The Xew Species of Brachiopoda. 365 



Parastrophia multiplicata. 

 Plate 10, figs. 15-17. 

 Parastrophia multiplicata, Hall. Palaeontology of N. Y., vol. VIII, pt. 2, 

 p. 367, pi. Ixiii, figs. 15, 16, 21. 1894. 



Tbis species differs from P. Greenii in its more conspicuously 

 developed median fold and sinus, flatter and larger plications, 

 and the greater number of the latter on the lateral slopes. The 

 usually sessile spondylium of the brachial valve may also prove a 

 distinguishing feature. 



Niagara dolomites. I^ear Milwaukee^ Wisconsin. 



Parastrophia latiplicata. 



Plate 10, figs. 6-10. 

 Parastrophia latiplicata, Hall. Palaeontology of N. Y., vol. VIII, pt. 2, p. 

 368, pi. Ixiii, figg, 23-27. 1894. 



This species is distinguished from the two preceding by its 

 smaller size, less robust form, two broad plications on the fold 

 and one in the sinus, with but a single pair on the lateral slopes. 



jS^iagara dolomites. Near Milwaukee^ Wisconsin, 



Liorhynchus robustus. 



Plate 10, figs. 18, 19. 



Liorhynchus robustus, Hall. Palaeontology of N. Y., vol. VIII, pt. 2, expl. 

 pi. lix, figs. 30, 31. 1894. 



Shell large, with highly convex brachial valve and shallow 

 pedicle- valve. Median fold and sinus well developed on brachial 

 and pedicle-valves respectively. Surface abundantly plicate. 

 Species is known only from an internal cast, which shows very 

 perfectly the muscular scars and vascular sinuses. 



Chemung group. • Steuben county, N. Y. 



Liorhynchus Lesleyi. 



Plate 9, figs. 41-43. 



Liorhynchus Lesleyi, Hall. Palaeontology of N. Y., vol. VIII, pt. 2, p. 868. pi. 

 lix, figs. 34-36. 1894. 



Shell of medium size with shallow pedicle, and deep brachial 

 valve. Median sinus on the former well defined; median fold on 

 the latter broad and not sharply delimited. Surface of both 

 valves sharply and abundantly plicated. 



Upper Devonian. Pennsylvania. 



