432 On an undescrihed GtiereSa. 



This is another widely distributed species. Budde-Lnnd 

 says that it inhabits the whole of Europe and also the neigh- 

 bouring- regions of Asia and Africa, and that it has been 

 carried to many other j^laces probably by navigation. 



Budde-Lund records it also from Melbourne, but so far it 

 has not been met with from any other part of Australia, and 

 it is not represented in any of my collections from that 

 country. 



In New Zealand it appears to be abundant in the town of 

 Nelson; specimens were sent me from there many years ago 

 by the late Mr. J. C. Gully, and I have recently received 

 many specimens from Mr. F. G. Gibbs, who tells me that it 

 appears to be as common in Nelson as PorcelUo scaler. I 

 have also a specimen taken near Mount Egmont and 

 forwarded to me by the late Mr. S. H. Drew, but up to the 

 present it lias not been met with in any other localities, in 

 this respect forming a marked contrast to PorcelUo scaber, 

 which has overrun the wliole colony. 



XLIX. — An imdescrihed Guereza. 

 By R. Lydekker. 



Major Powell-Cotton has sent from Qugo, Central Equa- 

 torial Africa, the skull and skin of an adult Guereza monkey 

 belonging to the black-and-white group, which appears to 

 indicate an undescrihed form. The specimen closely re- 

 sembles Colobus palliatus of British East Africa (which may 

 be only a local form of the western C. anyolensis) , but is 

 distinguished, by the absence of a white superciliary ridge 

 connecting the two face-tufts and of a white perineal patch, 

 as well as by the terminal half of the tail being grey, Avitli a 

 white tip, instead of the whole terminal third being white 

 and the middle third grey. The new form may be best 

 regarded as a subspecies of C. palliatus under the name of 

 Colobus palliatus Cottoni, and characterized as above. It 

 adds one more link connecting the wholly black and smooth- 

 tailed forms of Guereza with the white-tailed C. cuudatus, 

 which has an enormous white mantle and face-tufts and a 

 white " flag " to the tail like that of a setter ; and is therefore 

 of more interest than the ordinary " subspecies." 



