| Macrostomum sinyaense Young, 1976 | Mar 11, 1971 | | | total of 14 specimens collected on three separate dates. Small pond near Karen, half way between Ngong Road and Nairobi National Park link road. |
| Macrostomum sinyaense Young, 1976 | Mar 1, 1972 | | | total of 14 specimens collected on three separate dates. Small pond near Karen, half way between Ngong Road and Nairobi National Park link road. |
| Macrostomum sinyaense Young, 1976 | Aug 1, 1972 | | | total of 14 specimens collected on three separate dates. Small pond near Karen, half way between Ngong Road and Nairobi National Park link road. |
| Mesostoma ehrenbergii (Focke, 1836) | Aug 1, 1972 | | | Pond near Karen, near Nairobi; half-way between Ngong road and Nairobi National Park link road; approximately 50 x 30 m; mud with much vegetation, including Typha and water-lilies. 11 specimens. |
| Mesostoma ehrenbergii (Focke, 1836) | Nov 10, 1971 | | | Pond near Karen, about 0.5 km from main road; mud with much aquatic vegetation including Typha and Papyrus. 1 specimen. |
| Mesostoma ehrenbergii (Focke, 1836) | Apr 6, 1972 | | | Pond near Karen, about 0.5 km from main road; mud with much aquatic vegetation including Typha and Papyrus. 12 specimens. |
| Mesostoma ehrenbergii (Focke, 1836) | May 29, 1972 | | | Pond near Karen, about 0.5 km from main road; mud with much aquatic vegetation including Typha and Papyrus. 1 specimen. |
| Bothromesostoma personatum (Schmidt, 1848) | May 29, 1972 | | | Pond near Karen, about 0.5 km from main road; mud with much aquatic vegetation including Typha and Papyrus. 1 specimen. |
| Bothromesostoma personatum (Schmidt, 1848) | Aug 1, 1972 | | | Pond near Karen, about 0.5 km from main road; mud with much aquatic vegetation including Typha and Papyrus. 8 specimen. |
| Bothromesostoma personatum (Schmidt, 1848) | Nov 3, 1971 | | | Pond near Karen, near Nairobi; half-way between Ngong road and Nairobi National Park link road; approximately 50 x 30 m; mud with much vegetation, including Typha and water-lilies. 1 specimen. |
| Mesostoma lingua (Abildgaard, 1789) | Nov 3, 1971 | | | Pond near Karen, near Nairobi. 3 specimens. |
| Mesostoma lingua (Abildgaard, 1789) | Aug 1, 1972 | | | Pond near Karen, near Nairobi. 12 specimens. |
| Mesostoma lingua (Abildgaard, 1789) | 1971 - 1972 | | | Pond near Karen, near Nairobi. 143 specimens. |
| Gyratrix hermaphroditus Ehrenberg, 1831 | Mar 11, 1971 | | | Pond near Karen, Nairobi. 1 specimen. |
| Gyratrix hermaphroditus Ehrenberg, 1831 | Mar 1, 1971 | | | Pond near Karen, Nairobi. 3 specimen. |
| Stenostomum arevaloi Gieysztor, 1931 | Mar 1972 | | | two specimens from the littoral zone (Typha) of a dam at Karen near Nairobi. |