at Schoharie. They 
most abound in the grit above mentioned, but also occur in a black 
limestone above, and more rarely in the gray limestone over the latter. 
This is the fossil well knov^rn as the bilobite, which is a crushed speci- 
men. 
Calceola plicata. 
Shell longitudinally striated ; plicated towards the aperture, the mar- 
gin of which is waved. 
Locality. Schoharie ; Mr. Gebhard. Occurs in the shaly limestone. 
Delthyris macropleura. 
Shell large, with about six broad rounded ribs finely striated longi- 
tudinally ; middle of the superior valve with a very broad and promi- 
nent rib, and there is a corresponding depression on the opposite valve. 
Localities. Near Clarksville and Schoharie In shaly limestone, 
abundant. 
Crinoidea. 
* Lepocrinites Gebhardii. 
By this name I introduce a singular fossil found by Mr. Gebhard. 
The body is composed of plates of unequal sizes, a few of which have 
ambulacra, comiecting this fossil with the echinodcrmata ; lower half of 
the column apparently solid and traversed by a pentangular canal. 
T. A. CONRAD, Palceontologist. 
* For geological position, see table of Schoharie fossils. 
