April 24th; Conspectus Piscium in Expeditione ad Oceanum Pacificum Septentrionalem, C. Ringold et J. Rodgers ducibus, a Gulielmo Stimpson collectorum. Sicydianæ; Monograph of the Genus Labrosomus Sw.; Monograph of the Genus Labrax, of Cuvier; Monograph of the Philypni; Notice of Geological Discoveries, Made by Capt. J. H. Simpson, Topographic ;Catalogue of Birds Collected during a Survey of a Route for a Ship Canal across, the Isthmus of Darien, by Order of the Government of the United States,

"April 24th; Conspectus Piscium in Expeditione ad Oceanum Pacificum Septentrionalem, C. Ringold et J. Rodgers ducibus, a Gulielmo Stimpson collectorum. Sicydianæ; Monograph of the Genus Labrosomus Sw.; Monograph of the Genus Labrax, of Cuvier; Monograph of the Philypni; Notice of Geological Discoveries, Made by Capt. J. H. Simpson, Topographic ;Catalogue of Birds Collected during a Survey of a Route for a Ship Canal across, the Isthmus of Darien, by Order of the Government of the United States, Made by Lieut. N. Michler, of the U.S. Topographical Engineers, with Notes and Descriptions of New Species" is an article from Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 12 . View more articles from Proceedings of the Academy of Natural Sciences of Philadelphia . View this article on JSTOR . View this article's JSTOR metadata . You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-4059360