112 ME. G. BUSK ON THE ANCIENT OR 



the form of the trochanter and of the digital fossa behind it, these bones correspond 

 exactly with the femur of C. elaphus, in which the diameter of the head is l"-2 ; in 

 C. harbarus \"1. Although found at a considerable depth in the Genista fissure, these 

 two specimens, from their light porous condition and the complete absence of stalag- 

 mitic deposit, cannot be supposed to belong to the most ancient fauna, and are 

 probably referrible to the human period. Not so with the few other remains of the 

 femur, which consist of — 



2. Three portions of the shaft, between five and six inches long, and all with a least 

 circumference of between 3"'2 and 3"-4. That they are cervine, and do not belong to the 

 gigantic form oilhex met with in the breccia, is proved by the great extent and depth of 

 the pit behind the inner condyle and the strong development of the linea aspera. The 

 only other two specimens consist of the distal end, with the articular portion complete. 

 The dimensions of this end in one case are 3"-5 X 2"-7, and in the other 3"-3 X 2"-4. In 

 C. elaphus the corresponding dimensions are 3""3x2"'5, and in C. barharus 3"'lx2"'2. 



All these specimens are thoroughly fossilized, and they were thickly incrusted with 

 hard ferruginous stalagmite. 



9. Tibia. 



Portions of fourteen or fifteen tibiae are preserved — some extracted from the hard 

 breccia, others more or less free, but all coated to some extent with crystalline stalag- 

 mite. Six of the specimens consist of merely the shafts, without either articular end. 

 One has the distal epiphysis detached ; and, from the general character of the bone, it 

 would appear to have belonged to the same animal as two of the metacarpals above de- 

 scribed, to which also may perhaps be assigned a metatarsal of the same age and in the 

 same condition. The least circumference of these shafts varies from 3"'5 to 2"'7, the 

 younger-looking bones being, of course, the slenderer. 



There are two fragments of the proximal end, in one of which the epiphysis has been 

 detached, and the surface is covered with thick incrustation ; in the other instance the 

 proximal articular surface is entire, and measures 2"-7x2"'7. 



Several examples of distal portions, with the trochlea, give the full characters of that 

 part. As is the case with the other bones, these specimens, as regards the articular end, 

 vary in size from l"-3xl"'5 to l"-5xl"'9, the intermediate forms being l"-3xl"'8 and 

 l"-4 X 1"'9. Into the smallest of these specimens the astragalus of a Highland Stag fits 

 so exactly that both might well have belonged to the same individual. 



It is impossible to distinguish any of them from the tibia off. elaphus. But besides 

 the above there are two proximal fragments with the articular surface entire, which 

 measures only 2"*1 X 2"'5, and which would seem to be referrible to C. barbarus, in which 

 the surface in question measures 2"'4x2"'5. Both of these specimens are in the same 

 mineral condition as the rest, although one is said to have been foimd above the 

 stalagmite floor of Genista Cave, and the other at a considerable depth in the East 

 Fissure. 



