502 PROCEEDINGS OF THE NATIONAL MUSEUM. 
F^ast Florida, Bermuda, south to Cuba and west to Yucatan. U. S. N. M. , 
9-1481. 
The figured specimen is from Bermuda, collected by Goode, and is 
what Jones referred to S. hrunnea Hanle3^ It appears to be merely 
a better-nourished, slightly darker-colored geographical race of the 
alternata of Say. If the S. jMcta Orbigny (1842) comprises only a 
single species, which is not yet certain, this species extends southward 
to Rio Janeiro, Brazil. It is somewhat singular that no good figure 
of Say's shell is to be found in the whole conchological literature of 
America, though the shell has been known (chiefly by bleached, worn 
specimens) for three-quarters of a century. 
EAST AMERICAN MARINE SPECIES. 
CYLICHNA VERRILLII Dall. 
Plate XXIX, fig. 1. 
Oiflichna verriUii Dall, Rep. Blake Gastr., Bull. Mus. Comp. Zool., XVIII, Jan. 
1889, p. 54. 
Collected off the coast of North Carolina at various stations in from 
50 to 124 fathoms, sand, with the bottom temperatures from 58° to 
75° F., by the U. S. Fish Commission steamer Albatross. Bluish white 
with a nearly translucent periostracum and finely spirally striated. 
U.S.N.M., 94477. 
RETUSA MAYOI Dall. 
Plate XXIX, fig. 2. 
Utriculus mayoi Dall, Rep. Blake Gastr., Bull. Mus. Comp. Zool., XVIII, Jan., 
1889, p. 46. 
Collected from the stomach of a haddock at Portland, Maine, by Mr. 
John Mayo. U.S.N.M., 95269. 
Shell solid, yellowish white, with little or no spiral striation. 
UMBRACULUM (HYALOPATINA) RUSHII Dall. 
Plate XXX, fig. 5. 
Umbraeuhim [Hyalopatina) nishii Dall, Rep. Blake Gastr., Bull Mus. Comp. 
Zool., XVIII, 1889, p. 61.— PiLSBRY, Man. Conch., XVI, 1896, p. 185, pi. li, 
fig. 58. 
Dredged off' Great Isaac Light, Bahamas, in 30 fathoms, sand, by 
Dr. W. H. Rush, U. S. N. U.S.N.M., 61222. 
The shell is almost perfectly flat and very thin; bluish translucent 
white, dextral with a sinistral nucleus. 
TEREBRA TEXANA Dall. 
Plate XXIX, fig. 8. 
Terehra texana Dall, Nautilus, XII, No. 4, Aug., 1898, p. 45. 
From the Gulf coast of Matagorda Island, Texas, J. D. Mitchell. 
U.S.N.M., 107373. 
