PLATE V 
Fig. 1. Modiolopsis modiolaris, Hall. A, two valves, as seen on a single slab ; 
original of Fig. la, on plate 81, Paleontology of New York, vol. I; preserved in 
the New York State Museum at Albany, New York, as No. 9501-1. In a sandy, 
somewhat micaceous shale at Rome, New York. B, C, ventral and dorsal pro- 
files, prepared by Dr. Ruedemann, but not intended for publication. 
Fig. 2. Modiolopsis modiolaris. Hall. A, two valves, as seen on a single slab; 
original of Fig. 15, on plate 81, Paleontology of New York, vol. I; No. 9501-2 in 
New York State Museum. In a gray sandstone from Rome, New York. B, C, 
ventral and dorsal profiles, sketched by Dr. Ruedemann. 
Fig. 3. Orthodesma nasutum, Conrad. A, left valve, injured along the upper 
margin anterior to the beak; outline here incorrect; original of Fig. 2, plate 81, 
N. Y. Pal. I; No. 9600-1, in N. Y. State Museum. Labeled as coming from 
Lorraine, Jefferson county. New York. B, C, ventral and dorsal profiles, sketched 
by Dr. Ruedemann. 
Fig. 4. Pholadomorpha pholadiformis. Hall. Original of Fig. 15, on plate 
XXX, accompanying the original description in Report on the Geology of the 
Lake Superior Land District, by Foster and Whitney, in 1851. In type series 
1365, preserved in the American Museum of Natural History, in New York city. 
Specimen poorly preserved. Outline, as interpreted by the writer, indicated in 
ink. The elevation above the anterior muscular scar is the beak, near which 
the specimen is injured by crushing. 
338 
