578 Professor E^nerson on HaWs Geological Collections. 



LiNGULA CUUTA, Con. 



Many specimens, retaining the black, shining, finely- striated sliell, and agree- 

 ing exactly with Utica and Fort Plain, N. Y., specimens, occur in the black lime- 

 stone associated in diflerent pieces of the rock with all the other Utica slate fossils 

 met with. 

 Eynchonella, sp. 



Several minute specimens occur, characterized by sharp ribs, very high keel, 

 and deep sinus ; in gray limestone with Entomostraca. 

 Chonetes conf. steiatella, Dal. 



A minute quite convex shell covered with fine ribs not visible except with 

 the lens. The ribs anastomose toward the border, and are sei)arated in groups 

 of from 8 to 10 by grooves twice the width of those between the separate striai ; 

 height 4-6 nun. In gray limestone with Entomostraca. 

 Pentamerus conchidium, Dal. 



The large mass of magnesiau limestone No. 109, from Eescue Harbor, con- 

 tains a single well-i)reserved specimen of this species and many cross sections, 

 showing the characteristic septum. 



TELLmOMYA LEVATA, Hall. 



1847. Ntimla levata, HaU. Pal. N. Y., vol. i, p. 150, pi. 34, fig. 1. 

 167.5. TelUnomya levata, Hall. Pal. Ohio, vol. ii, p. 82, pi. 1, fig. 23. 



This species is represented by a single sharply defined cast of the beak and 



central portions of the hinge plate. Enough is preserved to show that the shell 



was veutricose, w ith large incurved beaks and posterior curvature 



of the hinge plate. It agrees in all points with the figure of the 



interior of the shell in Pal. Ohio above cited. It occurs in a 



Fig. 3 magnified Small fragment of buff limestone from the north side of Frobisher 



three times. Bay, associated in the same piece with many indistinguishable 



fragments of bivalves, crinoid stems,and a minute Murchisonia gracilis. ? 



The figure is drawn from a cast in rubber of the impression. 



CONULARIA TRENTONEjS'SIS, Hall. 



A cast of one side of the shell, retaining in part the substance of the same 

 of deep chestnut brown, shows all the characteristics of this species. In gray 

 limestone with Entomostraca. 

 Gasteropoda. 



Besides the Madurea arctica quoted by Stevens in the Appendix to Hall's 

 Narrative, page 594, the collection examined by me contains single portions of 

 several species too fragmen tary for determination — a small Murchisonia gracilis, 

 Hall ; a Madurea^ and a small tinbinoid .shell wliich may be Cydoncma hilix. 



