A. E. Verrill—The Bermuda Islands; Geology. 163 
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Shell large and thick, with a rather low spire, the height usually 
less than two-thirds of the breadth. Base strongly convex. Umbili- 
cus variable, but usually small and deep, and often partly covered 
by the slightly reflexed, angular edge of the lip. Body whorl 
obtusely angulated or obsoletely subcarinate. Sutures impressed, 
sometimes slightly canaliculate. Whorls 8 to 9. Spire sometimes 
much depressed, with an even slope, due to the flattened upper 
whorls, in other cases broad, conical, with the upper whorls a little 
more rounded. 
The sculpture consists of numerous, very oblique and usually well- 
marked costule, parallel with the lines of growth ; sometimes they 
are strongly developed and rather coarse, especially on the upper 
side of the body-whorl. Aperture somewhat irregular, transversely 
oblong-ovate, the outer end rounded, the basal side flattened, and 
the columellar end subtruncate, with a slight, excurved sinus, both at 
the basal angle and at the umbilical angle. The inner lip, in the 
older shells, is often much thickened, with a thick white callus; the 
thickening also affects the columella and outer part of the lip in 
most cases. 
Color, when preserved, pale yellowish brown with a wide band of 
orange-brown, both above and below the periphery of the body- 
whorl, and sometimes with a narrower subsutural band of the same 
color. In some cases the upper surface is also flammulated with 
reddish brown. 
Diameter of the largest specimen, 45™™; height, 23™™. Another 
has the diameter, 31™™; height, 28™™; length of aperture, 14™™; its 
breadth, 7™™. In Mr. Gulick’s type the diameter was 33™™; height 
7 ean 
Peecilozonites Nelsoni, var. conoides Verrill, nov. 
Figure 45. Puate XXV, Types. Puate XXVI, FIGURE 4, TYPE. 
This name is now proposed for the high-spired or conical form of 
this species, in which the height is from two-thirds to nine-tenths 
the diameter of the shell, or sometimes even equal to it. 
It was figured by Pilsbry in Heilprin’s “The Bermuda Islands,” 
PloLG.. Ji 
It is the most common form of the species in many places in the 
vicinity of Castle Harbor, and was considered the typical form by 
Mr. Gulick. But Mr. Bland’s original description, as stated above, 
applies only to the depressed form. The surface in many of the 
