SIXTY-EIGHT FEET BULL SPERM WHALE TAKEN NEAR RONA’S VOE, SHETLAND, ON JUNE 25,
1903 (from a photograph by W. J. GORDON), AND METHOD OF FEEDING OF THE SPERM
W H A L E ............................................................................................................. ......... to face p. 288,
SKULLS OF BRITISH ODONTOCETI . . . . • • » *97
ADULT MALE AND FEMALE BOTTLE-NOSED WHALES, CUVIER’S WHALE AND SOWERBY’S
W H A L E ........................................................................................... ......... • • • » 3°5
PORPOISES AT PLAY AND KILLER. From a photograph lent by A. H. Cocks . „ 3*5
PILOT WHALES ON THE MOVE . . - . ....................................................... .. • • » 33°
PILOT WHALES CAPTURED IN WElSDALE VOE, SHETLAND, ON FEBRUARY 7* 1903. From
photographs 33*
COMMON DOLPHINS. From a photograph by the Earl of March . . . . . . . . 343
A «SCHOOL’ OF COMMON DOLPHINS. . . . . . . . . ■ 344
A ‘SCHOOL’ OF BOTTLE-NOSED DOLPHINS. From a photograph by R. Lincoln Co c k s ...................... 346
THE MAMMALS
OF
GREAT BRITAIN AND IRELAND
Order RODENTIA (continued)
Group or Sub-order D u p l ic id e n t a t a
In this group of the Rodents two pairs of upper incisor teeth are present
in adults, the additional and smaller teeth being behind and not at the side of
the usual pair. The group embraces the Leporidce or Hares and the Lagomyidæ
or Pikas ; only the first family are now represented in Britain, At birth three
pairs of upper incisors are present, but the outer tooth on each side is lost early.
The enamel extends all round the incisors, but is thicker on the front surface
than on the back. The molars, which have transverse enamel folds, are rootless.
The fibula is anchylosed to the tibia and articulated with the os calcis. The
intestines are long and there is a large cæcum.
Family L e p o r id j e
HARES AND RABBITS
In the Leporidce we have mammals of medium size, with long ears and short
and usually upcurved tails; the hind limbs are considerably longer than the fore
limbs; there are no eyelids. The clavicles are imperfect. The skull is compressed,
the frontals broad; the post-orbital processes are narrow where they
join the frontals, and then expanding form the upper rims of the orbit.
Dentition.— I. P.M. f, $; M. f, f.— Toes, 5 and 4.