. College collection of palaeontology. 130 MOLLUSCA. No. 383. [698, Cast]. Spirifer striatus, Martin. This large specimen of S. striata (tlie type of the genus), was found in the Carboniferous Limestone of Enniskillen, Ireland. No. 383. Athyris ambigua, Sow. The hinge-line of this genus is curved; no area; foramen round; deltidium obsolete; 100 species fossil; from Silurian to Jurassic. Carboniferous Lime- stone, near Edinburgh, Scotland. No. 384. Athyris concentrica, Buck. Devonian, Romersheim, Gerolstein, Prussia. No. 385. Athyris spiriferoides, Eaton. Hamilton Group, Moscow, N. Y. No. 386.
. College collection of palaeontology. 130 MOLLUSCA. No. 383. [698, Cast]. Spirifer striatus, Martin. This large specimen of S. striata (tlie type of the genus), was found in the Carboniferous Limestone of Enniskillen, Ireland. No. 383. Athyris ambigua, Sow. The hinge-line of this genus is curved; no area; foramen round; deltidium obsolete; 100 species fossil; from Silurian to Jurassic. Carboniferous Lime- stone, near Edinburgh, Scotland. No. 384. Athyris concentrica, Buck. Devonian, Romersheim, Gerolstein, Prussia. No. 385. Athyris spiriferoides, Eaton. Hamilton Group, Moscow, N. Y. No. 386. Athyris subtilita, Hall. Carboniferous, Ruby Valley, Nevada. No. 387. Athyris vittata, Hall. Corniferous, Clarke Co., Indiana. No. 388. Meristella barrisi, Hall. Corniferous, LeRoy, N. Y. No. 389. Retzia evax, Hall. Niagara Group, Waldron, Ind. No. 390. Uncites gryphus, Defr. In the Devonian of Europe. Devonian, Paflfrath, Germany. FAMILY STROPHOMENIDiE. Shell transversely oblong; depressed; hinge-line wide and straight; beak small; valves plano-convex or concavo-convex; area notched. No. 391. Strophomena alternata, [Con. Shell of this genus semicircular, widest at the hinge-line; concavo-convex; area double; ventral valve notched; 129 species known, all Palaeozoic. Cincinnati Group, Covington, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ward's Natural Science Establishment, inc. Rochester
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