194 A. KE. Vervill—The Bermuda Islands ; Geology. 
locality. It was not found as a fossil by our parties nor by Gulick. 
It is an abundant living species, found also in the Bahamas. 
Pupa (Bifidaria) rupicola. See p. 170. Ficure 68c. 
One specimen was found by Mr. Gulick at station 808. 
Figure 67.—Polygyra microdonta, enlarged ; from photog. by A. H. V. 
Figure 68.—a, Pupa servilis, x9; b, Pupa jamaicensis, x9; ce, Pupa rupicola, 
x9; after Pilsbry. 
Figure 69.—Pupoides marginatus, nat. size and x6¥% ; after Binney. 
Figure 70.—Suceinea barbadensis, two recent specimens, x2; from photog. by 
A. H. V. All from recent specimens. 
Pupoides marginatus (Say). Ficure 69. 
Pupa marginata Say. 
Pupoides marginatus Pilsbry, these Trans., x, p. 498, 1890, pl. lxii, fig. 16. 
Verrill, op. cit., p. 729, fig. 738. 
This species, which is still living in Bermuda, was found by Mr. 
Gulick at station 809 (one specimen). 
It has not. been found in the older rocks. 
Carychium bermudense Gulick. Seep. 171. Ficure 54, a, b. 
This minute, slender extinct species was found in the sand-pits at 
stations 808, 809 by Mr. Gulick, as well as in the older formations. 
Succinea somersensis Ver. See p. 171. 
This species was found by us in the fine, hard, marine limestones 
near Hungry Bay, associated with foraminifera and marine shells. 
Mr. Gulick found a Succinea (recorded by him as the living form 
(S. bermudensis) in the Paget sands at his stations 808 and 809, 
which may have been the same as the older and larger species or 
variety. The existing species is figured here for comparison (figure 
70). 
