702 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



12340. Yoldia evansi (Meek and Hayden). Plesiotype. 



Fort Pierre (Cret.). Black Hills, South Dakota. 



Whitfield, Rept. Geol. and Resources Black Hill's Dakota, 1S80, 

 p. 409, pi. 11, fig. 1. 



1 3582 1. Yoldia frater Dall. Holotype. 



Oligocene. Santa Rosa County, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. IV, 1898, 

 p. 596, pi. 32, fig. 1. 



1 24 1 9. Yoldia microdonta Meek. Holotype and paratypes. 



Mentor (Cret.). Twelve miles southwest of Salina, 

 Kansas. 



Meek, Fourth Ann. Rept. U. S. Geol. Surv. Terr., 1871, p. 304; 

 Rept. U. S. Geol. Surv. Terr., IX, 1876, p. 109, pi. 2, fig. 2. 



1 6488 1. Yoldia palachei Dall. Holotype. 



Eocene. Chichagof Cove, Alaska. 



Dall, Harriman Alaska Exped., IV, 1904, p. 104, pi. 9, fig. 4. 



129799. Yoldia psammotaea Dall. Holotype. 



Claibornian (Eocene). Claiborne, Alabama. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. IV, 1898, 

 P- 596, pk 34, fig. 20 



302. Yoldia scitula (Meek and Hayden). Holot)^pe and paratypes. 

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



Meek, Rept. U. S. Geol. Surv. Terr., IX, 1876, p. no, pi. 28, fig. 9. 

 See Nucula scitula. 



7591. Yoldia stevensoni Meek. Cotypes. 



Upper Carboniferous. Monongalia County, West Virginia. 



Meek, Third Rept. Regents West Virginia Univ., 1870-1871, p. 72. 



22873. Yoldia subelliptica Stanton. Holotype. 



Colorado (Cret.). Poison Canyon, Huerfano Park, Colo- 

 rado. 



Stanton, Bull. No. 106, U. S. Geol. Surv., 1893, p. 94, pi. 21, 

 figs. 6, 7. 



3957. Yoldia ? subscitula (Meek and Hayden). Cotypes. 



Permian. Near mouth of Smoky Hill River, Kansas. 



Meek and Hayden, Pal. Upper Mo., Smithsonian Contr. toKnowl., 

 No. 172, XIV, 1864, p. 6o, pi. 2, figs. 4a, 4b. 



See L,eda subscitula. 



6494. Yoldia subscitula (Meek and Hayden)? Plesiotypes. 



Upper Carboniferous. Nebraska City, Nebraska. 



Meek, Final Rept. U. S. Geol. Surv. Nebraska (Hayden), 1S72, 

 p. 205, pi. 10, fig. 10. 



21699. Yoldia ? subscitula (Meek and Hayden). . Plesiotype. 



Permian. Godwin Creek, Baylor County, Texas. 



White, Bull. No. 77. U. S. Geol. Surv., 1891, p. 27, pi. 4, fig. 4. 



