184 Report of the State Geologist. 



number of plications in fold and sinus, and in vascular markings the speci- 

 mens from Noblesville agree closely with typical specimens of Rhynchonella 

 venustula. 



3 



Rhynchonella (Hypothykis) venustula, Hall. 

 Nohlesville, N, Y. 



1. Partially exfoliated pedicle-valve, showing seven plications in the sinus. 



2. Internal cast of pedicle-valve, showing vascular markings. 



3-5. Front, lateral and cardinal views, showing the strongly gibbous form of the specimens. 



The distribution of Mhynchorbella venushila, Hall, which is either iden- 

 tical with or very closely related to the European species It. cuboides, Sowerby, 

 has previously been confined to a belt of country in central New York, 

 extending from Madison county on the east to Yates county on the west, and 

 in its range Professor Hall reported the species " in the Tully limestone, at 

 Tully and Tinker's falls in Onondaga county ; at Ovid in Seneca county; at 

 Benton and Penn Yan in Yates county, New York. 111 The final volume of 

 the Palaeontology of New York (Brachiopoda II) does not indicate either a 

 greater distribution or range for the New York species, although it notes its 

 close relationship to the II. cuboides Of Europe. 8 The species has also been 

 considered by Professor H. S. Williams in a paper on "The Cuboides Zone 

 and its Fauna, 11 but no mention is made of its occurrence at additional 

 localities.' Professor S. (t. Williams in his paper on "The Tully limestone, 

 its Distribution and its known Fossils, 11 reported the species from South 

 Lebanon in the southern part of Madison county, 4 which, as far as the writer 

 is aware, was its farthest known eastern distribution previous to its discovery 

 in ( )tsego county. 



• Geological Survey, New York, Palaeontology/ Vol. IV., Part L, 1K67. p. 348. 

 1 Ibid., Vol. VIII , Part II., 1894, p. 200. 



■'< Bulletiu Geological Society of America, Vol. I., pp. IHl-fiOO. 



* Sixth Annual Report State Geologist [New York] 1HK8, pp. 18, 27. 



