TURTHER NOTES ON NEW JERSEY FISHES. 717 
purely aquatic bird could or would ascend and cross the 
western Cordillera, and then ascend to an icy, solitary lake 
on the shoulder of one of the loftiest volcanoes in the east- 
ern range, 2,500 miles from its native place. Forbes found 
Cyclas Chilensis (formerly considered peculiar to the most 
southern and coldest part of Chili at the level of the sea) 
abundant in fresh-water ponds in the Bolivian plateau near 
La Paz, 14,000 feet high. Do not these facts point to 
changes in the Andes on a grand scale, and at a rate which, 
measured by the time required for a change of species, must 
be termed rapid ? 
Alca impennis Linn. Original of Audubon’s figure. A 
notice of this specimen was published in the American 
Naturalist, 1869. 
Mormon cirrhata Pall. Original of Audubon’s figure. 
Phaleris cristatella Pall. Original of Audubon’s figure. 
FURTHER NOTES ON NEW JERSEY FISHES. 
BY CHARLES C. ABBOTT, M.D. 
Fig. 163. 
Hybognathus. 
Durine the month of February of the present year 
(1870), Professor George H. Cook, State Geologist, sent to 
the author of this paper a number of “frost-fish,” or “smelt " 
(Osmerus mordax), and among them was the single speci- 
men figured above. On submitting this cyprinoid to Pro- 
