﻿45 Distribution of Species 19 



dition of the slab. The edges of the slab were 

 sharp and showed no evidence of being water- 

 worn. The character of the rock is similar to 

 that in the immediate vicinity. The highest 

 rock, stratigraphically, through which the 

 stream flows, and to the north, is the Utica 

 shale. The slab contained 15 or 20 specimens. 



Molluscoidea 



BRA CH 10 POD A . 



Lingula (?) ovata, sp. nov. PI. 4, Fig. 3. 



General form of the shell ovate, with the greatest length 7 mm. 

 and width 5 mm. Rather strongly and uniformly convex. Sur- 

 face marked by concentric lines. A great many fragments of 

 this species were found, but only two perfect specimens. It is 

 with considerable hesitancy that these specimens are referred to a 

 new species'. There is a strong resemblance to L. iole Billings 

 (Pal. Fos. Vol. 1, p. 215, fig. 1), but L. iole is smaller, more tri- 

 angular, and is distinctly striated. The brachial valve of L. 

 aeu/ninata Conrad (Pal. N. Y., Vol 8, pt. 1, pi. 1, fig. 1,2) also 

 resembles this species. Our specimens have somewhat the same 

 shape but are more arched, less acute, smaller, and show no 

 striae. 



Distribution. — Found occasionally in the upper portions of the 

 Calciferous at Ft. Hunter, Tribes Hill, Cana- 

 joharie, and Hast Canada Creek. 



Dalmanella wemplei Cleland. 



Am. Pal. Vol. 3, Bull. 13, 1900, p. 17, pi. 17, figs. 10, 11, 12, 13. 



Distribution. — This species occurs at Tribes Hill, Ft. Hunter, 

 the "Noses" at Yosts, East Canada Creek, 

 Canajoharie, and will probably be found at 

 Palatine Bridge and to the west. D. macloedi 

 Whitfield resembles this shell very closely, but 

 the surface of the type specimen is so poorly 

 preserved that it does not seem well to include 

 it in that species. It is possible that when 



