420 PROCEEDINGS OF THE ACADEMY OF [April, 
Pecilozonites circumfirmatus Redf. 
Helix circumfirmata Redfield, Ann. Lye. N. H. of N. Y., VI, p. 16. 
Pecilozonites circumfirmatus ’Pilsbry, Proc. Acad. Nat. Sci. Tide 1888, p. 
291. 
The modern variety comes from both formations at locality 806, 
and from 814 and 808. Those from locality 808 are some of them more 
keeled than is now usual. A series of poor specimens from No. 807 
seem to bridge the gap from these to var. discrepans. 
This species has lost less in size than the others of its genus. My 
largest fossil, coming from locality 808, has alt. 7,diam.12 mm. My 
largest recent shell has alt. 7, diam. 11.5 mm. I think the fossils 
average larger than the adults of the recent shells, but it is not 
easy to eliminate the immature of either. 
Pecilozonites circumfirmatus ve~ discrepans Pir. 
Helix discrepans Pfr., Malak. Bl., 1864, p. 1. 
Localities 807, 818 and two specimens of doubtful identity from 806. 
Some from 818 are extremely flat and carinate, one of them having 
alt. 4.8, diam. 10.5 mm. If this were the only locality that yielded 
the variety it would undoubtedly rank as a distinct species. 
I should like to raise the question whether Pecilozonites discrepans 
is not one of the extinct varieties. I believe it has not been treated 
as such heretofore, but none were found last summer any more recent 
than those from this sand pit. 
Euconulus turbinatus n. sp. Pl. XXXVI, figs. 8, 9, 10. 
Shell acutely conic, with contour very slightly convex; minutely per- 
forate, thin, glistening yellowish-corneous, closely striate, and sculptured 
with microscopic spirals. Apex rounded off abruptly. Whorls 73, 
not convex, narrow, the last strongly angulate at the periphery. 
Suture simple, hardly impressed. Base rather flat, not excavated. 
Aperture almost quadrangular, but with the angle at the columella 
indefinite. Columella slightly curved, the columellar margin narrowly 
reflexed. Alt. 3.4, diam. 2.8 mm. (from locality (807); diam. 3 mm. 
(from locality 808). 
From localities Nos. 807, 806, 814, 816, 808, and 818. 
The above description is a composite. The general form is described 
from the specimen from locality 807, but the sculpture is that of the 
best specimen from 806, which should, perhaps, be considered the type, 
and the base and aperture are taken from the specimen from 808. 
From 814 comes the longitudinal section of one 3.8 x 2.8 mm., with an 
unusually convex contour. 
The genus Huconulus is of course, not boll satisfactory for this 
species. 
