ON AN INVESTIGATION OF THE BATOKA GORGE. 801 
Fresh-water Shells from the Middle Zambest Basin. 
Species. Localities. 
Melania tuberculata (Muller). . Matetsi River, near mouth. 
+ sp. allied to Metoria, Dohrn. ~ . 
a sp. ; : Zambesi River, above Victoria Falls. 
Lanistes, sp. perbaps a var. of Z. ovum, | Dry Vicy between head-waters of 
Peters f Matetsi and Deka Livers. 
Vivipara capillata, Frauenfeld . . Viley in Deka Valley, near Bumbusi; 
and Bwani River. 
Physopsis africana, Krauss 5 . Vley in Deka Valley, near Bumbusi, 
Limnea, sp. B k 2 ec ) rf 
Planorbis Pfeifferi, Krauss i S + 3 
Unio zambesiensis, Preston . 3 . Yambesi River, at crest of Victoria 
Falls. 
De = = . Matetsi River; Bwani River; Deka 
River. 
Spatha Wahlbergi, Krauss . - . Zambesi River, at mouth of Matetsi 
River ; Deka River. 
Corbicula astartina, Martens. . Deka River; Matetsi River, near 
mouth. 
“ radiata, Parreyss .- . Deka River; Bwani River. 
In conclusion it is my pleasant duty gratefully to acknowledge the 
great assistance rendered during the investigation by the officers of the 
British South Africa Company in Rhodesia and also in London ; by the 
engineers of the Wankie Coal Mine and of the Rhodesia railways ; and 
by many other friends in Rhodesia. To Mr. F. W. Sykes I am peculiarly 
indebted for removing initial difficulties, and for his unstinted co-opera- 
tion and guidance in the most difficult part of the work ; to Mr. H. F. 
Greer, for the invaluable assistance which enabled me to carry out the 
traverses south of the Zambesi; and to Mr. J. M. Kearney, for the 
facilities afforded me for examining the country around Wankie. To 
Mr. A. C. Seward, F.R.S., and Mr. E. A. Smith I am indebted, as already 
mentioned, for the determination of specimens. 
Report on Ruins in Rhodesia. By Davip RanpaLu-Maclver. 
(Abstract of Lecture delivered at Bulawayo.) 
Tux history of the East Coast is absolutely dark until the tenth century, 
when, as is known from the chronicle of Kilwa, the earliest of the 
Mohammedan settlements, Magadoxo was founded. To judge from the 
scanty documentary evidence available, the Zambesi was quite unknown 
to the civilised world before the era of Mohammed. Sofala itself was 
colonised from Magadoxo, and there is no justification, in the absence up 
to the present of archzxological finds, for ascribing its foundation to any 
more remote date. 
From Sofala, or rather from Beira, which has supplanted it within the 
last generation, is the natural entrance to the interior, where the ruins to 
be described are situated. The lecturer had explored seven sites, viz., 
the Rhodes Farm at Inyanga, a place sixteen miles farther north which 
he had named the Niekerk Ruins, Umtali, Nanatali, Dhlo Dhlo, Khami, 
and Zimbabwe. Taking these in order he described the results obtained 
from them, which may be briefly summarised as follows. 
The remains at Inyanga consist of pit-dwellings, hillforts, and 
