BKACFIIOPODA. 



123 



costatoides, Swallow, 1858, Trans. St. 



Louis Acad. Sd., Up. Coal Meas. [Sig. 



reseinbling P. codatm.'] 

 costatiis, Sowerby, 1827, Min. Conch. 



vol. 0, Coal Meas. [Sig. ribbed.] It 



is doubtful whether this species has 



been identified in America.] 

 curtirostratus, VVnnchell, 1805, Proc. 



Acad. Nat. Sci., Chemung Gr. [Sig. 



short-beaked.] 

 delawari, Marcou, 1*858, Geol. N. Amer., 



Low. Carb. [Ety. proper name.] 

 depremis, Sowerby, 1825, see Strophomena 



depressa. 

 depressus. Swallow, 1863, Trans. St. 



Louis Acad. Sci., Low. Carb. [Sig. 



depressed.] 

 dissimilis. Hall, 1858, Geo. of Iowa, Ham. 



Gr. [Sig. unlike, various.] 

 dolorosus, Winchell, 1865, Proc. Acad. 



Nat. Sci., Chemung Gr. [Sig. 



wretched.] 

 damosiis, see Productella dumosa. 

 duplicostatus, Winchell, 1865, Proc. Acad. 



Nat. Sci., Marshall Gr. [Sig. double- 

 plicated.] 

 ekgans, Norwood & Pratten, 1854. This 



name was preoccupied, and the fossil 



is now named F. cestriensis. 

 exanthematus, see Productella exanthem- 

 ata, 

 fasciculatus, McChesney, 1860, New Pal. 



Foss., Coal Meas. fSig. bundled.] 

 fentonensis. Swallow, 1863, Trans. St. 



Louis Acad. Sci., Low. Carb. [Ety. 



proper name.] 

 flemingi, Sowerby, 1814, Min. Conch., 



vol. 1, Low. Carb. [Ety. proper 



name.] 

 flemingi var. burlingtonensis. Hall, 1858, 



Geo. Rep. Iowa, Burlington Gr. [Ety. 



proper name.] 

 gracilis, Winchell, 1865, Proc. Acad. Nat. 



Sci., Cuyahoga shale. [Sig. slender.] 

 gradatus. Swallow, 1863, Trans. St. Louis 



Acad. Sci., Keokuk Gr. [Sig. made 



with steps.] 

 hildrethianus, Norwood & Pratten, 1854, 



Jour. Acad. Nat. Sci., 2nd ser., vol. 3, 



Coal Meas. [Ety. proper name.] 

 hirmtus, see Productella hirsuta. 

 horridus, Geinitz, 1866. This name was 



preoccupied; moreover Prof. Meek 



regarded the fossil as P. longispinus. 

 indianensis, Hall, 1858, Trans. Alb. Inst., 



vol. 4, Warsaw Gr. [Ety. proper 



name.] 

 injiatv^, syn. for P. semireticulatus. 

 ivesi, Newberry, 1861, Ives' Col. Ex. 



Exped., Mid. Carb. [Ety. proper 



name.] 

 lasallensis, Worthen, 1873, Geo. Sur. 111., 



vol. 5, dp. Coal Meas. [Ety. proper 



name.] 

 Isevicostus, White, 1860, Bost. Jour. Nat. 



Hist., Kinderhook Gr. [Sig. smooth- 

 ribbed.] 



latissunus, Sowerby, 1822, Min. Conch., 



Carb. [Sig. very wide.] 

 longispinus, Sowerby, 1814, Min. Conch., 



vol. 1, Coal Meas. [Sig. long-spined.] 

 lobatuH, as identified by d'Archiac dk Ver- 



neuil. Not American, 

 magnicostatus, Swallow, 1860, Trans. St. 



Louis Acad. Sci., Coal Meas. [Sig. 



large-ribbed.] 

 magnus. Meek & Worthen, 1861, Proc. 



Acad. Nat. Sci. Phil., Keokuk Gr. 



[Sig. large.] 

 marginicinctus, Prout, 1857, Trans. St. 



Louis Acad. Sci., St. liOuis Gr. [Sig. 



encircled with a depression near the 



margin.] 

 mesialis. Hall, 185 8, Geo. Rep. Iowa, 



Keokuk (xr. [Sig. middle-parted.] 

 mexicanus, Shumard, 1858, Trans. St. 



Louis Acad. Sci., Permian Gr. [Ety. 



proper name.] 

 morbiliianus, Winchell, 1865, Proc. Acad. 



Nat. Sci., Burlington Gr. [Sig. measly, 



spotted.] 

 multistriatus. Meek, 1860, Proc. Acad. 



Nat. Sci., Coal Meas. [Sig. many- 

 lined.] 

 muricatus, Norwood & Pratten, 1854, 



Jour. Acad. Nat. Sci. Phil., Coal Meas. 



Prof. Meek regarded this as a syn. for 



F. longispinus. [Sig. full of shar]) 



points.] 

 navicella, see Productella navicella. 

 nebrascensis, Owen, 1852, Geo. Rep. Wis., 



Iowa & Minn., Coal Meas. [Ety. 



proper name.] 

 nodosus, Newberry, 1861, Ives' Col. Ex. 



Exped. Carb. [Sig. knotty.] 

 norwoodi. Swallow, 1858, Trans. St. Loui.s 



Acad. Sci., Permian Gr. [Ety. proper 



name.] 

 occidentalis, Newberry, 1861, Ives' Col. 



Ex. Exped., Up. Carb. [Sig. western.] 

 orbignyanm, Geinitz, 1866. This name 



was preoccupied by Sowerby in 1822. 

 ovatus. Hall, 1858, Geo. Rep. Iowa, St. 



Louis Gr. [Sig. egg-shaped.] 

 parvulus, Winchell, 1863, Proc. Acad. 



Nat. Sci., Chemung Gr. [Sig. very 



small.] 

 parvus. Meek & Worthen, 1860, Proc. 



Acad. Nat. Sci. Phil., Chester Gr. 



[Sig. small.] 

 pertenuis. Meek, 1872, Pal. E. Neb., Coal 



Meas. [Sig. very thin.] 

 phillipsi, Norwood & Pratten, 1854, Jour. 



Acad. Nat. Sci., vol. 3, 2nd series, 



Low. Carb. [Ety. proper name.] 

 piMformis, syn. for Productus cora. 

 pileolus, Shumard, 1858, Trans. St. 



Louis Acad. Sci., Permian Gr. [Sig. 



a little bonnet or cap.] 

 popii, Shumard, 1858, Trans. St. Louis 



Acad. Sci., Permian Gr. [Ety. proper 



name.] 

 portlockianus, Norwood & Pratten, 1854, 



Jour. Acad. Nat. Sci., 2nd series, vol. 



3, Coal Meas. [Ety. proper name.] 



