096 Bulletin American Museum of Natural History [Vol. LIII 
the Lufukwe, an affluent draining part of the Kundelungu Plateau from 
which it descends in a series of picturesque leaps.' 
Lake Moero contains but two islands, both elevated and rocky and 
situated in the southern corner. The largest is that of Kilwa, near the 
western shore; the other, Sokwa, lies near the eastern bank. The lake 
is extremely shallow, the bottom gently sloping from the southern shore 
to the center, at an average depth of 10 m. The deepest depression dis- 
covered thus far reaches only 15 m. and is found close to the eastern 
coast. The main current of the Luapula crosses the lake along the eastern 
shore, the lake itself being at present but little more than a pool-like 
expansion of the stream. The bottom consists of a layer of oozy, gray 
mud, at least 1.5 m. thick. Since the Luvua steadily lowers the level of 
the lake by wearing down the rapids between Pweto and Kiambi, Lake 
Moero will shortly be transformed into a swampy district similar to that 
of the upper Lualaba valley near Lake Kisale. Much of its malacological 
fauna is probably doomed to extinction in the near future. Even at 
present the characteristic, carinate Viviparus mwerue?r sts and its var. 
pagodif rmis are but rarely found alive, although thousands of dead speci- 
mens may be picked up at the shore or dredged from the bottom. The 
water is fresh, but dirty and opaque. Stappers gives 0.40 m. to 0.50 m. 
as the transparency measured by means of a white disk. The day tem- 
perature at the surface varies between 21° C. in the morning and 27° C. 
to 28° C. (rarely 29° C.) inthe afternoon, during the rainy season (October 
to January). Below the surface it rapidly decreases to 24° C.-26° C., 
remaining fairly uniform and varying but little with depth.” 
The fauna of Lake Moero was extensively investigated by the 
late Dr. L. Stappers from September 1911 to January 1912.  Unfor- 
tunately, but few of his results have been published thus far, so that it is 
not possible to give a brief account of the numerical strength of various 
groups as we have done with the other lakes. The fishes are very abun- 
dant in individuals and belong to 46 species, 14 of which are endemic.’ 
‘In the valley of the Kampemba, an affluent of the Lufukwe, about 50 kilometers west of the 
southern end of Lake Moero, there are deposits of a lacustrine limestone, apparently of quite 
recent age, with remains of Physopsis, Lymnzxa, and Planorbis, differing but little from living 
Ethiopian species. See Leriche, M. : 1925. ‘Les fossiles du calcaire lacustre observé récemment 
sur le plateau du Kundelungu (Katanga).’ Rev. Zool. Afric., XIII, pp. 150-155, Pl. v. 
2For physical data concerning Lake Moero, consult: 
ine aeD TS, L. 1912. ‘Expériences de péche faites au lac Moéro.’ Revue Congolaise, II, pp. 397— 
1914. ‘Exploration scientifique du Dr. L. Stappers aux lacs Moéro et Tanganika. I. Recherches 
bathymétriques sur les lacs Moéro et Tanganika.’ Ann. Biol. Lacustre, VII, 1, pp. 83-114, Pls. m-1v, 
map. 
1913. ‘Mission Stappers 1911-1913. Répertoire général des échantillons d’histoire naturelle 
recueillis.’ (Bruxelles), xii+[67] pp. - 
‘See G. A. Boulenger, 1920, Rev. Zool. Afric., VIII, pp. 3-5. ~ 
