A, E. Verrill—The Bermuda Islands; Geology. 165 
of the shell, and shows all the whorls. The whorls of the spire are 
somewhat convex, the apical one smooth; the body-whorl is rounded 
when adult. The shell is usually flammulated with chestnut-brown in 
recent specimens and some of the fossils show the same colors. 
There is no internal lamella. The fossil shells are usually somewhat 
larger than the recent ones. As a living species it is not abundant. 
Occurs not infrequently at the quarries of hard limestone near the 
shores of Castle Harbor with P. Nelson, and elsewhere, but usually 
in the form or var. antiguus. Gulick obtained his best specimens at 
locality 815, near Harrington House. It also occurs in the Devon- 
shire and Paget formations. 
Variety Goodei Pilsb. 
Pilsbry, Proc. Acad. N. Sci., Philad., 1889, p. 85, pl. iii, figs. 12, 13; these 
Trans., x, p. 500; Gulick, op. cit., p. 419. ; 
This living variety was distinguished merely on account of its 
nearly flat spire and larger umbilicus. Diameter, 9-10™™; height, 
3.25—4™™, 
It is reported by Mr. Gulick as found fossil at Town Hill (his 
station 819). 
Variety antiquus, nov. 
PuaTs XXVI, FIGURE 3. 
A single specimen of a peculiar form of Pecilozonites was found 
imbedded in the stalagmitic mass of P. Nelson figured on pl. xxv, 
(see also fig. 45). 
If it be not somewhat abnormal, it may represent a new species, 
in some ways intermediate between P. Reinianus and P. circum- 
Jirmatus, var. discrepans. It has rather the form of the first (var. 
Goodei), but it apparently had a faint internal ridge in the last 
whorl, unless due to injury during life. 
The spire is almost flat, composed of about seven somewhat con- 
vex whorls, separated by impressed sutures. Surface rather strongly 
costulate; on the last whorl the costulz are interrupted a little above 
the periphery by a slight groove. The solid stalagmitic cast of the 
interior shows, in spots where the shell is broken away, a very slight 
peripheral groove, as if there had been a very thin internal ridge, 
corresponding to the external groove. Probably this may have been 
produced by an injury during the growth of the shell. The basal 
side of the shell is wholly concealed. The last whorl is well rounded, 
