114 THE NAUTILUS. 



formed the degree of Pli. D. was bestowed upon him by Columbia 

 College of New York City. 



Among his published articles is a monograph on the Terrestrial 

 Mollusca of his native county. He was a most careful and pains- 

 taking worker in his chosen field, and was an acknowledged authority 

 among his peers. The doctor was a most delightful companion, and 

 the many hours he spent in my family are remembered and cherished 

 with keenest pleasure. To that noble band of pioneers in conchol- 

 ogical study and labors in the United States (of whom, alas, so few 

 survive) we offer our most grateful thanks, and to the departed 

 write, Rcquiescat in pace. A. B. KENDIG. 



Brookline, Mass., Dec. 19, 1899. 



NEW SPECIES AND SUBSPECIES OF AMERICAN LAND SNAILS. 



BY HENRY A. PILSBRY. 



Pyramidula alternata rarlnotata n. v. 



Similar to the typical form in size, form and sculpture, but very 

 sparsely marked with comparatively small chestnut spots on a pale 

 brownish-corneous or dirty buff ground ; streaks on the base nearly 

 obsolete. 



Caldwell, Fayette and Jackson counties, Texas. 



Mr. Bryant Walker call-'d my attention to this form, sending spe- 

 cimens from Caldwell and Fayette counties, collected by Mr. J. A. 

 Singley ; and 1 find in the collection of the Academy some speci- 

 mens sent me by Hon. J. D. Mitchell, from the Navidad River bot- 

 tom, Jackson co. 



Zonitoides neomexicanus Cockerell & Kilsbry, n. sp. 



Shell minute, depressed, in form similar to Zonitoides minus culus ; 

 whitish corneous, somewhat translucent, fragile, the umbilicus wide, 

 its width contained 2^ times in the greatest diameter of the shell. 

 Surface marked with very fine but rather sharp growth stria?., and 

 crowded, microscopic spirals throughout, the spirals conspicuous to 

 the apex. Whorls 3|, quite convex, the last everywhere well 

 rounded. Aperture round-lunate, the penultimate whorl excising 

 about one fourth the circumference of the peristome ; lip thin and 

 acute, a little dilated at the columellar margin. 



