﻿I9§ SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 47 



Sonorella lohri Pilsbry, Proc. Acad. Nat. Sci. Phil'a, 1900, p. 560, 1901. 

 Sonorella lohri Pilsbry. Nautilus, vol. xvi. p. 32. 1902. 



Our specimens of this species are either bleached or badly worn ; 

 a single individual only is fairly perfect, the neanic whorls of which 

 indicate that it probably belongs to this group. The very strongly 

 expanded and reflected aperture forms a quite strong peristome which 

 readilv distinguishes this species from all the other Sonorellas. All 

 our specimens are from Lower California. One measures: maj. lat. 

 21.4 mm., min. lat. 16.4 mm., alt. 8.8 mm.: aperture: maj. lat. 11.6 

 mm., alt. 10.6 min. : umbilicus about 4.4 mm. 



SONORELLA LOHRII LIODERMA Pilsbry 

 Sonorella lohrii lioderma Pilsbry, Nautilus, vol. win. p. 59, 1904. 

 The shell is similar to lohrii, but the last whorl is a little more con- 

 vex and evenly rounded, and the last two whorls are glossy, with no 

 granulation, being marked with faint growth-striae only. The spire 

 is sometimes a little more elevated than the type of S. lohrii. 



Near Moleje, Lower California, cotypes No. 58,107 and No. 88,- 

 367, A. N. S. P., the latter from Lower California without special 

 locality. 



The type specimen of S\ lohrii Gabb is finely granulated through- 

 out. 



[The above description came to hand while this paper was going 

 through press.] 



Sedis ixckkt.e 



SONORELLA ARIZONENSIS (Dall) 



(Plate XXXIII. figure 6) 

 Epiphragmophora arisonensis Dall, Proc. U. S. Nat. Mus., vol. xvm, 



pp. 1-2, 1895. 



Epiphragmophora arisonensis Dall, Proc. U. S. Nat. Mus.. vol. xix, pp. 



337-339, PL xxxi, figs. 11, 12, 1896. 

 Epiphragmophora arisonensis Pilsbry and Johnson, Nautilus, vol. xi. 



p. 59, 1S97. 

 Sonorella arisonensis Pilsbry, Proc. Acad. Nat. Sci. Phil'a, 1900, p. 560, 

 1901. 

 The type of Sonorella arisonensis Dall was collected by Major E. 

 A. Alearns, U. S. A., at Santa Cruz river, Tucson, Arizona. It 

 measures: maj. lat. 17.2 mm., min. lat. 14.1 mm., alt. 11.3 mm.; aper- 

 ture: maj. lat. 9.5 nun., alt. 8.6 mm.; umbilicus about 1.7 mm. The 

 nuclear whorls of the type and only specimen (No. 130,002, U. S. 

 Nat. .Museum) are too much worn to enable a determination of the 

 proper systematic position of this species in the genu-. 



