604 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



156884. Solen (Plectosolen) protextus (Conrad)? Plesiotypes. 



Upper Eocene or Miocene. Coos Bay, Oregon. 



Dall, Trans. Wagner Free Inst. Sci. Phila. , III, Pt. V, 1900, p. 953. 

 See Donax? protexta. 



449. Solen subplicatus Meek and Hayden. Holotype. 



Fox Hills (Cret.). Moreau River, South Dakota. 



Meek and Hayden, Proc. Acad. Nat. vSci. Phila., VIII, 1856, p. 82. 

 = Solemya subplicata. 



8922. Soleniscus brevis White. Cotypes. 

 8925. Upper Carboniferous. Coyote Creek, and near Taos, New 



Mexico. 



White, Rept. U. S. Geogr. Surv. W. 100th Merid., Ill, Suppl., 

 1S81, p. 28, pi. 4, figs. 5a-5c 



8923. Soleniscus planus White. Cotypes. 



Upper Carboniferous. Coyote Creek, New Mexico. 



White, Rept. U. S. Geogr. Surv. W. 100th Merid., Ill, Suppl., 

 1881, p. 29, pi. 4, figs. 4a-4c. 



9142. Soleniscus ? (Macrocheilus ) ponderosus Swallow? 



Plesiotypes. 

 Upper Carboniferous. Vermilion County, Illinois. 



White, Proc. U. S. Nat. Mus., VI, 1883, p. 187, pi. 8, figs. 1,2; 

 Thirteenth Ann. Rept. Geol. Surv. Ind., 18S4, p. 156, pi. 34, 

 figs. 1, 2. 



9372. Soleniscus (Macrocheilus ) ventricosus Hall. Plesiotypes. 

 1 22 10. Upper Carboniferous. Springfield and Danville, Illinois. 



White, Proc. U. S. Nat. Mus., VI, 1S83, p. 187, pi. 8, fig. 12; 

 Thirteenth Ann. Rept. Geol. Sun-. Ind., 1884, p. 155, pi. 34, 

 figs. 11, 12. 



14380. Solenomya curta Walcott. Cotype. 



Lower Carboniferous. Eureka District, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 242, pi. 22, figs. 

 6, 11. 



47412. Solenomya varsoviensis Worthen. Plastotype. 



Keokuk (Miss.). Warsaw, Illinois. 



Worthen, Geol. Surv. 111., VIII, 1890, p. 131, pi. 19, fig. 8. 



18337. Solenopleura bombifrons Matthew. Plesiotype. 



Lower Cambrian. Conception Bay, Newfoundland. 



Walcott, Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 656, pi. 98, 

 figs. 5- 5a. 



18338. Solenopleura ? harveyi Walcott. Cotype. 



Lower Cambrian. Conception Bay, Newfoundland. 



Walcott, Proc. U. S. Nat. Mus., XII, 1889, p. 45; Tenth Ann. 

 Rept. U. S. Geol. Surv., 1890, p. 656, pi. 97, figs. 7, 7a. 



