| Status of Exported Freshwater Fishes | Gunasekara | Loris | 1998 | XXI | 5 | 195 - 198 | General |
| Status of Family Dipterocarpaceae Blume in Sri Lanka (1987) | Wijesinha | Loris | 1988 | XVIII | 2 | 77 - 80 | General |
| Status of Nature Conservation in Ceylon, The | Hoffmann | Loris | 1970 | XII | 1 | 5 - 7 | General |
| Status of the Broad Billed Roller in Sri Lanka, The | Hoffmann | Loris | 1985 | XVII | 1 | 4 | General |
| Status of the Sand Martin (Riparia Riparia) in Sri Lanka | Child | Loris | 1989 | XVIII | 3 | 132 - 133 | General |
| Status, Diversity & Conservation of the Mangrove Forests of Sri Lanka | de Silva | Journal of South Asian Natural History | 1998 | 3 | 1 | 79 - 102 | General |
| Steppig Stones to the Migration of the Indus Script to Easter Island | Paranavitana | Ceylon Today | 1970 | XVIII | 7 & 8 | 27 - 32 | General |
| Sterna Bergii Thalassina, A New Sub-Species of the Large Crested Tern in Sri Lanka | Hoffmann | Loris | 1991 | XIX | 3 | 111 - 112 | General |
| Stilt Walkers of Ceylon | Samarasinghe | Ceylon Observer Pictorial | 1969 | N/A | N/A | N/A | General |
| Stiphodon martenstyni, A New Species of Freshwater goby from Sri Lanka | Watson | Journal of South Asian Natural History | 1998 | 3 | 1 | 69 - 78 | General |
| Stone Age Ceylon | Deraniyagala | Journal of the Royal Asiatic Society | 1954 | III New Series | 2 | 112 - 124 | History |
| Stone Implements from a Balangoda Culture Site in Ceylon - Bellan Bandi Palassa | Deraniyagala | Ancient Ceylon | 1971 | 1 | N/A | 47 - 89 | General |
| Stone Implemets of Ceylon, The | Hartley | Spolia Zeylanica | 1913 | IX | XXXIV | 117 - 123 | General |
| Stone Sarcophagi of the Ancient & Medieval Sinhalese, The | Deraniyagala | Spolia Zeylanica | 1960 | 29 | 1 | 87 - 89 | General |
| Stories in Stone | Ariyadasa | Ceylon Observer Pictorial | 1971 | N/A | N/A | N/A | History |
| Story of a Lion & A Rock Called Sihagiri, The | de Zoysa | Ceylon Observer Pictorial | 1966 | N/A | N/A | N/A | History |
| Story of a River, The - Mahaweli Ganga | Rupesinghe | Ceylon Today | 1965 | 14 | 8 | 5 - 15 | General |
| Story of Ceylon Tea, The | Blackler | Ceylon Today | 1966 | 15 | 1 | 18 - 21 | General |
| Story of Francina Van Reede, The | Jurriaansze | Journal of the D.B.U. | 1942 | XXXII | 1 | 1 - 11 | History |
| Story of Hendala, The - 1 | Bartholomeusz | Journal of the D.B.U. | 1943 | XXXII | 4 | 129 - 133 | General |
|
|
