The skull and dentition of this animal are essentially soricine. The Thibetan species (A. squamipes) is described as being over four inches in length, of a greyish colour, with a greenish-brown tinge; feet and nails whitish. It lives in burrows which it digs in the earth. I think it should properly come after the moles, which it resembles in some particulars.
[FAMILY ERINACEIDÆ—THE HEDGEHOGS.]
| Dentition of Hedgehog. |
The molar teeth broad; the hinder ones nearly square, the tubercles on their upper surface rounded; the other teeth are three incisors on each side, of which the inner one is considerably larger than the rest; behind these, separated by a little gap, come three premolars gradually increasing in size, then one having much the appearance of a true molar, but furnished with a cutting edge; then three molar teeth, two of which are nearly square with strong tubercles. The last molar is small. In the lower jaw the lowermost incisor is very large, and projects almost horizontally forwards, and it is followed by three small teeth now acknowledged to be premolars, with another large premolar, which is of the nature of a carnassial or cutting tooth acting on the one in the upper jaw. Then three molars as above, two large and one small, but with sharp tubercles. The skull has a more carnivorous form; it has "a complete zygomatic arch, and the tympanic bone forms a bundle-like swelling on each side of the back of the skull." Feet pentadactylous or five-toed; legs very short. The tibia and fibula (two bones of the shank) are joined together. The back is clothed with hair intermixed with sharp spines or bristles. Tail short or wanting entirely.
The European hedgehog is well known to most of us. Few boys who have lived a country life have been without one at some time or other as a pet. I used to keep mine in a hole at the root of an old apple-tree, which was my special property, and they were occasionally brought into the house at the cook's request to demolish the black-beetles in the kitchen. These they devour with avidity and pursue them with the greatest ardour. They also eat slugs, worms, and snails; worms they seize and eat from end to end, like a Neapolitan boy with a string of maccaroni, slowly masticating, the unconsumed portion being constantly transferred from one side of the mouth to the other, so that both sides of the jaws may come into play. Dr. Dallas quaintly remarks on the process: "This must be an unpleasant operation for the worm, much as its captor may enjoy it." Toads, frogs, mice, and even snakes are eaten by the European hedgehog. It would be interesting to find out whether the Indian hedgehog also attacks snakes; even the viper in Europe is devoured by this animal, who apparently takes little heed of its bite. The European species also eats eggs when it can get them, and I have no doubt does much damage to those birds who make their nests on the ground.
Few dogs will tackle a hedgehog, for the little creature at once rolls itself into a spiny ball, all sharp prickles, by means of the contraction of a set of cutaneous muscles, the most important of which, the orbicularis panniculi, form a broad band encircling the body which draws together the edges of the spiny part of the skin. There is a most interesting account of the mechanism of the spines in Mr. F. Buckland's notes to White's 'Natural History of Selborne,' vol. ii., page 76. A jet of water poured on to the part within which the head is concealed will make the creature unroll, and it is said that foxes and some dogs have discovered a way of applying this plan, and also that foxes will roll a hedgehog into a ditch or pond, and thus make him either expose himself to attack or drown. Gipsies eat hedgehogs, and consider them a delicacy—the meat being white and as tender as a chicken (not quite equal to porcupine, I should say); they cook them by rolling them in clay, and baking them till the clay is dry; when the ball is broken open the prickles come off with the crust.
| Hedgehog. |