238 CONTRIBUTIONS TO CANAllIAN PAL.'HONTOLOQY. 



parts, E. G. JrcConnell, 1888 : several nearly perfect specimens with 

 the test preserved, the largest of which is fully two inches and three 

 quarters in length, and a single cast of the interior of both valves, the 

 original of fig. 3. These have been examined and critically studied by 

 Professor Hall, and ai'o here placed in the genus Newberria entirely on 

 bis authority. 



PELECYPODA. 



Ptercnoi'Ecten. (Rp. undt.) 



Athabasca Eiver, ten miles below the mouth of the Clear Water, Dr. 

 E. Bell, 1882, two specimens, and E. (r. McConnell, 1890, three speci- 

 mens, all of which are too imperfect to be identified or described. 



Pterinea flabellum, Conrad. 



Ariculajlabi'l/ii, Cionrad. 1.S42. .Toiirn. Ac. Nat- Be. Phil., vol. VIII, p. 208, pi. 

 xii, fig. 8. 

 " " Vanuxem. 1S43. Gaol. Sarv. N. Y., Hep. Third Distr. 



Pimnea flahdla., Hal). 1884. Pal. St. N. Y., vol. V, pt. 1, p. 93, pi. siv, figs. 1-21, 



pi. XV, tigs. 1, 4-6, 8-10, and pi. Ixxxiii, figs. 11, 12. 

 Comp. Pleririea fa-'cicidaM, Goldfnss. 1840. Petref. Gernaan-, p. 137, pi- cxx, 



fig. r,. 



Plerincii J'asciculala, Drs. < i. and V. Sandberger. IS.'iO. Verstein. Rhein. 



Scliicbtens)'.st. Nassau, p. 293, pi. xxx, fig. 7. 

 Pleriiiru costidaht, F. A. Rumer. Dunker and Von Mej'er, Pahconto- 



grapliica, Bd. ii, S. 3, Taf. 1, fig. 3. 



Peai'c Eiver, at Vei-milion Ealls, E. (r. McConnell, 1889 ; two nearly 

 poi-fect and well preserved left valves. 



It seems to be douhtful whether P. liahelluia is identical with the P. 

 fasriculata of Goldfuss or not. In his Hi-st and second report as palaaon- 

 tologist to the State of New York, Coni-ad himself quotes P. fasciculata 

 as one of the fossils of that state, thougli in his subsequent description 

 of Auicukl flabella he makes no reference whatever to its rosomblance 

 to Goldfuss' species. On page 293 of their monograph of the fossils of 

 the Devonian rocks of Nassau, the Sandbei-gers place P Jiabellum, of 

 which tliey state that they have received an original oxam])le (" origi- 

 nal exemplar") from the Ilamillon (ri-oup of the State of New York, 

 tVom Hitchcock, — among the synonyms oi' P. fasciculata. 



