1S87.] MR. G. h\ DOBSON 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 tOoth between 

 the second and third mandibular teeth. 



(For measurements see table p. 5/8.) 



Hah. 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 tlie 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 cha- 

 racteristically with short, even-sized hairs. The ears are moderateand 

 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 Mi/osorex juhnstoni. 



Although the animal is but slightly larger than C. etnisca in 

 fieneral 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 penul- 

 timate 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 rudi- 

 mentary 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, B-;q., H.M. Vice-Consul for the 



