THE NAUTILUS. 31 



SHELLS OF ORLANDO, FLORIDA. The following notes are from 

 a letter received from Mr. C. H. Baker (July 21, 1915) of 

 Orlando, Florida. As this is all the shells he could find in 

 several years collecting near Orlando and Zellwood, Florida, it 

 was thought advisable to put them on record. 



In the original description of Praticolella bakeri Van., an A. 

 was printed in Mr. Baker's name in place of an H. by mistake. 



Specimens taken were mostly along shores of some large con- 

 nected lakes or head of Ocklawaha R. 



Praticolella bakeri Van. Proc. Acad. Nat. Sci., Philada., 1915, 

 p. 196. 



Praticolella jejuna Say. 



Polygyra auriculata Say. Found but once and in one locality, 

 several specimens. Not seen at all for five years or upwards. 



Polygyra uvulifera Shutt. 



Euglandina rosea Fer. No perfect specimens taken, pretty 

 widely distributed but not common, quite elegant. 



Planorbis duryi Weth. Frequent, and well distributed. 



Planorbis scalaris Jay. Frequent, varying almost to the pre- 

 ceding. 



Ampullaria depressa Say. Relatively large, handsome species, 

 varying a good deal in coloring, common. 



Viviparus waltoni Try. Our most abundant species, seldom 

 found in original " mint" condition, varying much in coloring, 

 somewhat handsome. Large mounds exist composed almost 

 entirely of this shell (sepulchral mounds along inland water- 

 ways). 



Gillia wetherbyi Dall. Quite rare, took but 1. 



Unio buckleyi Lea. Quite generally distributed. 



Anodonta gibbosa Say. Also common. E. G. VANATTA. 



PUBLICATIONS RECEIVED. 



ON THE RELATIONS OF THE SECTIONAL GROUPS OF BuLIMULUS OF 



THE SUBGENUS NAESIOTUS ALBERg. By William Healey Dall 

 (Journ. Wash. Acad. Sci. X, No. 5, March 4, 1920). By cut- 

 ting sections various differences in the axis were found, simple, 



