prossee.] SECTIONS NEAR MILFORD. 37 
No. 1476 F3. — Cliff of bluish argillaceous shale ou east bank of 
creek above the Sawkill Falls. The shales split up into thin pieces 
are fine-grained and like those of the characteristic Hamilton. The 
fossils are common, mostly small Lamellibranchs, and in the horizon 
of Prof. White's Genesee shale. 
Fauna of No. 1476 F3. 
Paheoneilo constricta (Con. ) Hall (rr) 
Modiella pygnisea (Con. ) Hall (rr) 
Nuculites oblongatus Con (rr) 
Tellinopsis subemarginata (Con.) Hall (c) 
Nucnla lirata (Con.) Hall (?) (rr) 
A small and probably young shell. 
Grammysia sp (rr) 
Anibocrelia umbonata (Con.) Hall (r) 
( ?) Psilophyton princeps I)n (rr) 
Spirifera mucrouata (Con.) Bill (rr) 
Chonotes mucronata Hall * (rr) 
Chonetes setigera Hall (rr) 
Loxonenaa hamiltonia? Hall (?) (rr) 
Dalmanites (Cryphanis) booth! (Green) Hall (rr) 
Pleurotomaria sp (rr) 
Cf. Eugaster logani Hall (rr) 
No. 1470 F4. — Exposures in the creek, under the cliff of F3, and 
above the cascade which is a little higher than the brink of Sawkill 
Falls. These shales are rather coarser and somewhat more arenaceous 
than those a little higher up the bluff, but fossils are still common. 
Along the eastern side of the canyon, 15 to 20 feet and higher above 
the cascade, at the top of the Sawkill Falls, are mainly argillaceous 
shales in association with some that are slightly arenaceous. Fossils 
are common, especially small Lamellibranchs, near the base of the 
" Genesee shale" zone. 
Fauna of No. 1476 F4. 
PalsBoneilo eonstrieta (Con) Hall.. (a) 
Palseoneilo plana Hall (?) (rr) 
Paheoneilo muta Hall (rr) 
Nuculites oblongatns Con : . (rr) 
Tellinopsis subernarginata (Con.) Hall (rr) 
Chonetes coronata (Con . ) Hall (c) 
Ambocu'lia nmbonata (Con.) Hall , (a) 
Spirifera mucronata (Con. ) Bill (rr) 
Macrodon hainiltoniaB Hall (rr) 
Modiella pygmaea (Con . ) Hall (rr) 
Nncula corbuliformis Hall (rr) 
Nucnla bellistriata (Con.) Hall (rr) 
Miciodon (Cypricardella) bellistriatus (Con.) Hall (rr) 
Modiomorpba concentrica (Con.) Hall (rr) 
Two of the specimens are young shells like fig. 2, PL xxxv, (Geol. Surv. 
N. Y., Palaeontology, Vol. v, Pt. i, Lamellibranchiata II.) 
Orthonota (?) parvnla Hall (rr) 
