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J I. Report on a Collection made by Messrs. F. V. McConnell and J. J. Quelch at 

 Mount Roraima in British Guiana. {Communicated by Professor E. Ray Lankester, 

 D.C.L., F.M.S., Director of the Natural History Museum.) 



(Plates 4-6.) 



Read 1st February, 1900. 



r OR some years j)ast the British Museum has received many interesting collections 

 made by Mr. P. V. McConnell and Mr. J. J. Quelch during their various expeditions 

 into tlie interior of British Guiana. On the last occasion the explorers succeeded in 

 reaching the snmmit of Mount Roraima, and I have much pleasure in forwarding the 

 accomjjanying descrijjtions of the new species obtained during the expedition, all of 

 vi'hich have been worked out by members of the staff of the Zoological Department 

 of the British Museum, excepting the Crustacea, which have been dealt with by 

 Dr. de Man. 



Mr. McConnell has kindly sent me the following note : — " The specimens were 

 obtained by Mi\ J. J. Quelch and myself on our second exjiedition to Roraima in August, 

 September, and October, 1S98. The route taken on tliis occa.sion Avas by the Mazaruni 

 and Curubung rivers to the Palls of Macrobah, a boat-journey of twenty days, and 

 thence by land to a point on the U})pei' Mazaruni where that river flows at a height of 

 1300 feet. Small bark-canoes were here obtained, and after three days' journey ujj the 

 Cako and Aruparu we arrived at the commencement of the ti'ail to Roraima. With the 

 exception of the last twenty miles, the whole journey, which occupied forty days, lay 

 through thick forest. 



" Mount Roraima (8700 feet) is formed by a sloping base, surmounted by a rectangular 

 mass, fifty-four square miles in area, with perpendicular walls 2000 feet in height. On 

 the south-west, part of the wall has slipped, and lies diagonally across the face of the 

 upper part of the mountain. By following the ledge so formed the summit can be 

 reached without serious difiiculty." — E. Ray Lankester. 



SECOND SERIES. — ZOOLOGY, VOL. VUI. 



