72 
CONTRIBUTIONS TO DEVONIAN PALEONTOLOGY. [bui.i.244. 
Zone 9 of Catawissa section (H63 A). — The faunule of this zone 
is from a 3- to 4-inch band of fossils, separated from the preceding 
zone by 80 feet of nearty barren beds. This zone contains the follow- 
ing species: 
Faunule of zone 9 of Catawissa section (1453 A). 
[a, abundant; c, common; r, rare.] 
1. Cystodictya meeki (a). 
2. Leiorhynchus mesicostale (c). 
3. Spirifer pennatus var. posterus (c). 
4. Palreoneilo emarginata (r). 
5. P. cf. filosa (r). 
6. Leda diversa (r). 
7. Leiopteria cf. bigsbyi (r). 
8. Actinopteria cf. perstrialis (c] 
Three or four fragments of a small Spirifer, probably representing 
Sp. pennatus var. posterus, occur in this faunule. 
Zone 10 of Catawissa section (lift 3 A). — At the top of 75 feet of bar 
ren beds, following zone 9, a thin fossiliferous zone bears the following 
faunule: 
Faunule of zone 10 of Catawissa section ( 1453 A ) . 
[a, abundant; c, common; r, rare.] 
1. Crinoid stems (c). 
2. Cyrtina hamiltonensis (a). 
3. Spirifer pennatus var. posterus (c). 
4. Nucula sp. (r). 
5. Bellerophon sp. (c). 
6. Cyclonema multilira (c). (Thespeci 
mens are much larger than thos< 
figured by Hall, but agree with then' 
in other respects. ) 
7. Orthoceras cf. fulgidum (r). 
The association of the recurrent Hamilton forms, Cyrtina Hamilton 
ensis and Sp. pennatus var. posterus, as dominant forms in this and othe: 
faunules of this section, is paralleled by the association of the sanl 
species in the Ithaca fauna of the Ithaca section. Above this zone 
which is 435 feet above the Genesee shale of this section, Sp. pen 
natus var. posterus appears in most of the faunules up to the top o 
the section. This variety first appears as a common form in the Ithac: 
section 380 feet above the Genesee shale of that section, and is knowi 
by the writer to continue through at least 260 feet of the Ithaca beds 
Zone 11 of Catawissa section (llfiS A).— I following the preceding 
zone are 54 feet of barren or nearly barren beds, at the top of whicl 
occurs the following faunule: 
Faunule of zone 11 of Catawissa section (1453 A). 
[a, abundant; e, common; r, rare.) 
1. Cystodictya meeki (a). 
2. Cyrtina hamiltonensis (r). 
3. Spirifer pennatus var. posterus ( r ) . 
4. Reticularia lsevis (r). 
5. Sanguinolites (?) sp. (r). 
(>. Nucula sp. (r). 
7. Palseoneilo plana (c). 
8. Leda diversa (r). 
9. Actinopteria perstrialis (s 
