200 eobeet h. wolcott: 



specimens of Unionidee, representing a large number of locali- 

 ties and 39 species. 



Through the kindness of Mr. R. H. Johnson of Harvard 

 University the material obtained from the following mussels 

 has been received for examination: 



Angust, 1897, from Lake Chautauqua, New York, 150 

 specimens of TJ. phaseolus Hild. , TJ. gibbosus, TJ. luteolus, A. 

 edentula and A. plamXh. 



August, 1897, from Cayuga Creek, Cheektowaga, Erie 

 county, N. Y., a number of TJ. occidens. 



To Prof. H. M. Kelly of Cornell College, Mt. Yernon, Iowa, 

 the author is indebted for the data and mites obtained from 

 the examination of the following large number of mussels, col- 

 lected during the years 1896 and 1897: 



From the Illinois River and bayous and lakes near Havana, 

 Ills., 731 specimens of TJ. alatm, TJ. asperrimus Lea, TJ. a/hfr- 

 dontoides, TJ. cormdus Barnes, TJ. donaeiformis Ttea, TJ. ebenus 

 Lea, TJ. ellipsis Lea, V. graniferus Lea, TJ. elegans Lea, TJ. 

 gibbosus, TJ. I/igginsii Lea, U. gracilds, TJ. laevissimus Lea, 

 TJ. ligniiK -at in us, U. hitiohis, TJ. lachryynosus, TJ. metanever, 

 Raf. , TJ. iiniltijiliciitiis Lea, TJ. parvus, TJ. pustulatus Lea, 

 TJ. jHistiilnstis, TJ. ruh!gi)iosH$, TJ. pUcatus, TJ. securis Lea, 

 TJ. tenuisswvus Lea, TJ. trigomtsliea,, TJ. rectus, TJ. tuherculatus 

 Raf., TJ. vi-ntricosi/s, M. rugosa, M. marginata, M. confragosa 

 Say, M. complcmata, A. imbecilis, A. plana, A. suborbiculata 

 Say, A. edentula and A. corpulenta Coop. 



From the Spoon River at Bernadotte and Duncan's Mills, 

 Ills., 191 specimens including the greater number of the above 

 species. 



From Abbey Creek and Cedar River, Mt. Yernon, Iowa, 

 486 specimens, including also the majority of the same species. 



From the Susquehanna River at Lewisburgh and Sunbury, 

 Pa. , and the Schuylkill River and French Creek near Phoenix- 

 ville, Pa., 202 specimens of A. edentula, M. undulata, M. 

 marginata, TJ. complanatus Sol., TJ. Keterodon Lea, TJ. 

 nasutus, TJ. ochraceus Say and TJ. tappaniamcs Lea. 



