434 General Notes. [Api 
in the Erie canal at Syracuse, but never in lakes. It seemsto 
prefer small streams with muddy bottoms, and there to form is 
lated colonies. But one sometimes meets species in unexpected. 
localities. Margaritana rugosa Barnes, is a river species, butis 
abundant in Onondaga lake, and Unio rosaceus De Kay, generally 
restricted to Seneca lake, I have collected in Cayuga lake. Ui 
pressus is still obtained at Norman’s Kill, and Coleman T. Robin- | 
son collected it near Buffalo, N. Y—W. M. Beauchamp. i 
Tur American Horse.—lIt is generally understood, and tht 
fact (if it is a fact) has been almost universally accepted, that the 
horse was unknown in the new world previous to the advent o 
Spaniards in North and South America. Late discoveries a 
investigations, extending from Bering’s straits to Patagonia, hat 
revealed the fact (see Professor Marsh in Encyclopedia), thatit 
North and South America we have twelve fossil species of the 
genus Equus, and thirty more species allied to them. Y 
Having had occasion to send to Paris to purchase some rat 
maps of the fifteenth and sixteenth centuries, I received among 
them the map of Sebastian Cabot, “ Piloto Mayer’ of E 
the Fifth, King of Spain. This map, drawn ina circular projection 
by Cabot himself, on which he has delineated his own and $ 
discoveries of John Cabot, is of singular value as repre pi + 
sixteenth century, and was drawn u prior to the a A 
Sebastian Cabot having left for England, to take service 
1547, this map was drawn by him while h i 
service previous to that date. i 
Now it is an incontestable fact that Cabot went 1n 
distance inland, returning to Spain in 1530. 
pon examining that map I find that tne 
explored up to the 25th parallel of north latit 
names given to its branches and all prominent pol” 
addition he has marked on the map pictures O 
inent animals, and some trees, and that at t 
Plata. with the puma and parrot, or perhaps the cone 
given the horse as apparently a quadruped that ~~ 
those vast plains of the Gran Chaco, where to day oa i 
countless herds. It may be claimed that this is not pr" 
native origin; but we claim that it is a fair pres 
neither Spaniards in Peru or other parts of Americ’ 
explorers. The period was too short, and the distant 
from the Spanish possessions in Peru across the v 
