FORMATIONS OF DEVONIAN AGE. 83 
6. Fenestella sp. undet. 
7. Gypidula galeata (Dal.) var. 
8. Gypidula angulata n. sp. 
9. Rhynchonella altiplicata Hall. 
10. Uneinulus pyramidatus (Hall). 
11. Rhynchotreta transversa n. sp. 
12. Atrypa reticularis (Linn.). 
13. Spirifer octocostatus Hall. 
14. Spirifer concinnus Hall. 
15. Cyrtina sp. undet. 
16. Rhynchospira formosa (Hall). 
17. Meristella levis (Van.). 
18. Nucleospira ventricosa Hall. 
19. Rhombopteria clathratus n. sp. 
20. Actinopteria communis (Hall). 
21. Bulimorpha? helderberge n. sp. 
22. Loxonema? sp. undet. 
23. Platyceras gibbosum Hall. 
The composition of this fauna is quite different from any of those 
which have been studied from the lower beds of the Coeymans lime- 
stone. Its most conspicuous characteristics are—first, the entire ab- _ 
sence of the genera Stropheodonta and Strophonella, which are usually 
among the commonest species of the Coeymans limestone; and second, 
the increased representation of the genus Spirifer, which is usually 
rare in the Coeymans fauna. In this last character the fauna ap- 
proaches that of the superjacent New Scotland beds, where the species 
of Spirifer are among the commonest members of the fauna. Because 
of the presence of Gypidula, however, and especially of a varietal 
form of Gypidula galeata, the strata containing this fauna are re- 
tained in the Coeymans limestone. 
Locality 37 A.—This locality is in the hillside, just above the large 
spring, a little over one-half mile northeast of Peter’s Valley. The 
outcrop is in the lower portion of the Coeymans limestone, all of 
the higher beds being covered with drift. The Manlius limestone, also, 
outcrops at this locality, a little lower down the hillside. The species 
identified from here are as follows: 
1. Zaphrentis sp. undet. 
2. Lichenalia torta Hall. 
3. Stropheodonta varistriata (Con.). 
