82 THE NAUTILUS. 



We left Tucson early in September, 1913, and the second 

 night out camped at the Shaw goat ranch in the southern foot- 

 hills of the Rincon group. Those hills seemed too naked and 

 dry for our purpose and were left undisturbed. However, with 

 more knowledge of the ways of the snail, passing that way 

 again late in the winter of 1918, we dug into the Shaw ranch 

 and filled two cans with Sonorellas (S. hestema). 



On the eastern side of the San Pedro river, John Lyon's 

 mountain and the southern end of the Bonito range gave up 

 only a couple of Thysanophora homii. Snails have been re- 

 ported in the Little Dragoons, only four miles from our trail, 

 but were passed by. The White mountains were ahead and 

 high. Physas and Succineas were abundant at the watering 

 places for cattle, and box tortoises and rattlers plentiful in the 

 desert. 



The Graham mountains on the south bank of the Gila river, 

 so high that there is yellow pine and quaking asp, plentiful 

 enough for saw-mills, has Sonorella and Oreohelix. Camp was 

 made in Stockton pass for a day, and a collection gathered at 

 Mud Springs on the summit. However, between climbing and 

 the descent made by moonlight, only a couple of hours could 

 be given to the real work, and the collection was small. The 

 Sonorella reminds one of the odorous species of the Santa Cata- 

 linas, and has been described as a new species, S. grahamensis. 

 The deep" forest on the north side of this range is promising. 

 Safford, on the railway not over ten miles from the peak, with 

 an easy ascent, would be a convenient base for an explorer. 



From Solomonville to Coronado (on other branches of both 

 river and railway) a toll road is graded more or less, between 

 low hills of the Peloncillo range. Rock slides were plentiful, 

 but at that time also seemed to be too naked and dry. Cnly 

 one slide, six miles from Coronado, was disturbed, and this one 

 had Sonorella {S. delicata) and one of the rare Price's rattlers. 

 The snake was hustled into a Velvet Joe tobacco can with the 

 snails, and all drowned in the Gila. Here I had another walk 

 by moonlight in a strange country, but Cole had a hot supper 

 ready. This Peloncillo range needs further investigation. It 

 is about 130 miles in length, from Clifton to a point on the 



