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| Potaro-Siparuni kaiteur (6) worcesteruk (54) | Upper Takutu-Upper Essequibo Labba and friends (2) worcesteruk (54) | Potaro-Siparuni unidentified frog (2) worcesteruk (54) |
| Potaro-Siparuni Kaieteur Falls, 1st Guyana Posting (42) Jamesp | ||
|   |
| Potaro-Siparuni kaiteur (6) worcesteruk (54) | Upper Takutu-Upper Essequibo Labba and friends (2) worcesteruk (54) | Potaro-Siparuni unidentified frog (2) worcesteruk (54) |
| Potaro-Siparuni Kaieteur Falls, 1st Guyana Posting (42) Jamesp | ||
|   |