10 THE UNIVERSITY SCIENCE BULLETIN. 



siderable variation in this respect so that it would not seem to 

 be justifiable to consider them distinct on this character when 

 otherwise all which have been seen agree with the description 

 and figures. Unfortunately the formation of the aperture in 

 the species cannot be determined. 



Epivhragmophora antecedens Stearns. 



Helix (Aglaia) ficUHs Gray. Stearns (in White) Bui. 18, U. S. G. S., p. 14, pi. 

 Ill, figs. 1-3, 1885. 



Epiphragmophora fidelis antecedens Stearns, Proc. Wash. Acad. Sci., vol. II, p. 653, 

 pi. XXXV, figs. 1-3, 1900. 



Epiphragmophora fidelis antecedens Stearns, Science, new series, vol. XV, p. 153, 

 1902. 



Epiphragmophora fidelis antecedens Stearns, Univ. of Calif. Pub. Geol., vol. V, p. 67, 

 1906. 



Four specimens which clearly belong to this species were found. One 

 is fully grown. It shows that the umbilicus was normally completely 

 closed and thickened with callus, a condition which does not obtain in 

 E. fidelis. The umbilicus, however, is of the general form found in Ejii- 

 phragmophora and not that which is common in Polygyra. The best 

 specimen Stearns had was imperforate, but it seemed to have been caused 

 by crushing. This is now known to be normal. 



In order to complete the record the other species of mollusks 

 known from the John Day Miocene will be mentioned. The 

 original generic terms ascribed to them are retained. No ob- 

 ject would seem to be gained by attempting a rearrangement 

 at this time. The full synonomy of Unio condoni White has 

 not been searched for. 



1. Unio condoni White, Bui. 18, U. S. Geol. Surv., p. 13, pi. II, figs. 1-3, 1885. 



2. LimncBa maxima Stearns, Science, new series, vol. XV, p. 154, 1902. 

 Liinnaa maxima Stearns, Univ. of Calif. Pub. Geol., vol. V, p. 70, fig. 1, 1906. 

 LimncBa stearnsi Hannibal (in Baker) Limnceidoe of N. and Mid. Am., p. 102, pi. 



XVII, fig. 11, 1911. New name for L. maxima above, preoccupied by Collin, 

 Ann. Soc. Mai. Belg., VII, p. 94, 1872. 



3. Helix (Zonites) marginicola Conrad, Am. Jour. Conch., vol. VI, p. 315, pi. XIII, 



fig. 9, 1870. Bridge creek, Oregon. Condon, Coll. 

 Helix (Zonites) marginicola White, 3d Ann. Rep. U. S. Geol. Surv., p. 453, pi 

 32, fi|. 34, 1880-'81. 



4. Helix (Patula) perspectiva Say. Stearns, Bui. 18, U. S. Geol. Surv., p. 14, pi. 



Ill, fig. 7, 1885. 

 Pyramidula perspectiva simillima Stearns, Proc. Wash. Acad. Sci., vol. II, p. 657, 



pi. XXXV, fig. 7, 1900. 

 Pyramidula perspectiva simillima Stearns, Science, new series, vol. XV, p. 153, 



1902. 

 Pyramidula perspectiva simillima Stearns, Univ. of Calif. Pub. Geol., vol. V, p. 67, 



1906. 



5. Pyramidula lecontei Stearns, Science, new series, vol. XV, p. 154, 1902. 

 Pyramidula lecontei Stearns, Univ. of Calif. Pub. Geol., vol. V, p. 68, fig. 2, 1906. 



The reader is referred to a paper by Harold Hannibal (A 



Synopsis of the Recent and Tertiary Mollusca of the Call- 



