ST ge eee re ye pee Eevee is Sot A eae ance eR petal Mee Sie rae OT Se Ee TR ee Vays 
THE QUADRUPEDS OF ARIZONA. 539 
him; while she bounds off, with terror and regret, and 
soon solaces her ad interim woe with another conquest. 
This animal takes its common name from the peculiar 
shape of its horns, which have a single somewhat trian- 
gular prong jutting from near the base or middle of the 
shaft, and sometimes flattened or somewhat bent like a 
scroll. But the position of this prong, as well as its 
shape and size, varies greatly; while the length and 
apical curvature of the main shaft is equally variable. 
Searcely any two pair of horns are precisely similar in 
these points, and a second species has even been charac- 
terized upon these differences alone. The curious reader 
will find a great variety figured in Plate XXV. of Profes- 
sor Baird’s work. A pair which I obtained in Arizona 
Were of very unusual shape. They were most like Fig. 
890a of the plate referred to, having a very large, flat, 
triangular prong springing from their very bases; but 
their tips bent over till they pointed directly downwards, 
in a direction quite parallel to the axis of the shaft, which 
is a degree of curvature rarely seen. It is scarcely 
necessary to add, that the Antelope’s horns are not decid- 
uous, like the antlers of the deer, but permanent, like the 
horns of rams and bulls. 
Arizona has woods and plains which are roamed over 
by the deer and antelope; but a great portion of her 
territory is unfitted for either of these, being upheaved 
into lofty mountain ranges and precipitous cliffs, or rent 
asunder in yawning chasms, and rocky canons, by the 
rude shocks it has undergone through the convulsive vio- 
nce of volcanic action. Masses of plutonic rocks are 
piled up in wild confusion, and black lava vomit is poured 
over miles of surface. In the most rugged and broken 
regions, rarely visited by man, or ‘netiondnaibile to him, and 
