232 BTTLLKTIN r>:\, UNITED STATES NATIONAL MUSEUM. 



23870. Domatoceras umbilicatum Hyatt. Holot3'pe. 



Upper Carl)oniferous. Oswego, Kansa.s. 



H%'att, Second Ann. Rept. (reol. vSurv. Texas, 1S91, p. 343, text 

 figs. 45. 46. 



39940. Donacicrinites simplex Trocst. Chirotype. 



Silurian. Decatur County, Tennessee. 



Troost, Proc. Anier. Assoc. Adv. Sci., II, US50, p. 62. 



108450. Donax aequilibrata Dall. Holotj'pe. 



Pliocene. Cape Fear River, North Carolina. 



Dall, Trans. Wagner Free Inst. Sci. Pliila.. Ill, Pt. V, 1900, ]>. 

 96S, pi. 28, fig. 17. 



1 14682. Donax chipolana Dall. Holotype. 



Oligocene. Chipola River, Calhoun Comity, Florida. 



Dall, Trans. Wagner PYee Inst. Sci. Phila., Ill, Pt. V, 1900, p. 966, 

 pi. 44- fig- 20. 



228S8. Donax cuneata Stanton. Holotype. 



Colorado (Cret. ). Bear River City, Wyoming. 



Stanton, Bull. No. 106, U. S. Geol. Surv., 1893, p. no, pi. 25, 

 fig. I. 



1 15034. Donax emmonsi Dall. Plesiotype. 



Miocene. Magnolia, Dttplin Count}', North Carolina. 



Dall, Trans. Wagner Free Inst. vSci. Phila., Ill, Pt. V, 1900, p. 967, 

 pi. 28, fig. 16. 



1 15654. Donax flabagelloides Guppy. Holotj'pe. 



Pliocene. Malura, Trinidad, British West Indies. 



Gnpi^y, Geol. Mag., Pondon. Dec. II, I, 1874, p. 435, ])1. 18, fig. 10. 



22889. Donax ? oblonga vStanton. Cotypes. 



Colorado (Cret. ). Coalville, Utah. 



vStanton, Bull. No. 106, U. S. Geol. Surv., 1893, p. ni, ])1. 25, 

 fig. 2. 



3613. Donax ? protexta Conrad. Holotype. 



Miocene. Astoria, Oregon. 



Conrad, Wilkes U. S. F^xpl. Rxped., X, 1S49, pp. 723, 724, Atlas, 

 pi. 17, fig. 9. 



=:Solen (Plectosolen ) protexttis. 



1 15722. Dosinia ( Dosinidia ) acetabulum obliqua Dall. Holotype. 

 Chesapeake (Miocene). Ahuii P)luff, IHorida. 



Dall, Trans. Wagner I'ree Inst. vSci. Phila., Ill, Pt. VI, 1903, p. 

 1231, ])I. 54, fig. 13. 



164869. Dosinia ? alaskana Dall. Holotype. 



Miocene. Popof Island. vSlniniagins, Alaska. 



Dall, Ilarriuiaii .\laska Ivxjied., I\', 1904, p. 1 15, pi. 10, fig. 7. 



