. The Conchologists' exchange. Mollusks. 26 THE NAUTILUS. Shell figured (Knox Co.,) , whorls 5, 23 grooves on body whorl. Largest, Knox Co., , whorls 5, 26 grooves on body whorl. Largest, Knoxville, , whorls 5, 34 grooves on body whorl. Smallest, Knox Co., , whorls 3, umbilicus completely covered. The largest shell seen is from ''along Coosa River, 2 miles N. of Wetumpka, Ala.," it is whorls 5|, 28 grooves on body whorl. Types from a lot of over 400 shells collected by the late Mrs. George Andrews and labeled "Kno
. The Conchologists' exchange. Mollusks. 26 THE NAUTILUS. Shell figured (Knox Co.,) , whorls 5, 23 grooves on body whorl. Largest, Knox Co., , whorls 5, 26 grooves on body whorl. Largest, Knoxville, , whorls 5, 34 grooves on body whorl. Smallest, Knox Co., , whorls 3, umbilicus completely covered. The largest shell seen is from ''along Coosa River, 2 miles N. of Wetumpka, Ala.," it is whorls 5|, 28 grooves on body whorl. Types from a lot of over 400 shells collected by the late Mrs. George Andrews and labeled "Knox Co., ; A lot of 18 shells in her cabinet series are labeled "Knoxville, ; : they all probably came from near Knoxville, perhaps from a favorite '' hunting ground '' of hers, '' The Cliffs '' on the south side of the river. Type No. 7365 of my collection. Cotypes in Acad. Nat. Sci. Phila. (No. 112421), U. S. Nat. Mus., and collection of Dr. Bryant Walker. At first I was inclined to consider this a variety of V. caroli- nensis, but the flatter spire, the umbilicus covered at all stages oj groivth, the less excavated umbilical region and the wider aper- ture indicate a good species. I examined 250 V. indentata from 41 localities and 110 carolinensis and var. wetherbyi from 15 lo- calities and found no intermediates. In addition to the Knox Co. shells I have cryptomphala from 14 localities in Alabama, San Antonio, Tex., McComb City, Miss., Fayetteville, Tenn., and Albion, 111., nearly 600 shells in all. A sectioned shell shows the thickening of the columella, caused by the callus, clear to the Fig. 1.—ViTBEA Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Averell, William D. Philadelphia, Wm. D. Averell
Size: 3092px × 808px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectmollusks, bookyear188
