rHK NAUTILUS. 51 



in the Ciiiricahuas. The first Sunday morning in the Huachucas I 

 rested up a little, and found there was nothing out of repair except a 

 few fingers. I am not afraid of an automobile now. 



Truly, snails were as thick together on the under surface of rocks 

 as mussels are found on the seashore. At the very peak of one of 

 the highest mountains, composed of slabs of limestone, there was not 

 enough stone to cover the Oreohelix. They were hibernating on top 

 and glued together in masses. Upon one side of the peak a dark 

 banded variety was found, upon the other, not two hundred feet 

 away, a white variety. This shell seems to be a home-body. A 

 canyon though three miles in length from top to bottom, was usu- 

 ally peopled by one variety. Over a divide but a few steps was 

 another variety, though every colony in the canyon was liable to 

 have some distinctive mark in size, color or form. And this was 

 true of the Ashmunellas. No two colonies seemed exactly alike, 

 and they did not visit back and forth, nor travel far from the best 

 part of their own rock pile. 



On the south side of the Huachucas I found a colony of typical 

 Ashmunella cliiricahuana about one-half albinoes, a mile west a 

 colony of typical Ashmunella /evettei, nearly all albinoes. Half a 

 mile lower down the levettei were chestnut-colored and polished. In 

 between these three colonies were light horn-colored shells running 

 from typical levettei with four large teeth to typical chiricahuana 

 with no teeth at all, and all forms between, one tooth, two teeth, 

 three teeth, rudimentary forms of these, and mere suspicions of teeth 

 or thickening of the lip. Did these two species come together here, 

 or was this the exact spot upon which the original Ashmunella 

 Adam and Eve located ? It is up to Dr. Pilsbry. I have described 

 two species there can be no mistake in. With no courage left, the 

 whole responsibility is now dumped upon his siioulders. The last 

 heard from Messrs. Clapp and Walker, they were running too. 



Some of the Oreohelix are black, white, brown, red, banded, lined, 

 speckled, mottled and variegated, of only ten mm. diameter. Other 

 colonies of similar colors were of twenty-five mm. diameter. Some 

 were carinated, some as round-barreled and as umbilicated as a 

 Circinaria, some depressed, and some were old-time bee-hives. The 

 levettei colonies, outside of the albino camp, varied from dark chest- 

 nut to dull white, and from ten mm. diameter to twenty millimeters. 



The broken rocks tumbled down from the cliffs, the " slide," or talus, 



