94 CORRELATION OF GEOLOGICAL FAUNAS. [bull. 210. 
There are 29 faunnles occurring above the horizon of the Oneonta 
formation, whose specific composition is analyzed. The faunules are 
from the counties of Chenango, Broome, and Delaware, New York 
State. The species of the characteristic Chemung fauna reported as 
present in these 29 faunules of this region are given in Table XXV. 
Table XXV. — Spirifer disjunctus fauna: Characteristic representatives of the 
fauna reported in the eastern counties of New York and Pennsylvania. 
1. Spirifer mesistrialis . _ 6 4. Camarotoechia contracta 1 
2. Productella lachrymosa 8 5. Spirifer disjunctus 1 
3. Delthyris mesicostalis (/ 9 
As to the occurrence of Productella lachrymosa, it was also reported 
by Clarke from the Juliand Hill locality in Greene Township, Che- 
nango County/' 
Prosser, referring to the identification of the same species in a 
faunule from the extreme southwestern corner of the township (his 
station XXXVI A 1), says: 
Probably some of these specimens should be cf. P. speciosa of Ithaca, but the 
pustules are coarser than in this species. So identified by Clarke in Thirteenth 
Annual Report, page 543. ' 
Dr. Clarke, referring to the Juliand Hill faunule, says: 
Fossils are abundant throughout these shales and are of typical Chemung 
expression. < l 
In no other faunule of the Chenango localities reported by Dr. 
Clarke in the paper cited is this species mentioned, and in none of 
his faunule lists are any species of the characteristic Chemung list 
reported, not already mentioned in the list above/ 
The one record of Camarotozchia contracta made by Prosser is from 
the Pixley Mill faunule north of Afton. The only identification of 
Spirifer disjunctus by Prosser is in a faunule (XLII B 5) in the sec- 
tion southwest of Port Crane near the top of the hill. This obser- 
vation led him to remark: 
The occurrence of this characteristic Chemung species conclusively proves that 
the rocks near the top of the high hill south of Port Crane are in the Chemung 
formation./ 
In order to test the equivalency of this fauna it will be necessary 
to make a more deliberate examination of its content, and to study 
the bionic values which the several species hold in the general corpo- 
rate fauna as a whole. 
We have the carefulty collected statistics of 29 faunules reported 
by Prosser from this so-called Chemung formation of the eastern 
counties. The total number of species positively identified is 65, 
a Three times positively. 
&The stratigraphic and faunal relations of the Oneonta sandstones and shales, the Ithaca 
and the Portage groups in central New York, by John M. Clarke: Fifteenth Ann. Rept. State 
Geologist New York, 1895, pp. 2T-81. 
c Fifteenth Ann. Rept. State Geologist New York, p. 152. 
d Thirteenth Ann. Rept. State Geologist New York, p. 543. 
e Table XXV. above. 
/Fifteenth Ann. Rept. State Geologist New York, p. 160. 
