1881.] NATURAL SCIENCES OF PHILADELPHIA. 401 



A. securus Hall, syn. of Actinocr. sexarmatus. 



A. Sillimani Meek and Worth., syn. of Actinocr. seitulns. 



A. similis Hall, see Batocrinus similis. 



A. simplex Phillips, see Carpocrinus simjjlex. 



A. sinuosus Hall, see Batocr. sinuosus. 



A. speciosus Meek and Worth., syn. of Strolocr. regalis. 



A. ipinobrachiatus Hall, see Amphoracr. spinobrachiatus, 



A. spinulosus Hall, see Dorycr. spinulosus. 



A. steropes Hall, see Batocr. sterope-i. 



A. striatus MUnster. Not known to us. 



A. suhaculeatus Hall, see Dorycr. subaculeatus. 



A. subxqualis McChesney, syn. of Batocr. discoideus. 



A. subturbi7iatus Meek and Worth., syn. of Dorycr. parvus. 



A. subumbrosus Hall, syn. of Teleiocr. liratus, 



A. subventricosus McChesney, syn. of Physetocr. ventricosus. 



A. superlatus Hall, syn. of Megistocr. brevicornis. 



A. symmetricus Hall, syn. of Dorycr. parvus. 



A. tenuidiscus Hall, see Periechocr. tenuidiscus. 



A. tenuiradiatus Hall, 1861, see Teleiocr. ienuiradiatus. 



A. tenuiradiatus Hall, 1847, Palteocrystes. 



A. tenmstriatus Phillips. Detached columns. 



A. tesseraius Goldf. Detached plates and columns. 



A. tesseracontadactyJus Goldf., see Abacocr. tesseracontadactylus. 



A. tesseracontadactylus Hisinger, syn. of Carpocr. simplex. 



A. themis Hall, syn. of Actinocr. proboscidialis. 



A. thetis Hall, syn. of Actinocr. sexarmatus. 



A. thoas Hall, syn. of Actinocr. reiiculatus. 



A. tholus Hall, syn. of Actinocr. glans. 



A. tricornis Hall, syn. of Dorycr. miicornis. 



A. trinodus Hall syn. of Dorycr. parvus. 



A. turbinatus Hall, see Batocr. turbinatus. 



A. var. elegans Hall, syn. of Batocr. turbinatus. 



A. umbrosus Hall, see Teleiocr. umbrosus. 



A. unicornis Owen and Shum., see Dorycr. unicornis. 



A. unispinus Hall, see Dorycr. unispinus. 



A. urna Troost. Catalogue name. 



A. urnxformis McChesney, syn. of Eretmocr. KonincH. 



A. validus Meek and Worth., syn. of Steganocr. concinnus. 



A. ventricosus Hall, see Physetocr. ventricosus. 



A. cancellatus Hall, syn. of Physetocr. ventricosus. 



A. internodius Hall, syn. of Physetocr. ventricosus. 



A. Verneuili Troost, see 3Ielocr, Verneuili. 



A. Vernenilianus Shum., see Eretmocr. Verneuilianus. 



A. viminalis Hall, see Amphoracr. viminalis. 



A. Wachsmuthi White (1862), syn. of Actinocr. sciiulus. 



A. TFacA^mi^^Ai White (1880), see Batocr. Wachsmuthi. 



A. Whitei Hall, see Periechocr. Whitei. 



37 



