86 



Ells's report for 1888, published in 1889. This species also resembles 

 one from the limestones of the Beccaguimic, N.B., collected by Dr. 

 Bailty. 



12. Lingulepis, sp. With exceedingly fine radiating strias. Shell: 

 ovate, elliptical, anterior margin rounded ; greatest breadth at about 

 three-fourths distance from beak to anterior margin. Beak rather 

 prominently pointed. 



13. Lept<e>ia ( Plectambonites) sericea, Sowerby, sp. Two or three 

 typical examples of this characteristic Trenton species occur in the 

 collection from Mountain Hill. One form resembles the Hudson 

 River or Lorraine variety, being large and quadrangular. 



14. Leptmia {Plectambonites) sp. A diminutive form of Leptasna 

 closely resembling L. sericea, but probably distinct also occurs in 

 the collection. 



15 Strophomena Aurora, Billings. 



16. Strophomena (Rafinesquina) alter?iata, (Conrad, MS.) 

 Emmons. 



17. Strophomena (Rafinesquina), sp. now 



18. Strophomena or Leptasnoid shell, similar to the form occur- 

 ring at the Montcalm market exposures. Probably new generic type. 



19. Orthis (Dalmaneila) tcstudinaria, Dalman. 



20. Orthis (Plectorthis) plicatella, Hall. Probably the above 

 species. The specimen is not sufficiently well preserved to state 

 definitely. May be Orthis (Dinorthis) pectinella, Conrad. 



2 1 . Ortliambonites ? sp. 



22. Camerella or Anastrophia, sp. 



Gasteropoda. 



23. Aletoptoma, sp. There appear to be two forms of this genus 

 in the collection from Mountain Hill, one a comparatively large form 

 the other much smaller. The smaller ones shows concentric zones. 

 Beak in both eccentric pointing anteriorly. 



24. Murchisonia I sp. 



ClKRIPEDIA. 



25. Turri/epas, sp. nov. Several specimens of a species of Tur- 



