The freshwater fishes of British Guiana, including a study of the ecological grouping of species and the relation of the fauna of the plateau to that of the lowlands . Fig. 19. Looking up the Potaro Valley from the brink of the Kaieteur Falls. company has a store and depot surrounded by a few Indian huts. It is situatedon the Potaro at the entrance of the Chenapowu river. My crew of Indians wentout at once to collect poison, the root of a plant called hiari (?Lonchocarpus)under the guidance of the local Indian, Jordan. The Indians of the surroundingregions brought me fishes and we ourselves po
The freshwater fishes of British Guiana, including a study of the ecological grouping of species and the relation of the fauna of the plateau to that of the lowlands . Fig. 19. Looking up the Potaro Valley from the brink of the Kaieteur Falls. company has a store and depot surrounded by a few Indian huts. It is situatedon the Potaro at the entrance of the Chenapowu river. My crew of Indians wentout at once to collect poison, the root of a plant called hiari (?Lonchocarpus)under the guidance of the local Indian, Jordan. The Indians of the surroundingregions brought me fishes and we ourselves poisoned a small creek just below the 52 MEMOIRS OF THE CARNEGIE MUSEUM houses. Unfortunately, it rained heavily, so that the Chenapowu and the Potarorose many feet and made fishing in them not profitable for some time. We wentup the Potaro a distance further and poisoned two creeks just below the Afuataimacataract. In the cataract itself we could do nothing on account of the high later collected in the cataract and sent me two new genera and three new. Fig. 20. Looking down the Canyon of the Potaro River from the brink of the Kaieteur Falls. species, from which it would seem that further collecting would prove profitableat this point. The character of the fauna of the plateau is discussed in detail in another seemed that each creek we examined contained some one dominant form and afew stragglers. The dominant forms varied in different creeks. I started from Holmia on October 27th, fully intending to return with , but I found at Tumatumari that he had gone to England, and I did notreturn. That I could go no further on the Potaro, could not cross over to theIreng, is a lingering regret. We reached Savannah Landing at 12:00 and walkedover to the Kaieteur to take a few more photographs. We also poisoned another creek and collected in a swamp above the started down for Tukeit at 1:30 on the 29th of October. In crossing ShrimpCreek, which se
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