TVI'K Sl'K(;lMENfS OF INVKKTKHUATK KOSSILS. 081 



107456. Ultimus precursor Dall. Holotype. 



Pliocene. Limon, Costa Rica, Central America. 



Dall. Proc. r. S. Nat. Mu.s., XIX, 1X96, ]>. 31S, ]>!. 29, fij^s. 2, 3. 



1 14445. Umbonium ( Solariorbis ) duplinense Dall. Holotype. 



Miocene. Natural Well, Duplin County, North Carolina. 



Dall, Proc. U. S. Nat. Mus., XVIII, 1895, p. 46; Trans. Wagner 

 I'Vee In.st. Sci. Pliila., Ill, Pt. VI, 1903, p\. 60, fij^s. S, 9, 10. 



113596. Umbonium (Solariorbis) floridanum Dall. Holotype. 



Pliocene. Caloosahatchie, Florida. 



Dall, Proc. U. S. Nat. Mu.s., XVIII, 1895, p. 45; Trans. Wagner 

 Free Inst. Sci. Phila., Ill, Pt. VI, 1903, pi. 60, figs. 6, 7. 



1 14446. Umbonium (Solariorbis) undula Dall. Holotype. 



Miocene. Natural Well, Duplin County, North Carolina. 



Dall, Proc. U. vS. Nat. Mus., XVIII, 1895, p. 46; Trans. Wagner 

 Free ln.st. vSci. Phila., Ill, Pt. VI, 1903, pi. 60, figs. 11, 12. 



9042. Unio aldrichi White. Cotypes. 



L,arainie (Cret.). Black Buttes Station, Wyoming. 



White, Twelfth Ann. Rcpt. U. S. Geol. Surv. Terr., Pt. I, 1883, 

 p. 62, pi. 29, figs. 2a-2b; Third Ann. Repl. U. S. Geol. Surv., 

 1883, p. 433, pi. 15, figs. 4, 5. 



23123. Unio barbouri White. Pla.stotypes. 



Dakota (Upper Cret.). Five miles west of north of Fair- 

 burg, Nebraska. 

 White, Proc. U. S. Nat. Mus., XVII, 1894, p. 133, pi. 8, figs. 1-3. 



7S11. Unio belliplicatus Meek. » Cotypes. 



Bear River (Cret.). Limestone Hill, Bear River, Utah. 



Meek, Proc. Am. Philos. vSoc, XI, 1871, p. 430; Rept. U. vS.Geol. 

 Rx})l. 40th Par., IV, Pt. I, 1877, p. 165, pi. 16, fig. 4a. 



8146. Unio belliplicatus Meek. Plesiotypes. 



Bear River (Cret.). Mouth of Stilphur Creek, Wyoming. 



White, Third Ann. Rept. U. S. Geol. vSurv., 1883, p. 430. pi. 6, 

 figs. 1-3; Bull. No. 128, I^ S. Geol. vSurv., 1895, p. 34, pi. 2, 

 figs. 5, 6. 



9051. Unio brachyopisthus White. Cotypes. 



Laramie (Cret. ). Black Buttes Station, Wyoming. 



White, Twelfth Ann. Rcpt. U. S. Geol. vSurv. Terr., Pt. I, 1883, 

 p. 64, pi. 22, figs. 2a, 2b. 



107745. Unio (Unio) caloosaensis Dall. Cotj-pes. 



Pliocene. Calocsahatchie River, near P'ort Thompson, 

 Florida. 



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

 p. 688, pi. 25, figs. 6, 12a. 



8359. Unio clinopisthus White. Holotype. 



Focene. Washakie Station, W^yoming. 



White, Proc. U. S. Nat. Mus., V, 1882, p. 94, pi. -,, figs, i, 2; 

 Third Ann. Rept. U. S. Geol. vSurv., 1883, p. 434, pi. 28, 

 figs. I, 2. 



