1 1 2 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



Page. 



Siphonariidce. 



f Aiiisompon, M. &. n 162 



A. sexsulcatus, M. & H.? 1856, figs. 4 and 5, p. 162 162 



I'OSSILS OF THE BEAR lilVEK FKESH OR BRACKISH WATER BEDS. 



MoUusca. 

 Lamellihranchiata. 

 JJnionida'. 

 TTnio, Retzius .* 164 



U. vetuatus. Meek, 1860, pi. x vi, flgs. 5, 5 (i-c 164-165 



V. bellipUcatus, Meek, 1870, pi. xvi, fijjs. 4,4 a 165-1G7 



Cyrenidce. 



Corbicula, Benson 1 67 



C. (Veloritina) durteei. Meek, 1870, pi. xvi, figs. 6 a-g 167-170 



Corbulidm. 



Corbula,'Brug 170 



C. (Anisorhynchus) pyriformis. Meek, 1860, pi. x vii, figs. 2, 2 a-d 170-174 



C. (Anisorhnncliux?) engtbnanni. Meek, 1860, pi. xvii, flgs. 1,1a 174-175 



Gasteropoda. • 



Aiirieididce. 



lihytiphorus, Meek, 1 873 175 



R. priscus, Meek, 1860, pi. xvii. fi^s. 6 and 6rt 175-176 



Ceriphamidfi'. 

 • Pyrgulifera humerosa, ISIeek, iNGli, pi. xvii, figs. 19, 19 a, and fig. 6 , p. 177 170-178 



yiviparida>. 



Viviparus, Montfort 178 



r. conmrfi, M. & H., 1856, pi. xvii. tigs. 18, 18 a 178-179 



Gampeloma, KaQueaqne 179 



C. macrospira, Meek ? 1872, pi. xvii, figs. 17 a, 6 179-181 



Oampeluiiia (undt. sp.). Meek, 1877, pi. xvii, figs. 15 a, b, and fig. 16 a-c 181 



Limnceidce. 



Xnnna'a, Lamarck 181 



L. (Limnophysa) nitidula, Meek, 1860. pi. xvii, flgs. 5, 5 a 181-182 



SPECIES OF UNDOUBTED TERTIARY AGE. 



Mollugca . 

 Lamellibrancliiala. 



Cyrenido'. 



Siihceriurn, Scopoli. 



S. rugosum, Meek, 1870, pi. xvi, tig.s. 2, 2 a, b '. 182-183 



S. ? idahoense. Meek, 1870, pi. xvi. fig. 1, 1 a 183-184 



Unionidrr'. 

 Unio, Retzius ] 84 



• U. ;iaj/dewi. Meek, 1860, pi. xvi, figs. 3, 3 a,b 184-185 



Gasteropoda. 



Limnceidce. 



Ancylus.GeolXrny 186 



A. undulatug, Meek, 1870, pi. xvii, figs. 12 a, 6 186 



Carini/ex, Binney 187 



Subgenus Vorticifex, Meek, 1870 187 



C. ( Vorticifex) binneyi, Meek, 1870, pi. xvii, figs. 11, 11 a 187-188 



0. (Vorticifex) <»7/o/u, Meek, 1870, pi. xvii, figs. 10, 10 a-c 188-189 



P2a«or6wf, Guettard 189 



/'. «pecfa6tZi«, Meek, 1860, pi. xvii, fig.s. 13, 13 a-/ 189 



P. spectabilis var. utahensis, Meek, 1860, pi. xvii, flgs. 14, 14 Or-c 190-191 



Lnxnff'a, Lamarck 191 



L. (Limno7)/iJWf) i'<'<wsta. Meek, 1860, pi. xvii, flgs. 4, 4 a, 6 191 



L. «n»?7i«. Meek, 1860, pi. xvii, figs. 3, 3 a - , 191-192 



L. ( I'oli/rhytis) ki7igii. n. s., Meek, 1877, figs. 6 and 7, p. 192 192-193 



Ceripliaisiiclce. 



Goniobasis, Lfa 193 



G. simpsmii. Meek, 1860, pi. xvii. figs. 7,7 a-d 193-105 



Melaniidw. 



Jfetania, Auct 195 



M. '! sculptilis, Meek, 1870, pi. xvii, fig. 8 .'. 19.5-196 



M. ? sttbsculptilis, Meek, 1870, pi. xvii, fig. 9 196-197 



