246 MR. BUSK ON THE REMAINS OF 
1-25: external 1-15; and anterior 0"-75, and 0'5 on either side of the radial ridge. 
The anterior aspect of the remaining portion of the shaft presents at the upper part a 
very deep and spacious radial fossa, from which is prolonged obliquely downwards and 
inwards a shallow uneyen sulcus, about 0:6 wide, the outer border of which is formed 
below by the prominent ridge, the situation of which is indicated by the letter (7) in the 
accompanying figure, which is intended to show the outline of the transverse section Soh 
the shaft at a distance of about 3'°6 below the middle of the 
radial sulcus, or at a distance equal to about twice the trans- 8 astt (7 
yerse diameter of the internal condyloid facet. The external 
surface of the bone is smooth and concave above, slightly 
convex below; the internal is also very smooth, even, and ia 
nearly flat below, passing above into a rather deep sulcus be- 
tween the inner articular head and the base of the olecranon. is 
The posterior angle is very acute, but above it is broken ob- 
liquely off. The internal angle is thick and rounded, and pa 
the external rounded and slightly carinate. 
4. A second well-marked fragment of the ulna is shown in fig. 25. It is the olecranon- 
process of the left ulna. Anteriorly it exhibits nothing but an irregularly fractured 
surface, and no vestige of the articular surface. It is also slightly broken on the inner 
face, and below it is fractured transversely 3” below the summit. The ap. d. of the 
upper end, measured at a point where the bone is entire, on the outer side of the 
median line, is about 2"; but it doubtless projected considerably in front of this in the 
median line when entire. In size, colour, and general condition this fragment closely 
corresponds with the one just described, and it may probably be regarded as belonging 
to the opposite ulna of the same individual. 
5, A third portion of a left ulna, corresponding in dimensions with the above, is also 
contained in the collection. Though clearly referrible to the same species, it would 
seem to have belonged to a younger animal; and as it is a good deal injured, apparently 
by recent fracture, it is needless to enter into any particular description of it. 
If we compare the characters of the ulna of E. melitensis as displayed in the specimens 
above described, with those of the same bone in E. africanus, very considerable differ- 
ences, besides mere size, will at once be perceived. 
(1) Avery striking dissimilarity exists in the form and proportions of the articular sur- 
face. In an ulna of the African Elephant 31” long, the transverse diameter of the 
upper articular end is 7-6; the tr. d. of the inner facet measured from the middle 
of the radial sulcus 4-1, and its ap. d. 3""1; whilst the length of the outer facet is 
3"-4, and its width 2!"1. 
These dimensions of the facets therefore, as compared with the transverse diameter 
of the articular head, taken at 1-000, in the respective cases, stand thus :— 
