90 CORRELATION OF GEOLOGICAL FAUNAS. [bull. am. 
It also contains such characteristic species as — 
Spirifer marcyi, and probably S. granulosus. 
Cypricardella bellistriata. 
Goniophora hamiltonensis. 
Macroclon hamiltonia?. 
Loxonema delphicola. 
Modiomorpha mytiloides. 
The faunule from Owego, to which I made reference in my papers of 1884 and 
1886, was so characteristically Hamiltonian in its species that at that time it was 
difficult to believe that the zone in which it occurred was not out of place. But 
the recent rediscovery of the zone at Waverly by Dr. Kindle, and a comparison of 
the forms, leaves no doubt as to the actual position of the recurrent Hamilton 
faunule in the midst of the Chemung formation. The species of this faunule are 
given in the following list: 
Table XXIII. — Recurrent Tropidoleptus fauna from Cemetery Hill, Owego, 
Tioga Count//, on side hill above and southeast of the old Erie station, collected 
by H. 8. Williams (U. S. Geological Survey station 1130 A).- 
1. Spirifer marcyi var. ■ 
aa ' 
Hamilton. 
2. Amboccelia umbonata 
<l<l 
Marcellus-Chemung. 
3. Cypricardella bellistriata 
aa 
Hamilton. 
4. Tropidoleptus carinatus 
c 
Hamilton. 
5. Leiopteria bigsbyi 
c 
Hamilton. 
6. Phacops rana 
r 
Hamilton. 
7. Productella speciosa 
r 
Portage-Chemung-Kinderhook. 
8. Coleolus acicula 
r 
Genesee. 
9. Loxonema delphicola 
r 
Hamilton. 
10. Camarotcechia cf . prolifica 
r 
Marcellus-Hamilton. 
11. Goniophora hamiltonensis 
r 
Hamilton. 
12. Modiomorpha mytiloides 
r 
Hamilton. 
13. Spirifer cf . granulosus 
rr 
Hamilton. 
14. Chonetes setigerus 
rr 
Marcellus- Waverly. 
15. C. lepidus 
rr 
Marcellus-Chemung. 
16. Macrodon hamiltonia? 
rr 
Hamilton. 
17. Lingula sp. 
rr 
18. Pterinea sp. 
rr 
19. Grammysia sp. 
rr 
20. Palseoneilo sp. 
rr 
21. Aviculopecten sp. 
rr 
It will be observed that of the 16 species specifically identified, all but 2 are 
Hamilton species. One of the exceptions is Productella speciosa, which has been 
reported from Portage, Chemung, and Kinderhook formations, and the other, 
Coleolus acicula, is a Genesee species. Eleven of the 16 have not been hitherto 
reported from above the Hamilton formation, while the other 4 range both below 
and above that formation. 
On the principle of specific identification, therefore, this faunule belongs to the 
genuine Tropidoleptus carinatus fauna, of which it contains four of the dominant 
species of the standard list. 
aa, abundant; aa, very abundant; c, common; r, rare; rr, very rare. 
