Theories and facts as to palaeogenesis in its probable influence on the coloration of animals / by Jonathan Hutchinson.

  • Hutchinson, Jonathan, Sir, 1828-1913.
Date:
1912
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Licence: In copyright

Credit: Theories and facts as to palaeogenesis in its probable influence on the coloration of animals / by Jonathan Hutchinson. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    mothers much alike, and the father one and the same. All had the buff-brown face peculiar to the Southdown, and the brown legs, but they varied a little as to depth of tint. The Lambs showed marked differences one from another. These were clearly noticeable on their faces, and were best seen about the end of the first week, from which time they became gradually less distinct. The cheek patches of white were visible as three distinct ones in many, but in not a few were merged in a single one. Crescentic patches curving round the inner canthus were defined in many, but in many these patches, those of Xanthelasma, were extended into a somewhat indefinite circle surrounding the eye. In a few, rather obscure white bars crossed the root of the nose. The Lemurs. A Madagascar Lemur, which has been named Prosimia rufipes, has been described and figured by Dr. Gray in the Zoological ‘ Proceedings,’ 1872. It shows the whole body and limbs in two specimens, a male and female, of a reddish brown tint every- where brindled with black. The under throat is white, but with streaks. The tails, fairly bushy, show no rings. Other Lemurs, figured in the same journal under the name Cheirogaleus typicus, show very similar coloration. In all a broad circle of deeper colour surrounds the eye, and gives the animal the appearance of wearing clumsy spectacles. The Eed Lemur figured by Cuvier has a red body and limbs, but a black tail, face, hands, and feet. Its feet show a remarkable crescentic band of white crossing the dorsum just below the knuckles. (Lemur ruba, Cuvier.) A Monkey figured by Cuvier shows the whole of its back of a brown tint with stripes, while its fore quarters, shoulders, and neck are blue-black, as well as its hinder extremities. (Midas ursidus.) Lemurs and Face Markings. Several Lemurs show a vertical band of white from the upper part of the forehead to the nose, leaving the cheeks with the parts surrounding the eyes of a dark tint. Lemurs often Brindled. The Lemurs are very frequently characterized by brindled bodies, and tails not showing abruptly margined streaks or spots. The under surface, both of throat and belly, is usually of paler tint, oi possibly white, and this frequently includes the chin and cheeks up to the ears. Eats and Mice. The Eat tribe shows for the most part greyish or brownish colours of the face, back, and limbs, with tails almost bare and not tufted. In all the belly is white, and in many the feet are bare.