N0.12&4. ILLUSTRATIONS OF AMERICAN SHELLS— BALL. 501 
Oolloctod at White Oaks, New Mexico, at an altitude of 7,000 feet, 
by Rev. E. H. Ashinuii. The types are of a yellowish straw color. 
U.S.N.M.. 107611. 
ASHMUNELLA ASHMUNI Dall. 
Plate XXVIII, fi^^'. 4, 6, 9. 
Polygyrn ashmuni Dall, Proc. U. S. Nat. Mus., XIX, Jan., 1897, y>. 342. 
Collected at Bland, New Mexico, at a height of 8.000 feet above the 
sea, by the Rev. E. H. Ashmun. U.8.N.M., 107610. 
HOLOSPIRA (HAPLOSTEMMA) HAMILTONI Dall. 
Plate XXVIII, figs. 2, 11. 
HolospIrK {Haplostemma) lidmiltoni Dall, Nautilus, XI, No. 4, Aug., 1897, p. 38. 
Collected in the Rio Grande Mountains, Brewster County, Texas, at 
a height of 3,500 feet, feeding on Selagmella lepidophylla Spring, by 
James M. Hamilton. The shell is pinkish white with a darker livid 
apex. U.8.N.M., 107759. 
CERES NELSONI Dall. 
Plate XXVIII, figs. 1, 3, 5, 8. 
Ceres nelsoni Dall, Nautilus, XII, No. 3, July, 1898, p. 271. 
Collected by E. W. Nelson at Pilitla, San Luis Potosi, Mexico. 
The umbilical region is pale lemon yellow. The rest varies from 
lemon yellow to deep orange, with a minute sculpture of small fine 
elevated threads which tend to break up into granules. U.S.N.M., 
107823. 
SIPHONARIA LINEOLATA Orbigny. 
Plate XXVIII, figs. 10, 13. 
Slphonaria Uneokda Orbigny, Moll. Cubana, I, 1842, p. 232, pi. xvii, figs. 13, 15. 
Siphonaria naufragum Stearns, Proc. Boston Soc. Nat. Hist., XV, 1872, p. 23. 
Cuba, Orbigny; St. Augustine, Hemphill; Amelia Island, East 
Florida, Stearns;"^ Jupiter Inlet, etc., Dall. U.S.N.M., 97267. 
Whitish or brownish, with radiating blackish lines conspicuous 
internally, the radial sculpture always fine and close and the form 
verj" regular for a limpet. The name has been misprinted Imeata by 
Beau and Krebs. 
SIPHONARIA ALTERNATA Say. 
Plate XXVIII, figs. 1%, 14. 
Patella alternata Say, Journ. Acad. Nat. Sci. Phila., V, 1826, p. 215. 
Sij)honana alternata Say, Am. Conch., IV,' 1826, pi. xxxviii. — Binney's Say, p. 
192. 
Siphonaria brunnea (Hanley) Jones, Moll. Bermuda, Trans. Nova Scotian Inst., 
II, 1864, Pt. 2, p. 21. 
f Siphonaria pieta OnBiayiY (part), Moll. Cubana, I, 1842, p. 231. 
