42 PALEOZOIC PALEONTOLOGY. 
Locality 136 B—One of the best localities in the State to collect 
from the lower Trenton horizon, is just at the north end of Drake’s 
pond, one mile southeast of Newton. The following species have 
been identified from this locality: 
1. Nyctopora billingsi Nich. 
2. Prasopora simulatria Ulr. 
3. Rhinidictya sp. undet. 
4. Lingulasma galenensis U. & S. 
5. Rafinesquina alternata (Kmm.). 
6. Plectambonites sericeus (Sow.). 
Strophomene incurvata (Shep.). 
8. Orthis tricenaria Con. 
9. Dinorthis pectinella (Kmm.). 
10. Platystrophia biforata (Sehl.). 
11. Dalmanella testudinaria (Dal.). 
12. Parastrophia hemiplicata (Hall). 
15. Cyrtodonta billingsi Ulr. 
14. /sotelus gigas De Kay. 
15. Bumastus trentonensis (Hmm.). 
16. Platymetopus trentonensis (Hall). 
17%. Calymene senaria Con. 
18. Ceraurus pleurexanthemus Green. 
19. Pterygometopus callicephalus (Hall). 
This group of species is strictly confined to the lower Trenton 
horizon, both the Orthis tricenaria and the Parastrophia hemiplicata 
zones being represented. None of the higher Trenton forms are 
present. 
Locality 137 A.—This locality hes two miles southeast of Newton 
and one-half mile northwest of Ihffs pond.* Two horizons are 
recognized here, the lower being on the top of the ridge, a short dis- 
tance from the subjacent Kittatinny limestone beds, while on the 
lower slope of the hill, towards the northwest, fossils from a some- 
what higher horizon were collected. The species identified from the 
lower bed at this locality are as follows: 
1. Streptelasma corniculum Hall. 
2. Actinostroma trentonensis Nn. sp. 
3. Lingula sp. undet. 
4. Strophomena incurvata (Shep.). 
* Locality 24, on Map No. 17, p. 75, loc. cit. 
