IN WESTERN LTBERFA. 149 



from his head-quarters at Schieffelins ville , eastward 

 from Monrovia , the valley of the Juuk River and its tribu- 

 taries. . 



It is not my intention to point out here the importance 

 of Liberia as to the geographical distribution of animals , 

 the following lists being sufficient to effect this task. I 

 only wish to call attention to some of the most striking 

 facts which show that there is a certain difference between 

 the fauna of the lower coast-regions and that of Liberia, 

 though I am unable to show the place where this line of 

 demarkation is to be sought for. As 1 hope Mr. Stampfli 

 or some other naturalist will proceed farther down the 

 coast and also throw light upon the zoological condition 

 of the Ivory-Coast. Certainly the fauna of the country 

 explored by us has much more connection with that of 

 Sierra Leone than with that of the Gold Coast. Instances 

 of animals , not going farther down than Liberia and such 

 found hitherto only in this latter country are Colobus ursinus , 

 representing C. vellerosus of the Gold Coast , Colobus polyco- 

 mus and Cercopithecus callithrichus , from the Senegal to Li- 

 beria , ^4w^z7ope ( Ce^oAa/op/m.s) doria and A. sylvicultriv ïonnd 

 with certainty hitherto only in Liberia and the inter- 

 esting Hippopotamus ( Choeropsis) liheriensis. Something si- 

 milar is the case with a number of birds, though whole 

 groups , for instance all the eight species of Liberian Horn- 

 bills , are also met with on the Gold Coast down to the 

 Gaboon. Psittacus timneh is the Liberian representative of 

 the common P. erythacus which does not occur beyond the 

 western boundaries of the Gold Coast, and the same thing 

 is the case with Agapornis swinderniana , which represents 

 the common A. pullaria. 



On the other hand , there are some birds , for instance 

 Halcyon hadia and Columba unicincta , which had hitherto 

 been found both in Liberia and at the Gaboon , without 

 having been met with in the intermediate regions. This 

 peculiarity however need not lead to the conclusion that 

 these birds will only inhabit the above mentioned coun- 



Notes from tlae Leyden ]VIu.seu.m , Vol. "VII. 



