340 MEXICAN BO UN DA It Y SHELLS— BALL. 



peristome depressed ; aperture oblique, with a thickened and somewhat 

 dilated but not reflected lip; pillar lij) l)road near the body, united to 

 the outer lip over the body hy a thin callus; umbilicus moderate, deep, 

 exhibiting- nearly 2 whorls; color of the fresh shell pale reddish purple 

 or livid waxen, paler near the umbilicus, with a single puri^lish brown 

 baud above the periphery, bordering- the. suture below it, with an ill- 

 defined pale band on each side of it somewhat wider than the brown 

 one; the latter is also visible inside the aperture; bleached specimens 

 are waxen white with the brown band more or less faded; major diam- 

 eter of largest shell 2(>.a, minor diameter 21, height 12 mm. An aver- 

 age specimen measures 23.5, 19, 12, and the smallest adult 21, 1G.5, 

 10.5 for the same dimensions. 



Fort ITuachuca, Arizona, A. K. Fisher; Tucson, Arizona, Cox, in Lea 

 collection; below San (Juentin, Lower California, (i. P.Merrill; Doubtful 

 Canyon, Peloncello Mountains, southwest New Mexico, F. H. Fowler 

 in United States National Museum ; and by Dr. JNIearns at the follow- 

 ing localities: Top of Hachita Grande Mountain, altitude 8,270 feet. 

 Grant County, New Mexico ; near Carrizollilo Springs, New Mexico, on 

 the top of two peaks near the boundary line; on Black Mountain, 12 

 miles south of bouiulary monument No. 77, in Northern Mexico; and 

 in the Huachuca Mountains, Arizona, altitude 8,000 to 0,000 feet, by 

 Dr. Mearns and F. X. Holzner. 

 . Type.—J^o. 130004, U.S.N.M. 



In specimens from Tanners Canyon, Huachuca Mountains, the shell 

 was somewhat more depressed and the colors darker than from other 

 localities. 



This seems to be the most abundant of the mountain species, and its 

 dwarfs seem most easilj' distinguished from the E. magdalenensls by their 

 somewhat more inflated and higher form and their reddish tint when 

 fresh. The fully developed specimens which comprise the great majority 

 are very much larger than U. mogdaleiiensis, but bleached and dead 

 dwarf specimens can hardly be distinguished from full grown magda- 

 lenensis in a similar condition. The specimen figured is of the depressed 

 variety from Tanners Canyon, Huachuca Mountains. 



EPIPHRAGMOPHORA COLORADOENSIS, Stearns. 



Helix (Arionta) coloradol'nuix, Stearxs, Proc. IJ. S. Nat. Mus., XIII, p. 206, pi. XV, 

 figs. 6, 8, 12 (not fig. 7), 1890. 



Grand Canyon of the Colorado River, Arizona, opposite the Kaibab 

 plateau, at an elevation of 3,500 feet; Dr. C. Hart Merriam. 



This species, though belonging to the same region, has so far been 

 collected only at the type locality. It is closely related to E. magda- 

 lenensis, but seems separable. In the original paper by Stearns the 

 two figures representing the upper surface of the si)ire were transposed, 

 so that the references to them are' erroneous and should be reversed, 

 as a careful comparison of them with the text of the description would 



