THE NAUTILUS. 5 
in the yellow pine about a mile in width along the southern 
and eastern slopes. The talus covered with quaking asp largely 
composed of heavy sandstone blocks is an ideal situation and 
Oreohelix was at home. The summit of about two hundred 
acres fairly level is heavily clothed in spruce, and over the top, 
under the precipices are occasional springs that feed the streams 
crossing the Rainbow trail below. Many fairy bowers, coves 
and valleys are hidden here for botanists and snail seekers. 
Here we found a new Phlox (clutei); Oreohelix yavapai cwm- 
mingsi n. subsp. and Gonyodiscus shimeki cockerelli Pils. were 
found in their most robust form. 
All of the mountain is sandstone, or so near it that shells 
and their hunters notice no difference. ‘‘ Cretaceous sand- 
stones cover the top and Jurassic (?) sediments constitute the 
flanks,’’ to speak authoritively. The sandstone for the whole 
region is rather variable in character due perhaps to the several 
binding materials—lime, silicon, iron, manganese, etc. Many 
specimens were brought to camp, and Prof. Scott’s verdict ran 
to sandstone with an occasional decree favorable to petrified 
wood. 
Navajo Mountain has good soil for snail life, so fertile it is 
not probable that all the species were gathered. Ata spring 
on the south slope known to us as the Red Rock Spring, Oreo- 
helix yavapai clutei n. subsp. was discovered accidentally in the 
grass and rose bushes. Succinea avara was also here in the 
bogs. Among the rocks of a large canyon west of Endische 
Springs we found the bones of Oleohelix yavapai neomexicana 
Pils., but found no live ones. This canyon heads in a saddle 
near the main peak of the mountain and for convenience may 
be known as Big Pine Canyon until further orders. The north 
and northeast slopes were not fully explored although three of 
our party camped at War God Springs the better part of a week. 
The great rock slides of those slopes probably contain the best 
snaileries. Four Oreohelix tribes per mountain is a new record 
for Arizona. 
Before returning home Mr. Wetherill and his Indians led the 
way to the War God Springs and then on foot to the top of the 
mountain for the view over the San Juan country, and then 
