16 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
One species is referred to Pleurohorridonia with a query. This 
genus was recently described by Dunbar from Greenland and is as- 
signed to late Permian. The Oregon specimen is too poor and uncer- 
tainly identified to use in correlation. 
One species is referred to Linoproductus lutkewitschi which is not 
definitely located stratigraphically but comes from the Productus 
beds in Greenland. 
Anidanthus is a distinctive linoproductid known from Russia, 
North America, and Australia. In North America it is abundant at 
the top of the Leonard and the base of the Word formations. A 
Russian species A. aagardi, which is similar to the Oregon species, 
is known from the “Schwagerina’ beds and the Artinskian. 
Echinoconchus inexpectatus Cooper, n. sp., is most like E. fasciatus 
(Kutorga) which occurs in the “Schwagerina” limestone of Russia. 
In the United States outside Oregon Echinoconchus is an exceedingly 
rare fossil in the Permian. 
Marginifera is so uncertainly identified in the Oregon fauna that 
it cannot be used in correlation. The new genus Probolionia has a 
structure like that of the Mississippian genus Diaphragmus and can- 
not be evaluated in correlation at the present time. 
The pretty little shell here referred to Proboscidella(?) is like 
P.? kutorgae from the “Schwagerina’ beds of Russia but unlike 
any known American productoid. 
The Rhynchonellacea are not well represented in the Oregon fauna. 
The one Wellereila is like W. pinguis (Girty) from the Leonard and 
Word and W. shumardiana (Girty) from the Capitan limestone. 
Rhynchopora magna is so close to other rhynchoporas and the range 
of the genus is so long that it has little value in correlation. 
The Stenoscismatacea are common in Oregon and give close ties 
with Russia. Several species of Stenoscisma are all close to Russian 
forms from the “Schwagerina” beds. 
Cleiothyridina is rare in the Permian of North America. A species 
of small size is known from the Wolfcamp formation of the Glass 
Mountains. Cleiothyridina gerardi (Diener) to which one Oregon 
species is referred is a member of the fauna of the “Schwagerina” 
beds. Pseudomartinia berthiaumei is closest to species from the 
“Schwagerina’ beds of Russia. 
Spiriferella draschei (Toula) is a Russian species identified in Ore- 
gon which belongs in the “Schwagerina” beds and the Artinskian. It 
has also been identified in the Cache Creek series of British Columbia. 
Spiriferellina pauciplicata Cooper, n. sp., from Oregon is most like 
