ZOOLOGISCHE MEDEDELINGEN UITGEGEVEN D O O R H E T RIJKSMUSEUM VAN NATUURLIJKE HISTORIE TE LEIDEN (MINISTERIE VAN CULTUUR, RECREATIE EN MAATSCHAPPELIJK WERK) Deel 44 no. 5 29 december 1969 NOTES ON THE H E R P E T O F A U N A O F SURINAM II.— ON THE OCCURRENCE OF ALLOPHRYNE RUTHVENI GAIGE (AMPHIBIA, SALIENTIA, HYLIDAE) IN SURINAM by M. S. HOOGMOED Rijksmuseum van Natuurlijke Historie, Leiden With one text-figure and three plates. INTRODUCTION In a recent paper, Lynch & Freeman (1966) discussed the systematic po- sition of a small hylid frog, Allophryne ruthveni, described in 1926 by Gaige from British Guiana. They tentatively placed it in the family Hylidae, because it shows a better agreement with that family than with any other. The mate- rial available to them consisted of six specimens, all from "the foothills of the northeastern face of the Guiana Massif" in Guyana (formerly British Guiana). Since a few years the present author has been engaged in an in- vestigation of the herpetofauna of Surinam (Dutch Guiana). During these studies, a fair number of A . ruthveni specimens was examined. In addition to the locality, of most of these the collecting date and some scanty notes on the habitat are available. During a collecting trip in Surinam from April- November 1968, financed by grant W 956-2 from W O T R O (Netherlands Foundation for the Advancement of Tropical Research), I was able to collect A. ruthveni in several localities and to assemble some more extensive infor- mation on the habitat. It seems useful to present measurements of the Suri- nam material in order to afford a better understanding of the variation in this little known species. Figures of Surinam representatives of A . ruthveni are given on plates 1 (figs, 1, 2) and 3 (fig. 3). DISTRIBUTION Apart from the Surinam localities, it is possible to add one from Brazil of which Lynch & Freeman (1966) seem to have been unaware. In 1958 Boker- mann described a new species, Sphenohyla seabrai, from the Serra do Navio,