340 PROCEEDINGS OF THE ACADEMY OF [1881. 



1855. Batoor. Christyi Shum. (not Hall, 1863 = Periechocr. Ohrintyi.) Figurd in 

 Christy's letters on Geol., PI. 1, figs. 1, 2; Shumard, Aotinocr. Christyi, 

 Geol. Rep. Missouri by Swallow, pt. ii, p. 191, PI. A, fig. 3 ; Meek and Worth., 

 1873, Batoor. Christyi, Geol. Rep. 111., v, p. 367, PI. v, figs. 4 a, b ; Wachsm. 

 and Spr., IS78, Proc. Acad. Nat. Sci. Phila., p. 231. Upper Burlington 

 limest. Burlington, Iowa. 



1860. Batoor. clypeatns Hall. (Aotinocr. clypeatus) Supp. Geol. Rep. Iowa, p. 



12, PI. .3, fig. 12; Meek and Worth., 1867, Batoor. olypeaius, Geol. Rep. 



111., ii, p. 150. Lower Burlington limest. Burlington, Iowa 

 Syii. Aotinocr. inornatus Hall, 1860. Supp. Geol. Rep. Iowa, p. 24; Meek 



and Worth., Batoor. inornatus, Geol. Rep. 111., v, p. 367. 

 Syn Aotinocr. papillatus Hall, 1860. Supp. Geol. Rep. Iowa, p. 29, PI. 3, 



figs. 10, 11 ; Meek and Worth., Batocr. papillatus, Geol. Rep. 111., v, p. 367. 

 1858. Batocr. disooideus Hall. (Aotinocr. discoideus) Geol. Rep. Iowa, i, pt. ii, 



p. 594; Meek and Worth., 1867, Aotinocr. (Batocr.) discoideus, Geol. Rep. 



111., ii, p. 150, and 1873, BatOCr. discoideus, Ibid., v, p. 367. Lower Bur- 

 lington liraest. Burlington, Iowa. 

 Syn. Aotinocr. formosus Hall, 1860. Supp. Geol. Rep. Iowa, p. 30 ; Meek 



and Worth., 1873, Batocr. formosus, Geol. Rep. 111., v, p. 367. 

 Syn. Actinoor. subaequalis McChesney, 1860. Desc. Pal. Foss , p. 17; also 



1867, Chicago Acad. Nat. Sci., p. 13, PI 5, fig. 7; Meek and Worth., BatOCr. 



subaequalis, Geol. Rep. 111., v, p. 367. 



1861. Batocr. dodecadactylus Meek and Worth, (Actinocr. dodecadaotylus) Proc. 



Acad. Nat. Sci. Phila., p. 131, and 1866, Batoor. dodecadactylus, Geol. 

 Rep. 111., ii, p. 205, PI. 15, figs. 3 a, b, c, and Ibid., v, p. 368. Upper Bur- 

 lington limest. Burlington, Iowa. 

 This species forms an exception to the rule in having apparently only twelve 

 arms. It may possibly be a young B. rotundus, and that some of the arms 

 branch off in the free state. 



*1860. Batocr. euconus Meek and Worth. (Aotinocr. — AUoprosallocr. — euconus) 

 Proc. Acad. Nat. Sci. Phila., p. 164, changed in 1873 to Batocrinus (AUo- 

 prosaUoorinus euconus), Geol. Rep. HI., v, p. 368. Warsaw limest. Spur- 

 geon Hills, Ind. 



1860. Batocr. Hageri McChesney. (Aotinocr. Hageri) New Pal. Foss , p. 28; also 

 1867, Chicago Acad. Nat. Sci., p. 21, PI. 4, fig. 1 ; Meek and Worth, 1873, 

 Batocr. Hageri, Geol. Rep. 111., v, p. 367. Upper Burlington limest. Bur- 

 lington, Iowa. 



1804. Batocr. ioosidactylus Casseday. (Type of the genus.) Deutsche Gtol. 

 Gesellsehaft, vi, p. 238; Meek and Worth., 1867, Aotinocr. (Batocr.) ioosi- 

 dactylus, Geol. Rep, 111., v, 367. Warsaw limest. Spurgcon Hills, Ind. 



*1869. Batoor. Indiansenais Lyon and Cass. (Actinocr, Indianaensis) Am. Journ. 

 Sci. and Arts, vol. 29, p. 75; Meek and Worth , 1873, Actinocr, Ind^an- 

 aensis, Geol. Rfp. 111., v, p. 341. Keokuk limest. Crawfordsville, Ind. 



1854. Batocr. irregularis Casseday. Deutsche Geol. Gesellsehaft, vi, p. 238; Meek 

 and Worthen, 1867, Geol. Rep. III., ii, p. 150; also 1873. Ibid., v, p. 367. 

 Warsaw limest. Spurgeon Hills, Ind. 



1860. Batocr. lagunculus Halt. (Aotinocr. lagunculu?) Supp. Geol. Rep. Iowa, 

 J). 41 ; Meek and Worth., Batoor. lagunculus, Geol. Rep. Ill , v, 367. Keo- 

 kuk limest. Iowa and Illinois. 



