92 TRANSACTIONS OF THE [pDEc. 16, 
Lingula rectilateralis Emmons ( Lingula quadrata Hall (1847) 
not Hichwald). ‘‘ Usually unassociated with other fossils,” in 
the dark colored central portion. 
(Glossina) Trentonensis Conrad ( Lingula attenuata? 
Hall, not Sowerby). From the dark colored central portion. 
Merocrinus typus Wale (1883) op. cit. From the upper por- 
tion. 
corroboratus Walc. (1883) op. cit. Same location. 
Murchisonia bellicincta Hall (1847) Pal. N. Y. I. From the 
dark colored upper portion. 
Pachydictya acuta Hall (Stictopora? acuta) (1847) op. cit. 
Common in the shaly portions. 
Palezaster matutinus Hall (1861) (Asterias matutinus). Fig- 
ured Trenton Falls type in Amer. Museum Nat. Hist. 
Rafinesquina camerata (Conrad) Hall (1847). Figured 
specimen (Pal. N. Y. I., Pl. XXXI. A., 2 a—b) from Trenton 
Falls in Amer. Museum Nat. Hist. 
Stictopora elegantula Hall (1847) op. cit. Occurring through- 
out. 
Stomatopora inflata (Hall) Vine (Alecto inflata Hall) (1847) 
op. cit. From the dark, compact central portion. 
Streptelasma corniculum Hall (Streptoplasma corniculum and 
S. multilamellosa H.) (1847) op. cit. From the lower shaly and 
gray crystalline portions. 
Strophomena Conradi Hall (1892) Pal. N. Y. VIII. 344, is 
not typically described from Trenton Falls, but the original of 
Pl. XX. 32-32a is from that locality. 
Strophomena Trentonensis W. and 8. ( Leptena subtenta ( Con- 
rad) Hall, 1847, op. cit.). Occurring throughout. 
Making, together with the species noted in the lists on the 
following pages, a total of forty-one species or varieties for 
which the types are credited to Trenton Falls. 
My thanks are due to Mr. Gilbert van Ingen, of Columbia 
University and to Prof. R. P. Whitfield, of the American 
Museum of Natural History, for the determination of specimens, 
and to the former also for various suggestions; also to Prof. J. 
F. Kemp for courtesies extended during the progress of the 
work. No local map of the region being at present obtainable, 
the one accompanying this paper is based on that in N. S. Ben- 
ton’s History of Herkimer Co., (1856). 
GEOLOGICAL DEPARTMENT, 
COLUMBIA UNIVERSITY. 
