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Show 1887.] MR. G. E. DOUSON ON THE GENUS MYOSOREX. 577 the third tooth has not the prominent anterior and posterior cusps so well developed in M. varius. There is no minute touth between the second and third mandibular teeth. (For measurements see table p. 578.) Hab. Cameroon District, West Africa. The type, a skin with skull, was collected by Captain R. Burton, and is preserved in the British Museum (Natural History) ; a second specimen, a well-preserved example of an adult male, in alcohol, has formed the basis of the above description, and has furnished the measurements given in the table at p. 578. 3. MYOSOREX JOHNSTONI, n. sp. Very slightly larger than Crocidura etrusca, and therefore almost the smallest mammal known. The tail is even shorter than in that species, shorter than the body without the head, and clothed characteristically with short, even-sized hairs. The ears are moderate and clothed with very short hairs. Both the manus and pes are moderate in size, with short claws, and covered with thinly-spread short fur. As in M. morio there is a very large lateral gland in the male, but as no female specimen has yet been obtained, its condition in that sex is unknown. So far as can be ascertained from the inspection of a single male specimen preserved in alcohol the colour of the fur is dark brown above, slightly paler beneath. Skull of Myosorex johnstoni. Although the animal is but slightly larger than C. etrusca in general measurements, yet its skull is considerably larger in all dimensions. The teeth agree with those of the other two species in the reduced size of the third upper incisor (see woodcut above), but correspond most closely with those of M. morio from the same part of Africa in their general form and in the position of the penultimate premolar, which stands in the tooth-row and is not minute as in M. varius. The anterior mandibular tooth has two notches, as in the other species, for the posterior basal cusp of the first upper incisor and for the cusp of the second incisor. There is no rudimentary tooth (such as I have described in M. varius) between the second and third mandibular teeth. (For measurements see table p. 578.) The type, a full-grown male specimen, well preserved in alcohol, was obtained by H. H. Johnston, Esq., H.M. Vice-Consul for the |