162 A. EF. Verrill— The Bermuda Islands; Geology. 
Peecilozonites Nelsoni, var. callosus Gulick. 
A. Gulick, The Fossil Land Shells of Bermuda, Proc. Acad. Nat. Sei., Philad., 
1904, p. 414, pl. xxxvi, fig. 5. P. Nelsoni (pars), Pilsbry, Proc. Acad. Nat. 
Sci., Philad., 1888, p. 290, pl. xvii, fig. K ; reprint in Heilprin, ‘‘ The Ber- 
muda Islands,” p. 197, pl. 16, fig. K. 
Puate XXVI, FicuRES 5, 6. ALSO TEXT-FIGURE 47, TYPE. 
Several good examples of this variety, in excellent preservation, 
belonging to the American Museum, New York, were lent to me 
for figuring by Mr. R. P. Whitfield. They were collected by him 
at Bailey Bay, in a road-side cutting and in cavernous places in the 
hills west of Mr. Seon’s house. I personally collected similar speci- 
mens, but not as perfect, in the same vicinity. I also found the same 
variety in a ledge below low-water mark at Bailey Bay Island, and 
in a road-cut near Castle Harbor. Mr. Gulick’s specimens were 
46 47 
Figure 46.—Pecilozonites Nelsoni, var. Nelsoni. 
Figure 47.—P. Nelsoni, var. callosus, type. Both about natural size, copied from 
Gulick. 
from Knapton Hill and Tucker’s Town. Specimens of the same 
kind were sent to me thirty years ago by J. M. Jones. Some of the 
figures of P. Nelsoni published by Mr. Pilsbry in Heilprin’s Ber- 
muda Islands, pl. 16, reprinted from Proc. Philad. Acad. for 1888, 
p- 290, pl. xvii, also represent this variety. 
Mr. Gulick states that this variety is smaller than the ordinary 
form, but some of our specimens are much larger than his and 
exceed the diameter of his largest examples of the ordinary form, 
so that the size cannot be used as a varietal character. Its depressed 
form, thicker shell, the thickened outer lip, and thick callus of the 
inner lip are the only notable distinctions, but all these are variable 
characters in this species. 
The following description of the larger Bailey Bay specimens was 
prepared several years ago, when I had also given it a varietal name 
in MSS. 
