744 NOTES ON NORTH AMERICAN SHELLS STEARNS. 



Faiiiilv IJALVCID.E. 

 Genus 20NITES Montfort. 



Zonites laevigatus I'feirt'er. 



Three examples. 



Wasliiniitou, Miss., ''in the woods,'" Venioii Bailey, May, 1 892. Binney, 

 ill his useful "Manual of AiiuM-ieaii IjaxuI Sliells,'' says of this spe- 

 cies, "I have received specimeus from Pennsylvania to Arkansas, 

 from Illinois to St. Augustine, Fla., and Mobile. It attains its 

 greatest development in the Cumberland subregion." 



Family I'HILOMYC'ILU:. 

 Geuus TEBENNOPHORUS ISinuey. 

 Tebennophorus caiolinensis Bosc. 



One si)ecimen. 



Stone County, Mo., near Marble Cave; Vernon Bailey. 



This large and distinctly characterized slug occurs as far north as 

 "Canada, and as far to the south as Texas and Florida." (Binney.) 



1 have collected numerous examples among the bricks, rnins of an 

 old building near the historic Burns residence at the foot of Seven- 

 teenth street, Washington, and it is apparently quite common at many 

 places in the District of Columbia, and i)resuniably in the surrounding 

 country. 



Fiiuiily HKLKJIDyE. 



(ieuus PATULA ll.-ld. 

 Section A.NiiHISPlKxV Morsn. 



Helix (Patula) alteruata Say. 



One dead S])ecimeu. 



Washington, Miss,, Vernon Bailey. 



Th(^ solitary example obtained here was not quite mature. Thevari- 

 aticm exhibited l)y this species makes it an exceedingly interesting 

 form to the student. While limited in this res])ect when compared 

 with the ju'otean sfrhjoHU^ nevertheless it includes cnmherlandiana., 

 Fcri/iisoiii, and morda.v, as heretofore indicated,* and as proven by the 

 ample series in the National jNTuseum, whicih exhibits a direct gradation 

 of intermediate and blending varieties. Mr. Pilsbryt in this connec- 

 tion s]>eaks of '•alteruata, including also mordax and cumherlaudiana 

 (which ,ire hardly more than extreme forms of alt<nutta),''' qXv. 



"This pretty and variable .species ranges from Labrador to Texas 

 throughout the eastern United States, and is found in the i)ostplio- 

 (Ciie of the Mississii»])i N'alh'y, retaining some (»t' tlie <'olor of the 

 red Hame-like patches.'' (IJinncy,) 



" Prof. V. S. Nat. Miisciiin, vol. \iv, 1891. p. 90. 

 t Manual of Coucliolony, vol. \ iii. \\. 11."). 



