1841.] A Monograph of the species of Wild Sheep. 875 



A full grown pair of horns measure 321 inches over the curva- 

 ture, and 1 1 inches round at base ; their widest portion apart, mea- 

 sured outside, is 2 feet, the tips converging to 8 inches, and span 

 from base to tip also 8 inches : they are subtriangular, much com- 

 pressed laterally, the anterior surface 2| inches broad at base, with 

 its side-angles about equally developed, and the posterior part of the 

 section tapers rather suddenly to a somewhat acute angle ; eight 

 years of growth are very perceptible, which successively give 12, 

 7, 4, 3, 3, 11, 11, and l inches ; they bear considerable resem- 

 blance to those of the Moufflon Sheep, but differ in being very 

 much larger, and in the circumstance of the outer front-angle be- 

 ing as much developed as the inner one, and they have not the 

 slightest tendency to spire, but describing three-fourths of a circle, 

 and originally diverging as in a common Ram, they point towards the 

 back of the neck, somewhat as in O. Tragelaphus. Another and 

 younger specimen, however, has a decided spiral flexure outward, 

 more especially towards the tip, and has also the outer angle much less 

 developed than in the corresponding terminal portion of the former. 

 This pair had grown to 1 1 inches long, with the tips 141 inches apart ; 

 only one year's growth, and that apparently incomplete, is however ex- 

 hibited, and the curvature is likewise less than in the older specimen. 

 The portion of skull attached is also so much smaller, that I think it 

 prudent to hesitate in identifying it as specifically the same. The pos- 

 terior margins of the orbits are but 41 inches apart, whereas in the 

 other they are 51 inches. There are no materials for extending 

 the comparison, but a few more dimensions may be given of the smaller 

 one. The greatest width of this skull at the posterior portion of the 

 zygomee is 5 inches, and the orbits are 31 inches distant where most 

 approximated : the series of 5 developed molars occupied 2J inches ; 

 width of second true molars apart, posteriorly and externally, 21 

 inches ; of anterior false molars, measured outside and before, \^ inch ; 



any trace of this lengthened hair, and is represented with very short horns, indicating 

 that the individual was probably young. 



Mr. Vigne's coloured portrait represents a much younger male than that figured by 

 Sir Alexander Burnes, and I should say in winter vesture; the same gentleman had 

 also a coloured figure upon a large scale of the head of a still younger specimen, 

 which was coloured similarly to the other, or of a livid hue, without any white 

 muzzle. I possess copies of both figures. — E. 13. 



