98 MR. R. E. HOLDING ON THE HORNS [ Feb. 2, 
Copulation may take place in the beginning of July, and 
gravid females have been found in Juneand July, with foetuses of 
about 1 metre’s length. 
Their food in the summer months in the North Atlantic is. 
(as far as has been observed) plankton-crustacea. 
EXPLANATION OF THE PLATES. 
PratE XXYV. 
Balena glacialis, male, from the Hebrides, July 8, 1908. 
PratE XXXVI. 
Balena glacialis, male, from the Hebrides, July 6, 1908. 
Pratt XXVII. 
Balena glacialis, female, white-bellied, from the Hebrides, July 6, 1908. 
February 2, 1909. 
Freperick Ginter, Esq., Vice-President, in the Chair. 
Mr. C. Tate Regan, M.A., F.2Z.8., exhibited specimens of the 
Char of Lough Melvin (Salvelinus grayi, Gimth.) and of the 
Char from a little loch under Ben Hope, Sutherlandshire, recently 
described by him under the name Salvelinus maxillaris. He 
pointed out the differences between the two forms, and called 
attention to the interest attaching to the study of this too much 
neglected group of British freshwater fishes. 
My. R. E. Holding exhibited several skulls and photographs of 
the St. Kilda or Hebridean Four-horned Sheep, and made the 
following remarks concerning the horns in this variety :— 
“That there are several well-defined breeds of the domesti- 
cated Sheep which carry normally four horns is now well known. 
Explanation of Text-fig. 6 (see opposite). 
A. Head of St. Kilda Ram, showing wide type of the horns. Length of upper horns 
182 inches each. 
B. Ditto, showing the narrow or more contracted type. The upper horns forming 
almost a complete circle; in both specimens the lower horns had to be cut to 
prevent their growing into the jaw. 
C. Photograph from life (by E. M. Machugh) of an exceptionally good head of a 
well-known Scotch black-faced four-horned breed, which was established some 
thirty years ago from an odd Ram Lamb which occurred in the flock. The 
‘ owner taking some interest in the matter, was enabled by selection to cause 
the variety to become permanent, some remarkable heads being the result. 
D. Skull from the same flock as B, showing two separate horn-pedicles or supports 
(1), covered by one sheath (2), indicating that these supernumerary horns 
have their origin in duplicated centres of the frontal bone. The upper left 
poimting backwards is an unusual variation. 
E. Upper part of the skull of a St. Kilda Ram Lamb at six weeks old, showing an. 
early stage in division of the bony pedicle which supports each horn. QO, occi-. 
pital; P, parietal; F, frontal; N, nasal. 
