ADDITIONS AND CORRECTIONS. 



CHONDRINA ARAGONICA (Fagot). P. 54. P. soli us (p. 51) 

 is a form of this according to the authors mentioned above 

 (op. cit., p. 97). 



VERTIGO ALABAMENSIS CONECUHENSIS, p. 80. The authority, 

 ' 'lapp, should be substituted for "n. subsp." 



VKRTIGO OVATA Say. P. 82. 



This species occurs also in the southeastern U. 8. Virginia, 

 western North Carolina, Georgia and Florida (Sterki collec- 

 tion) ; Florida at Snapper Creek hammock, Bade Co., Lower 

 Mataum.be Key and Madeira hammock near the end of the 

 peninsula (Geo. H. Clapp coll.). 



VERTIGO VENTRICOSA. P. 94. 



Dr. Sterki writes: "I believe that V. ventricosa is closely 

 allied to V. ovoto, not to V. pygmtca. I have repeatedly had 

 forms in doubt between the two. Both have essentially the 

 same formation of the palate, and there are small ovata with 

 a slight palatal callus, occasionally no infraparietal and a 

 barely vestigeal angular lamella."' 



VERTIGO HEBARDI Van. P. 103. 



Additional localities are: Elliott's, Pumpkin, Lignum Vitae, 

 No Name, Big Pine and Little Palo Alto keys, off south and 

 southeastern Florida, Geo. H. Clapp collection. 



VERTIGO CONCINNULA Ckll. P. 121. 



The shells illustrated in fig. 1 are from Willow Creek, 

 Mogollon Mts., New Mexico ; x 15. 



VERTIGO MODESTA (pp. 123-134). 



On p. 134 a race of V. modesta from near Bluff Lake in the 

 San Bernardino Mts., California, was discussed. It was fig- 

 ured on p. 124, figs. 8, 8a, 86. Without locality it would not 

 be possible to separate some specimens from V. m. castanea, 

 while others would be as near V. >n. pari-etalis. These ex- 



