WRITINGS OF C. D. WALCOTT. 197 



Page. 

 Modiola, Lamarck 239 



M.f nevadensis, n. s., "Walcott, 1884, pl.xix, flg.8 239 



Modiomorpha , Hall 239 



M. ambigua, n. s., Walcott, 1884, pl.xx, fig. 1 239-240 



M.? desiderata, n. s., Walcott, 1884, pi. xx, fig. 3 240 



M. ? pintoengis, n. s., Walcott, 1884, pi. xx, fig. 2 240-241 



Nucula, Lamarck 241 



iV". insularis, n. s., Walcott, 1884, pi. xx, flg. 14 240 



N. levati/orme. n. s., Walcott, 1884, pi. xxii, figs. 1, la 241-242 



Solenomya, Lamarck 242 



;S. curta, n. 8., Walcott, 1884, pi. xxii, figs. 6, 11 242 



Macrodon, Ly cett 243 



M. hamiltonce, Hall, 1870, pi. xxiii, figs. 5, 5 a-c 243 



M. truncatus, ii. s., Walcott, 1884, pi. viii, flg. 2 243-244 



Grammysia, De Verneuil „ 244 



G. hannibalensis, Sb umard, ap., 1855, pi. xx, fig. 4 244 



G. arcuala, Conrad, sp., 1841, pi. xx, fig. 5 • 245 



Edmondia, De Koninck 245 



E. medon, n.s., Walcott, 1884, pi. xxiii, fig. 6 245 



E.] drcularis, n. s., Walcott, 1884, pi. xxii, fig. 9 246 



Pleurophorus, King 246 



P. meeki, n. s., Walcott, 1884, pi. viii, fig. 3 246 



SanguinoUteg, McCoy 247 



S. ceolus, H. & W.. 1870, pi. xx, figs. 6, 7, 9 247 



S. retusus, n. s., Walcott, 1884, pi. xx, fig. 10 247-248 



,S'. Hmplex, n. .s., Walcott, 1884, pi. xx, fig. 11 248 



S. salteri, u. a., Wdlcott, 1884, pi. xx, fig. 12 248-249 



S.? n£»*iia,n. 8., Walcott, 1884,pl. xix, fig. 9 249 



& strtatw*, n. s., Walcott, 1884, pi. xxiii, fig. 7 249-250 



Microdon, Conrad 250 



Subgenus Cypricardella, Hall 250 



If. ( Cypricardella) connatus, n. s., Walcott, 1884, pi. xxiv, figs. 5, 5 a 250-251 



Cardiola, Broderip 251 



a ? filicostata, n. s., Walcott, 1884, pi. xxii, figs. 4, 4 a 251 



Schizodus, King 252 



S. cuneatus, Meek, 1875, pi. xx, flg. 8 252 



a. deparcus,Q.a., Walcott, 1884, pi. xxii, fig. 5 252 



S. curti/orme,Ti.a., Walcott, 1884, pi. xxii, figs 3, 3 a 253 



S. pintoensis, n. s., Walcott, 1884, pi. xxii, flgs. 2, 2 a 253-254 



Gasteropoda. 



Platycerag, Conrad 254 



P.occideng, n. s., Walcott, 1884, pi. xxiv, figs. 9,9 a 254 



P.piso,n.a., Walcott, 1884, pi. xxiv, figs. 7, 7 a,b 254-255 



Platyostoma, Conrad 255 



P. inornatwrf, n.s., Walcott, 1884, pi. xxiv, figs. 3, 3 a 255 



Euomphalus, Sowerby 255 



E. (Straparollus) mhrugosug, M. & W., 1873, pi. xviii, fig. 19 255-256 



Bellerophon, Montfort 256 



B. majusoulus, n. s., Walcott, 1884, pi. xxiii, figa. 1, 1 a; pi. xxiv, fig. 6, and fig. 3, p. 257. 25G-257 



B.cextilig, Hall, ? 1877, pi. xviii, fig. 18 257-258 



Loxonema, Phillipa 258 



L. bella, n. s., Walcott, 1884, pi. xxiv, figs. 1,1a 258-259 



Pleurotomaria, Defrance 259 



P. nodomarginata, McChesney, 1860, pi. xviii, flg. 15 259 



P. nevadensig, n. a., Walcott, 1884, pi. xxiv, figs. 2, 2 a 259-260 



Macrocheilus, Phillips 260 



Maerocheilus, sp., ? Walcott, 1884, pl.xxiv,fig.8 •- 260 



Metoptoma, Pbillips 260 



M. peroccideng, n. a., Walcott, 1844, pi. xviii, flg. 16 260 



Ampullaria, Lamarck 261 



AApowelli, Walcott, 1883. flgs. 4, 5, p. 261 261 



Pulmonifera. 



Physa, Drapamand 262 



P.prisca, Walcott, 1883, fig. 6, p. 262 262 



Zap<2/c7iiMS, Walcott, 1883 263 



Z. cari(07iana, Walcott, 1883, fig. 7, p. 263 263 



