382 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



157916. Macoma laxa Dall. Holotype. 



Pliocene. Caloosahatchie River, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. V, 1900, 

 p. 1050, pi. 47, fig. 10. 



1 0733 1. Macoma lyelli Dall. Cotypes. 



108795. Miocene. Gay Head, Marthas Vineyard, Massachusetts. 



Dall, Amer. Journ. Sci. (3), XLVIII, 1894, p. 298; Trans. Wagner 

 Free Inst. Sci. Phila., Ill, Pt. V, 1900, p. 1049, pi- 37> fig s - 9 -11 - 



135708. Macoma (Psammacoma) olivella Dall. Holotype. 



Oligocene. Bowden, Jamaica. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. V, 1900, 

 p. 1054, pi. 47, fig. 20. 



6086. Macoma (Psammacoma) tageliformis Dall. Cotypes. 



Pleistocene. Corpus Christi, Texas. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. V, 1900, 

 P- io55- 



135702. Macoma (Psammacoma) tracta Dall. Holotype. 



Oligocene. Bowden, Jamaica. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. V, 1900, 

 p. 1053, pi. 47, fig. 13. 



135695. Macoma (Cymatoica) vendryesi Dall. Holotype. 



Oligocene. Bowden, Jamaica. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. V, 1900, 

 p. 1056, pi. 46, fig. 3. 



1 1463 1. Macrocallista acuminata Dall. Holotj^pe. 



Chipola (Oligocene). Alum Bluff, Chattahoochee River, 

 Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. VI, 1903, 

 p. 1255, pi. 57, fig. 3. 



164889. Macrocallista (Xhionella ? 1 gilberti Dall. Holotype. 



Eocene. Chichagof Cove, Alaska. 



Dall, Harriman Alaska Exped., IV., 1904, p. 107, pi. 9, fig. 10. 



107396. Macrocallista pittsburgensis (Dall). Cotypes. 



Tejon (Eocene). Pittsburg, Oregon. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. VI, 1903, 

 P- 1253. 



See Meretrix (Callista) pittsburgensis. 



8477. Macrocheilus anguliferus White. Cotypes. 



Upper Carboniferous. Camp Cottonwood, Spring Moun- 

 tain Range, Nevada. 



White, Prelim. Rept. U. S. Geogr. Surv. W. 100th Merid., 1874, 

 p. 22; Rept. U. S. Geogr. Surv. W. 100th Merid., IV, Pt. I, 

 1S77, p. 160, pi. 12, figs. 3a-3c, 3e, 31. 



