WRITINGS OF C. D. WALCOTT. 193 



Page. 



O.TOMcronrttrt.HaU?, 1843 124-125 



O.setigera, Hall, 1843 125 



0.macro8triata,n. »., Walcott, 1884, pi. ii, fig. 13, pL xiii, figs. 14, 14 o-c 126-127 



a/Zi««ria«a, 11. s., Walcott, 1884, pi. xui,fig8. 15, 15 a 127-128 



Prodiictiis, Sowerby 128 



Snhgenna Produclella, B.a\l,lS67 128 



/'. (Productdla) subaculeatus, Miircb, pi. vii, fig. 2, pL xili, figs. 19, 19 a, 20, 20 a 128-129 



P. (Productella) shuinardiarms,Tl3W, 1858, pi. xiv, fig, 1 129-130 



P. ( Productella ) hallanus, n. s. , Walcott, 1884, pL xiii, figs. 17, 17 a 130-131 



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



P. (Productella) (/-wncatu*, Hall. 1 857. pi. xiv, fig. 2 131-132 



P. (Productella) laclm/mosus var. h'mi/*, Conrad, sp., 1842, pi. xiii, figs. 18, 18 o 132 



P. (Productella) laehrymosus var. «<iffma<««, Hall, 1867 132-133 



P. (Productella) speciosuf, Rail, 1857, pi. xiii, tig. 8 133 



P. fcrgMh/orj/K-.n.s., Walcott, 1881,pl.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 a, pL xiv, fig. 12 135 



S. varicosa, Hall, 1857 136 



S. parry ana, Hall ?, 1858, pi. xiv, fig . 1 137 



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



S. englemanni. Meek, 1860 138 



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



Subgenus Martinia, McCoy 139 



S. (Martinia) glabra, Martin 139 



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



14a,b 139-140 



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



S. (Martinia) undi/era, Roemer, 1844, pi. iii, figs. 3, 3 o, 6 ; 6, 6 a, pi. xiv, figs. 11, 11 a, 6. 143-146 



Cyrtina, Davidson 146 



C.davidsoni,u.9.., Walcott, 1884, pi. iii, figs. 2, 2 a-e 146-147 



G.hamiltonensis,'B.&\\,\%Zl 147 



Nucleospira, Hall 147 



N. concinni. Hall, 1843 147 



Athyris, McCoy 148 



A. angelica. Hall, 1861 148 



Athyris (sp. undt.), Walcott, 1884 148 



Meristella,Hall 148 



Whitfieldia, Davidson 148 



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



Atrypa, Dalman 150 



A. reticularis (Liiinanis, sp.), Daltnan, pi. xiv, figs. 6, 6 a, 6 150 



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



Trematospira, Hall 151 



T. infrequens. Hall, n. s., Walcott, 1884, pi. iv, figs. 3, 3 a, 6 151 



Rhynchonella, Fischer 152 



iJ. 7ior«/oriit, Hall, 186U, pi. xiv,flg.3; pLxv,fig.6 152 



a. tethys, Billmga, 1860 152 



P.? occidens, m. s., Walcott, 1884, pi. XV, figs. 3, 3 a, 6 152-153 



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



iS. dujjJtcata, Hall, 1843, pi. xiv, fig. 8 155 



J?. ptt<7nM«, Martin, 1809, pi. xiv, figs. 7, 7 a 155-157 



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



Subgenus Leiorhynehus, Hall 157 



R. (Leiorhynchui) nevadensis, n. s., Walcott, 1884, pL xiv, fig8.9,0a,b 157-158 



R. (Leiorhynehus) sinuatus. Hall, 1867, pL xiv. fig. 5 158-159 



R. (Leiorhynehus) laura, Billings, 1860 159 



Pentamerus, Sowerby 159 



Subgenus Gypidula Hall 159 



P. comis, Owon, 1852, pi. iii, figs. 4,7; pi. xiv, figs. 15, 15 «, 6 ; pi. xv, figs. .5, 5 a, (. .. 159-161 



P.lotis, n. s., Walcott, 1884, pi. iii, figs. 9, 9 a-c 161-162 



Cryptonella, Hall 163 



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



(7. pinonensis, ii. s., Walcott, 1884, pi. iv, figs. 4, 4 a,b 163-164 



320— Bull. 30 13 



