. The Conchologists' exchange. Mollusks. 58 THE NAUTILUS. that of a family, must stand according to its first spelling, how- ever erroneous. Should it ever come into general favor it would lead to some strange results. The International Code alone must write the "finis" to a discussion of this sort. ON THE OCCURRENCE OF FYRAMIDULA RTJFESTRIS IN MAINE. BY EDWARD 8. MORSE. Forty years ago while collecting land shells alongside the road in Riley, Maine, 17 miles north of Bethel, I found two specimens of a small Helix, which at the time I mistook for a variety of Planogyra astericus, bei
. The Conchologists' exchange. Mollusks. 58 THE NAUTILUS. that of a family, must stand according to its first spelling, how- ever erroneous. Should it ever come into general favor it would lead to some strange results. The International Code alone must write the "finis" to a discussion of this sort. ON THE OCCURRENCE OF FYRAMIDULA RTJFESTRIS IN MAINE. BY EDWARD 8. MORSE. Forty years ago while collecting land shells alongside the road in Riley, Maine, 17 miles north of Bethel, I found two specimens of a small Helix, which at the time I mistook for a variety of Planogyra astericus, being devoid of the elevated rings following the lines of growth; it was apparently the same size, form and color of P. astericus. Instead of being found in an alder swamp in wet ground, a common habitat of P. astericus, it was found in a hard-wood growth on the side of a hill associated with ^S'. lahyrinthica, S. arhorea, 8. exigua and other common species. Under the microscope I found the proportions of the shell different, as the accompany- ing drawings will show. Fig. 1 is the new form; fig. 2 is P. astericus drawn on the same scale. Realizing that the shell was new to this country, if not a new species, and not deem- ing it prudent to describe a new species from two specimens,. Fig. 1 Fig. 2 Fig. 3 I visited the region again in 1891 in company with Major John M. Gould, who was with me the first time. We searched the woods in vain for a specimen of the shell. In August of this year Major Gould again visited the place but could not find the shell. A recent study of European species leads me to regard this nova as the old Helix rupestris of Draparnaud,. 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
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmollusks, bookyear188
