1899.] ON SCOB,PIO>"S ETC. FKOM TROPICAL WEST AEEICA. ?33 



could be arrived at. Now at the time this opinion was given my 

 knowledge of the Blr.e-buck and its habits was but slight ; but 

 during my residem-e in the Cape Colony 1 have studied them very 

 carefully, and I am now able to ad\ance further I'easons why I am 

 convinced that this Kwawa Antelope was not C. monticola. At first 

 I could only point to the entirely different coloration, the Kwawa 

 specimen being a warm yellowish-red, with pure vjhite iinderparts, 

 and a wash of the mouse-grey colour, peculiar to C. monticola, on 

 the frontals and nape of the neck ; but it is now evident to me that 

 the habits of the two are quite dissimilar, the Kwawa Antelope 

 being very restricted in its range, more partial to open clearings, 

 less ?hy, and a less pronounced browser, while its movements are 

 springy and more resemble those of Nesotragus livingstonianiis, for 

 \^hich Antelope I and my native followers at first mistook it. 

 However, I hope soon to secure other specimens, and until then it 

 is idle to speculate upon the subject. 



2. On the Scorpions, Pedipalps, and Spiders from Tropical 

 West Africa represented in the Collection of the British 

 Museum. By R. I. Pocock. 



[Eeceived May 24, 1899.] 

 (Plates LV.-LVIII.) 



With the exception of the Attidse and of some of the more 

 obscure species of other families, which 1 have not attempted to 

 determine, this paper contains a record of the Arachnida belonging 

 to the Orders Scorpiones, Pedipalpi, and Aranese, now contained in 

 the British Museum, which have been collected at various times 

 in West Africa between Senegambia in the north and the Congo in 

 the south. Senegambia has been fixed as the northern limit, 

 because it is at that point that the western Ethiopian fauna blends 

 with the western Mediterranean fauna. From the countries lying 

 to the south of the Congo we have very little material ; hence this 

 river has been regarded as the southern limit of the area of which 

 the fauna is discussed in the following pages. 



By far the richest collection, both as regards numbers of speci- 

 mens and species, that we have received from this area is the one 

 that has been sent in instalments during the past twelve months 

 by Mr. G. L. Bates from the Benito Eiver in French Congo. 

 This collector, whose name has already been frequently mentioned 

 in the pages of the 'Proceedings' in connection with various rare 

 mammals that he has procured, has been wonderfully successful in 

 his search after Spiders, having sent home representatives of many 

 new species, and added to the National Collection several othei'S 

 which, although previously known, had never found their way into 

 our cabinets. 



