frails while crabs as Farisites grothlandica Helidits and a Steptelasma are the common frails. These crabs are again associated with the peculiar "cylindroto" layers. In all cases when the cylindrato is decided the bits are also cross lidded or wravy and in most cases the crabs are stilled out often on turned. The Steptel- asma are often common one cylindroto layer that is not decidedly disturbed. Sometimes they are large at than again very small. Edges often rounded. Above the coal horizon for 10-15 feet in which is a zone probably 20 feet thick occur an abundance of Delonarella testudinaria (like) Helutella maria, Retifragium alternato? Leperditia and several Ostracoda. Crabs also occur in this zone but in isolated specimens. Both horizons are in Richardons D 4. These two horizons are about 2 1/2 to 3 miles west of Green River. Between Green River and Cotton River the strata dip but very