. Bulletin of the Department of Geology. Geology. Vol. 5] Steams.—John Day and Mascall Mollusca. 69 regularity of the ribs make this a very pretty shell. The general facies suggests relationship with the extraordinary group of heli- coid forms so widely distributed throughout the vast area denomi- nated by Mr. W. G. Binney,3 the "Central Province," and listed by Dr. Pilsbury in his recent catalogue as number 3404 (P. stri- gosa and numerous races or varieties). A comparison of J'. Le. 2 4 Fig. 1. Limnaea maxima nom. prov. Natural size. Fig. 2. Pyramidula Le Contei, n. s. X 1|. Figs.
. Bulletin of the Department of Geology. Geology. Vol. 5] Steams.—John Day and Mascall Mollusca. 69 regularity of the ribs make this a very pretty shell. The general facies suggests relationship with the extraordinary group of heli- coid forms so widely distributed throughout the vast area denomi- nated by Mr. W. G. Binney,3 the "Central Province," and listed by Dr. Pilsbury in his recent catalogue as number 3404 (P. stri- gosa and numerous races or varieties). A comparison of J'. Le. 2 4 Fig. 1. Limnaea maxima nom. prov. Natural size. Fig. 2. Pyramidula Le Contei, n. s. X 1|. Figs. 3 and 4. Helix (Epiphragmorphora?) dubiosa nom. prov. Natural size. Contei kindly made for me by Professor Dall, with the large series of the strigosa group in the National Museum, determines it, as he says, to be "different from anything we have in the col- ; In memory of the late Professor Joseph LeConte, I have at- tached his name to the above form. 3 "Manual of American Land Shells," Bull. 18, U. S. National Museum. 4 "Classified Catalogue of Land Shells of North America," etc. Phila- delphia, April, 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 University of California, Berkeley. Dept. of Geology. Berkeley : The University Press
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