A, EF. Verrill—The Bermuda Islands; Geology. 159 
An important paper on the fossil land shells of Bermuda has 
recently been published by Mr. A. Gulick,* in which he has described 
several new species and has given many details of their occurrence. 
Most of his new species had been collected previously by us, in 1898 
and 1901, but not described. 
The following species have been found in this formation: 
Pcecilozonites Nelsoni (Bland) Pilsbry. 
Hyalina Nelsoni Bland, Annals Lyc. Nat. Hist., N. York, xi, p. 78, 1875 (as a 
variety of H. bermudensis). 
Pecilozonites Nelsoni Pilsbry, Proc. Acad. Nat. Sci., Philad., 1888, p. 290, 
pl. xvii, figs. J. K. L.; in Heilprin’s Bermuda Islands, p. 197, pl. 16, 
figs. J. K. L.; Trans. Conn. Acad., x, p. 500, 1900. Verrill, op. cit., xi, p. 
728; “‘The Bermuda Islands,” p. 316. A. Gulick, Proc. Acad. N. Sci., 
Philad., 1904, p. 415, pl. xxxvi, fig. 4. 
Pachystyla mauritiana in Bartram’s List, Berm, Almanac, 1881, p. 125. 
PuaTE XXV; PuaTeE XXVI, FicuREs 4-8. Aso FicuRES 45, 46, 47. 
This large extinct species is remarkably variable in form. In 
some localities most of the specimens are conical, about as high as 
broad, or even higher, while in other localities the spire is much 
depressed or flattened. The original type of Mr. Bland was the low 
and flattened form to which Mr. A. Gulick has recently given the 
variety name, discoides. (See fig. 46.) But intermediate forms are 
not uncommon. ‘Those specimens that have a large callus on the 
inner lip Mr. Gulick called variety callosus. The amount of callus 
is also inconstant, so that no sharp line can be drawn between these 
varietal forms. They sometimes occur together, but more commonly 
are found at different stations. 
The surface, in all the varieties, is generally ornamented by low, 
oblique, curved ribs, as shown on plate xxv. Many of the specimens 
from some localities retain traces of the original color. It was 
usually yellowish brown, with irregular streaks or blotches of 
reddish brown crossing the whorls, and sometimes with a subsutural 
band and one or two wider peripheral bands of brown, much as in 
some existing specimens of P. bermudensis. 
The mass of specimens figured on plate xxv, and fig. 45, came 
from the Walsingham district, between Harrington Sound and Castle 
Harbor, and near Paynter’s Vale. They are cemented together by a 
* Proc. Acad. Nat. Science, Philad., 1904, pp. 406-425, pl. xxxvi. 
