78 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



Page. 



L. cralcri/ormis, Hall, 1866, pi. iii, flgs. 1 a-t 51-52 



Hemicyslilex, JlaU ' 52 



n.xtcUatus, Hall, 18CG, pi. iii, flg8. 8 a,b 52-54 



//. (Cystnater) (jramitalus, Hall, 1872, pi. iii, figs. Oa,b 54 



Agclacrinites, Vauuxom, 1842 55 



A. (Lepidodisnis) cincinnatiensis, Roemer, 1851, pi. iii, figs. 6 a,b 55-56 



A. pileus. Hall, 1860, pi. iii, flg. 5 56 57 



A. vorticellata, Hall, 1866, pi. iii, figs. 1 a,b 57-58 



Afiteroidea. 



Palaeaster, Hall 58 



P. ? dyeri, Meek, 1872, pi. iv, figs. 2 a-/ 58-60 



P. granulosus. Hall ? 186G, pi. iv, flgs. 3 a-c 60-61 



r:> jamfsii, Dana, 1863, pi. iv, fig. 4 62-64 



P. mcnmptus, Meek, 1872, pi. iv, figs. 5 a,b 64-65 



P. shaeffcri, Hall, 1868, pl.iv, flg. 1 66 



.Stoiasfer Billings, 1858 66 



S. grandis, Meek, 1872, pi. iii bis, fig. 7 a-c 66-67 



02)hmroidea. 



Protaster'!, Forbes, 1849 68 



P. granuliferus, Meek, 1872, pi. iii bis, flgs. 8 a, b 68-69 



Ilolhigca. 

 Polyzoa. 



Ptilodictya, Lonsdale, 1839 69 



P. (Stictopora) ghafferi, Meek, 1872, pi. v, figs. 1 a-c 69-70 



Prachiopoda. 



Leptaena, Ualm.-w, 1828 70 



L. sericea, Sowerby ? 1839, j)l. v, figs. 3 a-h 70-72 



Stroj)homena, Itafinesque, 1827 73-75 



S. rhomboidalix, Wilckens .sp., 1769, pi. v, figs. 6 a-c 75-77 



Subgenus Ilemipronitcs, Pander 77 



(Rosupinate species.) 



(S. (ncinipronites) nutans, James, 1871, pi. vi, figs. 1 a-f 77-79 



S. (Uemipronites) planumhona. Hall, 1847, pi. vi, figs. Z a-h 79-81 



S. (Uemipronites) plicata, James, 1871, pi. vi, figs. 4 a-h 81-82 



S. (Ilemipronitcs) piano convexa, Hall, 1847, pi. ii, flgs. 2 a-A 82-83 



S. (Uemipronites) filitexta, Hall, 1847, pi. vi, figs. 5 a-d 83-85 



S. (Hetnipronites) sulcata, de Vemeuil, 1848, pi. v, figs. 4 a-e 85-86 



S. (Hemipronites) sinuata, James, 1871, pi. v, figs. 5 a-/ 87-88 



(Non-resupiuate specie*.) 



<S. (Hemipronites) alternata (Conr.), Emmons, 1838, pi. vii, figs. 1 a-g 88-91 



Orthis, Dalman, 1828 . 92 



(Resupinate species.) 



O. retrorsa. Salter 1 1858, pi. xi, figs. 7 a-e 92-94 



O. snb(piadrata. Hall, pi. ix, fig8.2?>-j 94-96 



O. occidentalis, HalL, 1847, pi. ix, figs. 3 a-h 96-99 



O. insculpta, Hall, 1847, pi. ix, figs. 1 a-h 99-101 



O. borealis, Billings, 1859, pi. viii, figs. 4 a-f 101-103 



O. bellvla, James, 1871, pi. viii, flgs. 5 a-f 103-104 



O. (?) ella. Hall, 1861, pi. viii, figs. 9 a-d 105-106 



(Nou-res>ipinate species.) 



O. fissicosta. Hall, 1847, pi. viii, figs. 6 a-h 106-107 



O. plic'itella, Hall, 1847, pi. viii, flgt). 7 a-h 108-109 



O. emac.erata. Hall, i860, pi. viii, figs. 1 o-d, and flgs. 2 o-j/ 109-111 



O. emnccrata vnwmultisecta, James, 1871, pi. viii, flg.s. 3 o-d 112 



O. (Vlatystrnphia) biforata, Schlotheiiii, sp., 1820, pi. x 112-114 



Var. 1. O. (Platystrophia) lynx. Von Biuh., \i\. x, tigs. 1 a-e 114-116 



Var. 2. O. (Platystrophia) laticosta, James, 1871, pi. x, figs. 4 a-/ 116-117 



Var. 3. O. (Platystrophia) dentata, Pander ? I James, 1871, pi. s, figs. 3 a-d 117-119 



Var. 4. O. (Plalystrnpihia) acutilirata. Con., sp., 1842, pi. x, figs. 5 o-jr 119-121 



Phynchonella, Fischer de Waldli., 1809 121 



R. dentata, Hall, 1847, pi. xi, flgs. 3 a-d 121-122 



P. capax, Conrad, sp., 1812, pi. xi, figs. 6 o-/ 123-124 



Zygospira, Hall, 1 862 125 



Z. modesta, Say, sp., pi. xi, figs. 4 o-d 125-126 



Z. cincinnatiensis, James, 1871, pi. xi, flgs. 5 a-c ,,. 126 



