ART. XLIX.--Paleozoic Formations in Trans-Pecos Texas;: CAMBRIAN. Bliss Sandstone. Van Horn Sandstone. ORDOVICIAN. El Paso Limestone. Montoya Limestone. Fossils from the Galena beds. Fossils from the Richmond beds. SILURIAN. Fusselman Limestone. CARBONIFEROUS. Hueco Limestone. List of fossils from the Hueco limestone. GUADALUPIAN. Delaware Mountain Formation. List of fossils from the Delaware Mountain formation. Capitan Limestone. List of fossils from the Capitan limestone. Resume.