44 THE NAUTILUS. 



Many «leiui salamanders were along the bank and a lew live 

 ones were seen in the water. This shallow water-hole did not 

 look as though it could have existed ver>' long, and it was a 

 long distance from any other water. We were much surprised 

 to see several gi'cat blue herons fly from the water at our ap- 

 proach, and wondered what they were feeding upon, or we 

 should not have looked for any mollusks there. It would be 

 interesting to know by what agency they got there. Hand 

 (Nautilus, XXVII, 1914, p. 144) noted Flanorbis vermicu- 

 laris in a small artificial pond in California, and raised the 

 same question, "How did they get there?" 



Sta. 240, at base of a rocky sandstone ledge about twelve 

 miles north of Lost Cabin on the road to Ten Sleep. 



PupiUa muscorum xerohia Pils. 

 Vallonia- . cyclophorella Ancey 



Sta. 241, creek bottom, about three miles above Ten Sleep. 



Agriolimax campestris (Binney). 



OreoheUx cooperi (W. G. B.) ? 



Fhysa gyriiw Say ("peculiar long form") 



Pyramidula cronkhitei anthoyxyi Pils. 



Succinea avara Say 



Vallonia f/racUkosta Reinh. 



Vitrina alaskana Dall 



Zonitoidres arborea (Say) 



Only one fragment of OreoheUx was found, apparently 0. 

 cooperi. and it may have been brought down from up-stream 

 in the spring flood. Agriolimax is represented by two verj' 

 small examples. 



Sta. 242, creek bottom at Hyattville, among willows, narrow- 

 leafed cottonwoods, etc. Vallonia gracilicosta Reinh. 



Sta. 243, bottom lands on Shell Creek, at mouth of White 

 Water Creek, about five miles east of Shell. 



Lymncra ohrussa Say 



Physa anatitia Lea 



Flanorbis parvus Say 



Pyramidula cronkhitei anthonyi Pils. 



Vallonia gracilicosta Reinh. 



