292 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



includes at a locality near W'olsey ii miles (17.7 km.) south of 

 Neihart in the Little Belt Mountains : 



Micromitra pealei (Walcott ) 

 Obolus (JVcstoma) clla (Hall and Whitfield) 

 Lingidella desiderata (W'alcott) 

 Sceiiella sp. undt. 



Dorypyge ? quadriceps (Hall and Whitfield) 

 Alokistocare ? labrosiun Walcott 

 Asaphiscus calenus Walcott 

 Six miles (9.6 km.) northwest of Neihart I found at the same 

 horizon : 



Micromitra pealei (W^alcott) 

 Obolus tetonensis Walcott 

 Sceiiella sp. undt. 

 Below Sixteen Post Office, in Sixteen Mile Canyon, Meagher 

 County, Montana (Locality I59f) : 



Alokistocare pomona Walcott 

 Doliclwmetopus bessus Walcott 

 Five miles (8 km.) east-northeast of Logan, and i mile (1.6 km.) 

 north of junction of East and W^est Gallatin Rivers, Gallatin County, 

 Montana : 



Obolus (irestonia) ella (Hall and Whitfield) 

 Acrocephalites ? ma jus W'alcott 

 Asaphiscus camma Walcott 

 The above Wolsey shale fauna is far below the Capitol Creek 

 ( Park) shale and above the Flathead quartzite. 



When making my examinations about Helena in 1898, the results of 

 which were published in 1899,' I found abundant fossil remains in a 

 hard, dark, finely arenaceous or siliceous shale (=Park shale of 

 Weed) on the southeastern slope of Mount Helena about 200 feet 

 (60 m.) above the road in the canyon of Grizzly Gulch which extends 

 down into the southwestern suburb of the city. I followed these 

 shales to the southeast and found similar fossils 2 miles (3.2 km.) 

 southeast of the city (about one-half mile southeast of the suburb of 

 Lenox) at a locality near one to which my attention had been called 

 by Mr. Griswold. The fossils include at both localities : 

 Obolus (IVestonia) ella (Hall and Whitfield) 

 Lingidella helena (W'alcott) 

 Hyolithes 

 Ptyclioparia 



Geo!. Soc. of America, Vol. 10, Pre-Cambriaii Fossiliferous Formations. 



