1904. ] NATURAL SCIENCES OF PHILADELPHIA. 425 
REFERENCE TO PLATE XXXVI. 
Figures 2 to 5 are natural size; the others are variously enlarged. 
PLATE XXXVI Fig. 1.—Pecilozonites dalli. 
Fig. 2.—Pecilozonites cupula. Locality 806. 
Fig. 3.—Pecilozonites bermudensis zonatus. Locality 808. 
Fig. 4.—Pecilozonites nelsoni form discoides. Locality 806. 
Fig. 5.—Pecilozonites nelsoni callosus. Locality 818. 
Fig. 6.—Vertigo numellata. Locality 806. 
Fig. 7.—Vertigo marki. Locality 806. 
Fig. 8.—Euconulus turbinatus. Section from compact rock, locality 814. 
Fig. 9.—Euconulus turbinatus. Locality 806. 
Fig. 10.— Euconulus turbinatus. Locality 808. 
Figs. 11, 12.—Carychium bermudense. Locality 806. 
Fig. 13.—Zonitoides bristoli. Locality 818. 
