﻿6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 59 



DRYMiEUS BEYERLEANUS Hupe 



Bulimus beyerleanus Hupe, in Castelnau, Anim. Nouv. Am. du Sud. p. 50, 



pi. 6, f. 6, 1857. 

 Drymceus beyerleanus Pilsbry, Man. Conch., vol. II, p. 197, pi. 38, f. 4, 5, 



May, 1898. 



Under rocks at Lucma, Peru, 7000 feet elevation, also three leagues 

 above Santa Ana, Eastern Peru, Yale Expedition, 3500 feet elevation. 



While this may be, as claimed by some naturalists, a mutation of 

 B. zoographicus Orb., it is the exact type which Hupe named beyer- 

 leanus. U. S. N. Mus., No. 250258. 



D. BEYERLEANUS var. MITCHELLI Dall, nov. 1 



With the preceding, but, so far as the collections show, without 

 intergradations. 



Shell somewhat more slender than beyerleanus, with the same num- 

 ber of whorls ; the peristome less reflected, the pillar more slender and 

 slightly gyrate. Color of pinkish buff, disposed in alternating darker 

 and paler axial streaks. Interior* of the aperture pale lilac. Height, 

 41.0; aperture, 20.0; maximum diameter, 15.0 mm. U. S. N. Mus., 

 No. 250260. 



BULIMULUS TYLERI Dall, n. n. 2 



Bulimus simplex Hupe, Castelnau, Nouv. Anim. Am. du Sud. p. 53, pi. 9, f. 6, 

 1857, not of Jonas, P. Z. S. 1842, p. 189. 



Above Santa Ana, opposite Chinche, Peru, at 3500 feet elevation. 

 U. S. N. Mus., No. 250261. 



Two specimens agreeing with Hupe's figure and description were 

 collected as above, thus confirming the habitat given by him, which 

 had been questioned. 



Subgenus ATAXUS Albers 



Ataxus Albers, Die Heliceen, p. 164, 1850. Type Bulimus umbilicaris 

 Souleyet. 



Owing to the kindness of Dr. H. A. Pilsbry of the Academy of 

 Natural Sciences, Philadelphia, I have been able to examine a speci- 

 men of the type of the subgenus, which is notable for its deep tubular 

 umbilicus extending to the apical part of the shell and bordered by a 

 blunt carina on the base of the shell. On opening the specimen so as 

 to expose the interior of the whorls, the axis is seen to be very 



1 Named in honor of Alfreda Mitchell at the request of Dr. Bingham. 



2 Named in honor of Mr. Victor Tyler at the request of Dr. Bingham. 



