| Macrostomum coxi Young, 1976 | Mar 24, 1972 |  |  | 1 specimen. | 
| Macrostomum nairobiense Young, 1976 | Mar 24, 1972 |  |  | 3 specimens. | 
| Macrostomum sinyaense Young, 1976 | Oct 26, 1971 |  |  | 69 specimens, collected over 12 dates 1971-1972. | 
| Macrostomum sinyaense Young, 1976 | Nov 23, 1971 |  |  | 69 specimens, collected over 12 dates 1971-1972. | 
| Macrostomum sinyaense Young, 1976 | Dec 27, 1971 |  |  | 69 specimens, collected over 12 dates 1971-1972. | 
| Macrostomum sinyaense Young, 1976 | Jan 31, 1972 |  |  | 69 specimens, collected over 12 dates 1971-1972. | 
| Macrostomum sinyaense Young, 1976 | Feb 29, 1972 |  |  | 69 specimens, collected over 12 dates 1971-1972. | 
| Macrostomum sinyaense Young, 1976 | Mar 24, 1972 |  |  | 69 specimens, collected over 12 dates 1971-1972. | 
| Macrostomum sinyaense Young, 1976 | Apr 24, 1972 |  |  | 69 specimens, collected over 12 dates 1971-1972. | 
| Macrostomum sinyaense Young, 1976 | Jun 11, 1972 |  |  | 69 specimens, collected over 12 dates 1971-1972. | 
| Macrostomum sinyaense Young, 1976 | Sep 1, 1972 |  |  | 69 specimens, collected over 12 dates 1971-1972. | 
| Macrostomum tuba Graff, 1882 | Oct 26, 1971 |  |  | 24 specimens, collected 1971-1972 dates. | 
| Macrostomum tuba Graff, 1882 | Nov 23, 1971 |  |  | 24 specimens, collected 1971-1972 dates. | 
| Macrostomum tuba Graff, 1882 | Dec 27, 1971 |  |  | 24 specimens, collected 1971-1972 dates. | 
| Macrostomum tuba Graff, 1882 | Jan 31, 1972 |  |  | 24 specimens, collected 1971-1972 dates. | 
| Macrostomum tuba Graff, 1882 | Feb 29, 1972 |  |  | 24 specimens, collected 1971-1972 dates. | 
| Macrostomum tuba Graff, 1882 | Mar 24, 1972 |  |  | 24 specimens, collected 1971-1972 dates. | 
| Macrostomum tuba Graff, 1882 | Apr 24, 1972 |  |  | 24 specimens, collected 1971-1972 dates. | 
| Gieysztoria joannae Young, 1977 | Nov 23, 1971 |  |  | Wellcome Dame, Kabete, Nairobi.  Animals collected from Typha and Polygonum in littoral zone.  1 specimen. | 
| Gieysztoria joannae Young, 1977 | Jan 31, 1972 |  |  | Wellcome Dame, Kabete, Nairobi.  Animals collected from Typha and Polygonum in littoral zone.  1 specimen. | 
| Gieysztoria joannae Young, 1977 | Apr 24, 1972 |  |  | Wellcome Dame, Kabete, Nairobi.  Animals collected from Typha and Polygonum in littoral zone.  1 specimen. | 
| Gieysztoria joannae Young, 1977 | Aug 7, 1972 |  |  | Wellcome Dame, Kabete, Nairobi.  Animals collected from Typha and Polygonum in littoral zone.  1 specimen. | 
| Myostenostomum tauricum (Nasonov, 1924) | Feb 29, 1972 |  |  | 1 specimen. | 
| Rhynchomesostoma rostratum (Müller, 1774) | Oct 26, 1971 |  |  | 1 specimen. | 
| Rhynchomesostoma rostratum (Müller, 1774) | Dec 27, 1971 |  |  | 16 specimens. | 
| Rhynchomesostoma rostratum (Müller, 1774) | Jan 31, 1972 |  |  | 9 specimens. | 
| Rhynchomesostoma rostratum (Müller, 1774) | Feb 29, 1972 |  |  | 4 specimens. | 
| Rhynchomesostoma rostratum (Müller, 1774) | Mar 24, 1972 |  |  | 1 specimen. | 
| Rhynchomesostoma rostratum (Müller, 1774) | May 29, 1972 |  |  | 1 specimen. | 
| Rhynchomesostoma rostratum (Müller, 1774) | Jun 22, 1972 |  |  | 3 specimens. | 
| Rhynchomesostoma rostratum (Müller, 1774) | Jul 20, 1972 |  |  | 7 specimens. | 
| Rhynchomesostoma rostratum (Müller, 1774) | Aug 7, 1972 |  |  | 4 specimens. | 
| Rhynchomesostoma rostratum (Müller, 1774) | Sep 1, 1972 |  |  | 4 specimens. | 
| Gyratrix hermaphroditus Ehrenberg, 1831 | 1971-1972 |  |  | 14 specimens. | 
| Prorhynchus stagnalis Schultze, 1851 | Jul 20, 1972 |  |  | Wellcome Dam, Kabete, Nairobi.  1 specimen. | 
| Stenostomum arevaloi Gieysztor, 1931 | Feb 1972 |  |  | four specimens from the littoral zone (Typha and Polygonum) of the Wellcome Dam at Kabete. | 
| Stenostomum glandulosum Kepner & Carter, 1931 | Aug 1972 |  |  | littoral zone (Typha and Polygonum) of the Wellcome Dam at Kabete, Nairobi. | 
| Stenostomum pseudoacetabulum Nuttycombe & Waters, 1935 | 1971-1972 |  |  | the littoral zone (Typha and Polygonum) of the Wellcome Dam. |