﻿I92 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 47 



apex. The type and several additional specimens (No. 174,934, U. 

 S. Nat. Museum) were collected by Messrs. Nelson and Goldman 

 in the mountains near Lake Santa Maria, Chihuahua, Mexico. The 

 type measures : maj. lat. 25.5 mm., min. lat. 20.3 mm., alt. 13.4 mm. ; 

 aperture: maj. lat. 12.8 mm., alt. 11.1 mm.; umbilicus about 4 mm. 

 Sonorella nelsoni resembles S. hachitana in general shape, but is 

 more depressed and has a much larger aperture, in which latter re- 

 spect it approaches 5". ashmuni. 



SONORELLA GOLDMANI new species 

 (Plate XXXII, figure 6) 

 Shell decidedly elevated, with the last whorl very much deflected. 

 General coloration : light isabelline above, white below, with a mod- 

 erately broad, light-chestnut band, bordered by a lighter zone on each 

 side, encircling the whorls a little above the periphery. This band 

 is completely exposed above the suture on all the ephebic whorls. 

 The nepionic stage is extremely small, embracing less than one-fourth 

 of a turn, and it appears almost smooth. The neanic stage consists 

 of one and one-half volutions bearing the characteristic sculpture of 

 the group, but very feebly developed. The ephebic stage embraces 

 three and three-fourths well rounded whorls, the summit of each of 

 which falls a little below the dark band. This is particularly true 

 of the last two and one-half volutions where the light-colored zone 

 below the dark band is exposed. The periphery and the base are 

 well rounded ; the latter is of about the same convexity as the space 

 between the sutures. The entire ephebic portion is marked by in- 

 cremental lines only. The whole last whorl is deflected, but more 

 rapidlv at the aperture, which is small, expanded, and slightly re- 

 flected ; columella expanded at base and reflected, its margin scarcely 

 encroaching upon the umbilicus; parietal wall covered by a rather 

 strong callus; umbilicus open to the summit. The type (No. 174- 

 9^3, I'. S. Nat. Museum) and another specimen were collected by 

 Messrs. Nelson and Goldman in the mountains near Lake Santa 

 Maria. Chihuahua, northern Mexico. The type measures: maj. lat. 

 22.5 mm., min. lat. 10.4 mm., alt. 14.0 mm.: aperture: maj. lat. 11 

 mm., alt. 9.4 mm.; umbilicus about 3 mm. 



Sonorella goldmani differs from all the other species in its propor- 

 tionately greater elevation and its much deflected last whorl. 



SONORELLA MERRILLI new species 

 (Plate XXXII, figure 5) 

 Epiphragmophora hachitana (in pari) Dall, Proc. U. S. Nat. Museum, 

 vol. xix. p. 340, 1896. 



