WRITINGS OF C. D. WALCOTT. 193 



Page. 



0. mucroimta, EaWi, 1843 124-126 



O.setigera, Hall, 1843 125 



O. macrostriata, u. a., Walcott, 1884, pi. ii, fig. 13, pi. xiii, figs. 14, 14 o-« 126-127 



Cfilistriata, U.S., "Walcott, 1884, pi. xiii, flga. 15, 15 a , 127-128 



Prodxietns, Soweiby 128 



Subgenus Prodtictella, Hall, 1867 128 



P. { F'roductella) .txibaculeatus, Murch, pi. vii, fig. 2, pL liii, figs. 19, 19 a, 20, 20 a 128-129 



P. {Productella) shumardianus, Hall, 1858, pi. xiv, fig, 1 129-130 



P. {Productella) hallanus, n. s., Walcott, 1884, pi. xiii, flgs. 17, 17 o 130-131 



P. (Productella) navicella, Hall, 1857, pi. xiii, fig. 9 131 



P. (Productella) truncatus,B.!\\\, 1857. pi. xiv, fig. 2 131-132 



P. (Productella) lachrymosus var. limut, Conrad, sp., 1842, pL xiii, figs. 18, 18 a 182 



P. (Productella) lachrymonus vnr. stigmatug. Hall, 1867 132-133 



P. (Productella) speciosus, H.M, 1857, pi. xiii, fig. 8 133 



P.hirsutiforme,n.s., Walcott, 188J, pi. ii, figs. 10, 10 a 133-134 



Spirifera, Sowerby 134 



<S'. disjuncta, Sowerby, 1840 134-135 



S. raricosta, Conrad, sp., 1842, pi. iv, figs. 2,2 o, pi. xiv, fig. 12 135 



Kvaricom, Hall, 1857 136 



S.jjarn/anfr, Hall?, 1858, pi. xiv, fig 10 137 



Spirifera (sp. undt.), Walcott, 1884 137 



S. englemanni. Meek, 1860 138 



S. pinonensis, Meek, 1870, pl.iv, figs. 1, 1 a-f 138 



Subgenus Martinia, McCoy 139 



S. (Martinia) glabra, Martin 139 



S. (Martiiua) glabra var. nevadensis, n. var. Walcott, 1884, pi. iii, fig. 5, pi. xiv, figs. 14, 



14 a, b 139-140 



S. (Martinia) viaia, Billings, 1860, pi. iii, figs. 1, 1 a-e, pi. xiv. figs. 13, 13 a 141-142 



S. (Martinia) undifera, Roemer, 1844, pi. iii, figs. 3, 3 a, 6 ; 6, 6 o, pi. xiv, figs. 11, 11 a, b. 143-140 



Cyrtina, Davidson 146 



C.davidsoni,u.»., Walcott, 1884, pi. iii, figs. 2, 2 a-« 146-147 



0.hamiltonensi.s, Hall, 1857 147 



Nucleospira, Hall - 147 



A^. concmni. Hall, 1843 147 



Athyris, McCoy 148 



J.. (7n(7eiicrt, Hall, 1861 148 



Athyris (sp. undt), Walcott, 1884 148 



Jf«nVcHa, Hall 148 



Whitfieldia, Davidson 148 



M.(Whitjieldia) ?ia«M,J(i, Conrad, sp., 1842,pl.iii,fig.8,8 a,b 148-149 



Atrypa, Dalman 150 



A. reticularix (Linnaeus, sp.), Dalman, pi. xiv, figs. 6, 6 a, & 150 



A. desquamata, Sowerby, pi. xiv, figs. 4, 4 a 150-151 



Trematospira, Hall 151 



T.infrequeiis,Sa.n,ji. .s., Walcott, 1884, pi. iv, figs. 3, 3 0, 6 151 



Rhynchonella, Fischer 152 



J?. /iors/ordt, Hall, 1860, pi. xiv,flg.3; pl.xv,fig.6 152 



R. tethy s,Bil\mg!i,lS60 152 



R.? occidens.B. s., Walcott, 1884,pl. xv,flg8.3,3a, 6 152-153 



R. castanea. Meek, 1868, pi. xv, figs. 1, 1 a ; 4, 4 a 153-155 



J?, dupiicdfa. Hall, 1843, pi. xiv, fig. 8 155 



iJ.pit(77iM«, Martin, 1809, pi. xiv, figs. 7, 7 a 155-157 



R.emmonsi,n. & W., 1877 157 



Subgenus Leiorhynchus, Hall 157 



R. (Lciorhynchut) nevadensis, n. s., Walcott, 1884, pi. xiv, figs. 9, 9 a, 6 157-168 



R. (Leiorhynchus) sinuatu^. Sail, 1867,pLxiv. fig. 5 168-159 



R. (Leiorhynchus) laura, BiUings, 1860 159 



Pentamerus, Sowerby 159 



Subgenus Gypidula Hall 159 



P. comis, Owon, 1852, pi. iii, figs. 4,7; pi. xiv, figs. 15, 15 a,b; pi. xv, figs. 5, 5 a, t. .. 159-161 



P.lotis, U.S., Walcott, 1884, pi. iii, figs. 9, 9 o-c 161-162 



Cryptonella. Hall 163 



G.? circula, n. s., Walcott, 1884, pi. xv, figs. 2, 2 rt, 6 163 



C. pinonensis, n.n., Walcott, 1884, pi. iv, figs. 4, 4 a,b 163-164 



120— Bull. 30 13 



