Chronological List of Publications xxxiii 



1931 



293. Description of a new variety of Valvata Icwidi Cm-rier. Nautilus, 44(4) :119-121. 



294. Additional notes on animal life associated with the mound builders of Illinois. 



Trans. Illinois Acad. Sci., 33:231-235. 



295. A re-studv of the interglacial moUuscan fauna of Toronto, Canada. Op. cit., 33: 



358-366. 



296. Ecological relationship of the genus Pomatiop.iin with special reference to Pomon 



tioits/s Inpidaria. Ecology, 12(3) :389-396. 



297. The classification of the large planorboid snails of Europe and America. Proc. 



Zool. Soc. London, 1931 (2):575-592. 



298. Fresh-water Mollusca from central Ontario. (With A. R. Cahn). Ann. Rept., 1929, 



Natl. Mus. Canada, pp. 41-64. 



299. Pulmonate Mollusca peculiar to the Pleistocene period, particularly the loess 



deposits. Jour. Paleontol., 5(3) :270-292. 



300. Plei.stocene historv of the terrestrial Mollusca of Fulton Countv, Illinois. Trans. 



Illinois State Acad. Sci., 24(2) : 149-155. 



1932 



301. Stognicola apicina and Stagnicola walkeriann. Nautilus, 45:139-140. 



302. Molluscan shells from Etowah Mounds. Chapter V, in W. K. Moorehead's 'Ex- 



ploration of the Etowah Site in Georgia.' Department of Archeology, Phillips 

 Academy, Andover, Massachusetts, pp. 145-149. 



303. The ecology of Say's Limnaeus elodes. Ecology, 13:286-289. 



304. New species and varieties of Helisoma and Gyraulus from Canada. Nautilus, 



46(1) :6-9. 



305. A new race of Pohjgyra apprcssa from Illinois. Op. cit., 46(2) :48-49. 



1933 



306. Pohjgijru dorfcuilliann and Bulhuoides dcalbatus in Illinois. Op. cit., 47:4-7. 



307. A new Stagnicola from Montana. (With Junius Henderson). Op. cit., 47:30-32. 



308. Self fertilization and nidification in Physa halei. Op. cit., 47:35. 



309. Studies on the bottom fauna of fresh-water lakes. Science, 78:190-191. 



310. The genitalia of the Indian mollusk, Indoplanorbis exustus. Jour. Morphol., 



55(1):1-13. 



311. A new form of Polygyra tridentnta from Illinois. Nautilus, 47(2) :59. 



312. New species of Lvmnaeidae from British America. Jour. Washington Acad. Sci., 



23(11) :520-523." 



1934 



313. Description of a new species of Gyraulus. Canadian Field-Nat., 48-27. 



314. The variation and distribution, recent and fossil, of the snail Polygyra profunda, 



in Illinois. Amer. Midi. Nat., 15(2) : 178-186. 



315. The variation and distribution, recent and fossil, of the snail Polygyra profunda, 



in Illinois. (Abstract). Trans. Illinois State Acad. Sci., 25:189. 



316. New Canadian Lymnaeas. Canadian Field-Nat., 48:69-70. 



317. Two new races and a new species of Helisoma from California. Nautilus, 47: 



140-142. 



318. The molluscan fauna of the great river valleys of Illinois. Trans. Illinois State 



Acad. Sci., 26:129. 



319. New Lymnaeidae from the United States and Canada: 1. California, Oregon, 



and other western states. Nautilus, 48(l):17-20. 



320. A new mammoth record for Illinois. Science (n.s.), 80:118. 



321. A new species of Gyraulus from Canada. Canadian Field-Nat., 48:135. 



1935 



322. Mollusca from Turkey Run State Park. Indiana. Nautilus. 48(3) : 105-106. 



323. Land and fresh-water molluscs from North Star Lake and vicinitv, Itasca County, 



Minnesota. Amer. Midi. Nat., 16(3) :257-272. 



324. Stratiographic sequence of mollu.scan fo.ssils in loess deposits. (Abstract). Proc. 



^ Geol. Soc. Amer. for 1934:372-373. 



325. New species and races of Lvmnaeidae from Newfoundland. (With Stanlev T. 



Brooks). Nautilus. 49:10-13. 



326. The generic po.sition of Planorbi.<> iimhilicatellu^ with the description of a new 



group of Planorbidae. Op. cit., 49(2) :46-48. 



327. Stagnicola elrodiana, new name for Limnaea montana Elrod. Op. cit., 49:60. 



