90 PALEOZOIC PALEONTOLOGY. 
8. Spirifer macropleurus (Con.). 
9. Spwifer perlamellosus Hall. 
10. Spirifer cyclopterus Hall. 
11. Atrypina imbricata Hall. 
12. Trematospira multistriata Hall. 
13. Meristella levis (Van.). 
Locality 109 AA—Below Flatbrookville, in beds lying above those 
carrying the Gypidula galeatus fauna, but separated from them by 
the Stormville sandstone, which will be described later, there are 
calcareous, shaley beds belonging in the New Scotland formation, 
which are much harder and tougher than is usually the case with 
the shaley member of this formation. These beds contain numerous 
fossils, and the following species have been identified : 
. Streptelasma strictum Hall. 
Stropheodonta beckei Hall. 
Leptena rhomboidalis (Wilck.). 
Orthostrophia strophomenoides (Hall). 
Rhipidomella oblata Hall. 
Hatonia medialis (Van.). 
Spirifer macropleurus (Con.). 
8. Meristella levis (Van.). 
9. Dalmanites pleuroptyx (Green). 
A comparison of the faunas of the New Scotland beds with those 
enumerated from the Coeymans limestone shows several essential dif- 
ferences. In the Coeymans hmestone Gypidula galeatus was always 
the most conspicuous member of the fauna, except at the very summit 
of the formation. In the New Scotland beds the species never occurs. 
In the earlier fauna species of the Orthid genera and of Spirifer are 
among the most uncommon forms, but in the New Scotland beds 
these types of brachiopods are among the most abundant and char- 
acteristic members of the fauna. In the New Scotland fauna several 
genera, Hindia and Hatonia especially, are introduced for the first 
time, and they are types which have no near allies in the preceding 
fauna. There are, of course, several members of the New Scotland 
fauna which occur, also, in the Coeymans limestone, or are represented 
by closely-allied species, but the differences between the two faunas 
are of such an essential character as to indicate two separate immigra- 
tions from the exterior into the Cumberland basin. 
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