38 PENNSYLVANIA AND NEW YORK DEVONIAN. [bull. 120 
Paracyclas tenuis Hall (?) or possibly the young of P. lirata (Con.) Hall (rr) 
Coleolus tenuicinctum Hall (rr) 
Hyolithes aclis Hall (?) (rr) 
Loxonema delpliicola Hall (r) 
Pleurotomaria lhcina Hall (?) (rr) 
Phacopa rana (Green) Hall (r) 
Homalonotus dekayi (Green) Em (rr) 
Dalmanites (Cryplneus) boothi (Green) Hall (rr) 
Chonetes setigera Hall (r) 
Actinopteria decussata Hall (rr) 
Cf. Pterinopecten vertunmus Hall (rr) 
Bellerophon sp (rr) 
No. 147G F5. — On the brink of the cascade, just above Sawkill Falls, 
are blue, rather coarse shales, with fossils abundant in layers, but else- 
where they are rare. Lamellibranch and Brachiopod shells, with Bryozoa, 
are present; but neither corals nor a stratum similar to the coral bed in 
Saw Creek near Bush kill, and other localities, was seen. I am not 
sure that the cascade is exactly the horizon for this zone in the creek, 
but it is near the beginning of the rather coarse arenaceous Hamilton 
shales, which are well shown farther down the creek. The zone above 
called Genesee is the blue argillaceous shale of the Hamilton, and a good 
collection of the characteristic smaller Lamellibrancks of this zone of 
the Hamilton was secured. 
Fauna of No. 1476 F5. 
Pakeoneilo constricta (Con. ) Hall (rr) 
Microdon (Cyprieardella) bellistriatus (Con.) Hall (rr) 
No. 1476 F6. — At about the middle of the cascade above Sawkill 
Falls, is a layer containing a mass of shells in which Crinoid stems are 
present while Spirifers as well as several other species are abundant. 
This may possibly represent the coral stratum. The rock is heavier 
and more arenaceous than that above the cascades. Beginning in the 
nearly vertical part of the Sawkill Falls, the rocks change to the 
coarse, arenaceous Hamilton shales, which are at their base in the bed 
of the creek. 
Fauna ok No. 1476 F6. 
Spirifera mucronata (Con . ) Bill (a) 
Spirifera granulifera Hall ^ 
Spirifera rnedialis Hall \ ^ ' 
These two speeies are abundant, but the condition of casts in which they 
occur renders it difficult to discriminate specifically between many of 
the specimens. A few external impressions show very clearly the pres- 
ence of granules, and other specimens have the characteristic form of 
S. medialis. 
Orthis vanuxemi Hall (c) 
Atrypa reticularis (Linn6) Dalrn (rr) 
Tropidoleptus carinatus (Con. ) Hall (r) 
Orthonota undulata Con (rr) 
Microdon (Cyprieardella) bellistriatus (Con.) Hall (rr) 
