A. FE. Verrill—The Bermuda Islands; Geology. 169 
Gulick records this species from the Walsingham limestones at 
station 806, near Castle Harbor, and at 807, Knapton Hill, and also 
from the sand-pits at station 818. Also from the Paget sand-pits 
(sta. 808). The specimen figured (550) was from station 807. We 
found it in the red-clay breccia on the west shore of Castle Harbor, 
mostly as casts. It is not known to be living. 
Thysanophora hypolepta Shuttl., Bern. Mitth., March, 1854, p. 129. 
Helix (Microphysa) hypolepta Pilsbry, Proc. Philad. Acad. Nat. Sci., 1889, p. 
82, pl. iii, figs. 6-8; Pilsbry in Heilprin, ‘‘ The Bermuda Islands,” p. 200, 
pl. 16, figs. M. M. 
Thysanophora hypolepta Pilsbry, these Trans., x, p. 49, pl. Ixii, figs. 2a, 2b, 
1900. Verrill, these Trans., xi, p. 728, figs. 68, a, b; ‘‘ The Bermuda Is.,” 
p. 316, figs. 68, a, b, 1902. Gulick, op. cit., p. 413, 1904. 
FIGURE 52a ; RECENT. 
This minute species is still living in Bermuda, but is not known 
from any other locality. It has a broader umbilicus than Z. minws- 
culus and a rounder aperture. They are similar in size and appear- 
ance. Gulick records this from Knapton Hill, station 807, and near 
Paynter’s Vale, station 806, but not from the Paget sands. We 
found it in the sand from the interior of Pecilozonites Nelsoni, 
taken from a road-cut at Bailey Bay. 
Strobilops Hubbardi (Brown). 
Helix Hubbardi Brown, Proc. Acad. N. Sci., Philad., 1861, p. 383. 
Strobila Hubbardi Tryon, Am. J. Conch., ii, p. 259, 1866. Binney, Terrest. 
Mol. U. States, v, p. 261, fig. 153, 1878. 
Strobilops Hubbardi Gulick, op. cit., p. 4138, 1904. 
FIGURE 53, RECENT. 
This minute species, now living in the southern United States and 
Jamaica, was recorded by Gulick as found at station 806, near 
Paynter’s Vale. It is not known as a recent shell in Bermuda. He 
gives the size of the fossil shell as diameter 2.8"; height, 1.2™™. 
Pupa (Bifidaria) servilis Guild. 
Pupa pellucida Bland, Am. Lyc. Nat. Hist., New York, vii, p. 351, 1861. 
Pupwu (Bifidaria) servilis Pilsbry, these Trans., x, p. 497, pl. Ixii, fig. 6, 1890. 
Verrill, op. cit., p. 729, fig. 74a, 1902 ; Bermudas Is., p. 317, fig. 74a. 
Bifidaria servilis Gulick, op. cit., p. 414. 
FIGURE 68a, RECENT. 
This is a minute species, still living in Bermuda, Cuba, the 
Bahamas, ete. It was found by Mr. Gulick in the imperfectly con- 
