1885.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 343 



MIOCENE SPECIES— Contiuued. 

 Turritella variata Conrad. 



Kei>. Expls. &. Survs. R. R. R. from Mississippi River to the Pacific Ocean, vol. vii, 

 p. 195, pi. viii, lig. 5. Mus. No. 1334(i. 

 Venus bisecta Conrad. 



U. S. Expl. Exp., vol. X, Geology, p. 7'24, pi. xvii, figa. 10, a. Mus. No. 3518. 

 Venus brevilineata Conrad. 



U. S. Expl. Exp., vol. X, Geology, p. 724, i)l. xvii, fig. 13. Mus. No. 360G. 

 Venus lamellifera Conrad. 



U. S. Expl., Exp. vol. x. Geology, p. 724, pi. xvii, fig. 12a. Mus. No. 3611. 

 Venus pajaroana Conrad. 



Rep. Expls. & Survs. R. R. R. Mississippi River to the Pacific Ocean, vol. vii, i>. 192, 

 pi. iv, figs. 1, 2. Mus. No. 13318. 



POST-TERTIARY AND TERTIARY SPECIES OF DOUBTFUL AGE. 



Ancylus undulatus Meek. 



Tertiary. Rep. Geol. Expl. 40th Parallel, vol. iv, part i, p. 186, pi. xvii, fig. 126. 

 Mus. No. 12532. 

 Anomia subcostata Conrad. 



Tertiary. U. S. & Mex. Bound. Surv., vol, i, part ii, p. 161, pi. xix, figs, la, b. Mus. 

 No. 9830. 

 Carinifex (Vorticifex) binneyi Meek. 



Tertiary. Rep. Geol. Expl. 40th Parallel, vol. iv, part i, p. 187, pi. xvii, figs. 11, a. 

 Mus. No. 12542. 



Carinifex (Vorticifex) tryoni Meek. 



Tertiary. Rep. Geol. Expl. 40th Parallel, vol. iv, part i, p. 188, pi. xvii, figs. 10, 

 a, h, Mus. No. 12544. 

 Carinifex (Vorticifex) tryoni var. concava Meek. 



Tertiary. Rep. Geol. Expl. 40th Parallel, vol. iv, part i, i». 189, pi. xvii, fig. 10c. 

 Mus. No. 13416- 

 Cassidula alveata Conrad. 



Tertiary. Rep. U. S. & Mex. Bound. Surv., vol, i, part ii, p. 163, pi. xix, figs. 9a, 6. 

 Mus. No. 9901. 



Corbula nasuta Conrad. 



Tertiary, Rep, U, S, & Mex, Bour d. Surv., vol. i, part ii, p. 161, pi. xix, fig. 4. Mus. 

 No. 9899. 



Crepidula princeps Conrad. 



Post-tertiary. Rep. Expls, & Survs, R, R. R. from the Mississippi to the Pacific, 

 vol. V, p. 326, pi. vi, figs. 52, a. Mus. No. 1839. 

 Fissurella crenulata (Sow.) Conrad. 



Post-tertiary. Rep. Expls. & Survs. R. R. R. from the Mississippi to the Pacific, 

 vol. V, p. 326, pi. V, fig. 44. Mus. No. 1851. 

 Melania? sculptilis Meek. 



Tertiary. Rep. Geol, Expl. 40th Parallel, vol. iv, part i, p. 195, pi. xvii, fig. 8. 

 Mus. No. 12541. 



Melania ? subsculptilis Meek. 



Tertiary. Rep. Geol. Expl. 40th Parallel, vol. iv, part i, p. 196, pi. xvii, fig. 9. 

 Mus. No. 12.551. 



Natica limula Conrad. 



Tertiary. Rep. U. S. & Mex. Bound. Surv., vol. i, part ii, p. 162, pi. xix, fig. 7. 

 Mus. No. 9898. 



