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Show 1866.] DR. J. E. GRAY ON THE SKULLS OF DOLPHINS. 211 The following papers were read :- 1. Notice of a New Bat (Scotophilus welwitschii) from Angola. By Dr. J. E . G R A Y . (Plate XXIV.) Among an interesting series of Bats from Angola, collected by Dr. Welwitsch, and most kindly presented to the British Museum, is a very interesting and ornamental species of Scotophilus, with the wings coloured like Vespertilio pictus of Pallas. This coloration of the wings seems common to several Bats belonging to different genera; but I have not before observed it in a species of Scotophilus. SCOTOPHILUS WELWITSCHII. (PI. XXIV.) Brown, paler beneath ; hair of the back black, with brown tips, which are longer and paler on the hairs of the under surface. The ears rather elongate, longer than head, tip rather acute ; tragus elongate, lanceolate, acute, nearly half as long as the ear. The wings blackish brown, yellow-dotted, and yellow (or red brown perhaps when alive) near the body, and on and near the arms and fingers, and between the shoulders and arm-bone ; interfemoral membrane yellow, black-dotted, and with a dark hinder edge, the upper surface near the base of the tail hairy ; heel-bone elongate, as long as the shin. Feet pale yellow; toes black at the end; wings to the base of the toes. Thumb-upper joint black, much longer than the lower, which is yellow. The face hairy to the end of the nose, just above the nostrils. Upper cutting-teeth 1.1?, large, blunt; premolars ^k Y y, the front upper large, triangular ; the hinder small, rudimentary. Forearm-bone 2 inches 1 line long. Hab. Angola (Dr. Welwitsch; B.M). 2. Notes on the Skulls of Dolphins, or Bottlenose Whales, in the British Museum. By Dr. J. E . G R A Y , F.R.S., V.P.Z.S., F.L.S., &c. Having had occasion to examine and determine a considerable number of skulls of Dolphins since the manuscript of the second edition of the ' Catalogue of Seals and Whales in the British M u seum,' which has just been published, was sent to the press, I was induced to reexamine the whole series of them in the British Museum for the purpose of determining what were desiderata. The usual consequence followed, that I observed the importance of some characters that had been before overlooked, and thought that I could improve the manner in which the species were grouped together, so that they could be more easily distinguished from each other. |