MAMMALIA. 163 
Skull and horns. 
Skull and horns. From Mr. Argent’s Collection. 
The Domestic Sheep offer many varieties in the form and even 
the number of the horns, and especially in the texture of their 
fur. Many in cold and temperate climates, which are covered 
with wool, when they are moved to a warmer climate become 
permanently covered with short hair. 
Dr. Gardiner in his journey from Pernambuco to Crato passed 
through a flock of several hundred sheep. ‘“ The excessive heat 
of the climate had wrought a remarkable change in their appear- 
ance, their skin being wholly destitute of wool, and replaced by 
a short hair not unlike that of a cow.” —Trav. 163. 
But some kinds even in England, which are covered with wool 
in the winter, are covered with short adpressed hair in the sum- 
mer. This is the case with the West India Sheep, noticed by 
Mr. Blyth (Ann. Nat. Hist. vii. 255). They also present several 
varieties in the form of the tail. 
Pallas divides the Russian Sheep into four varieties, according 
to the shape of the tail, thus :— 
a. O. dolichura occidentalis, Pallas, Spic. Zool. xi. 60; Zool. 
Ross. Asiat. 233. 
b. O. platyura media, Pallas, S. Z. xi. 78; Itin. poster. ii. ; 
Zool. Ross. Asiat. 233. 
O. Steatopyga orientalis, Pallas, S. Z. xi. 63. 80. t. 4; Nov. 
Comm. Petrop. v. 31. 343. t.8; Zool. Ross. Asiat. 233. 
d. O. brachyura borealis, Pallas, Spic. Zool. xi. 61; Zool. Ross. 
Asiat. 233. 
$ 
DoMESTIC VARIETIES. 
1. Spanish Sheep, Shaw, Zool. 
Ovis Hispanicus, Linn. Amen. Acad. iv. 174. 
Merino, Desm. N. Dict. H. N. t. 918. f. 1, 2. 
Merino Sheep, Knight, Mus. Anim. Nat. f. 682. 
British Middle-wooled Sheep, Knight, Mus. An. Nat. f. 684. 
Merino Ram and Ewe, Low, Dom. Anim. Brit. Islands, ii. t. 12. 
2. Common Sheep, Penn. Syu.; Hist. Quad. i. 33, 
Ovis rusticus, Linn. Amen. Acad. iv. 174. 
O. Gallica, Desm. 
O. brachyura, Pallas, Spic. Zool. 
O. leptura, Schreb. Saugth. t. 290 a. B. 
a. Hornless Sheep, O. Anglicana, Linn. Amen. Acad. iv. 174, 
Ovis A. Anglicus, Eraled, 
Lincolnshire Sheep. 
