400 CONTRIBUTIONS TO CANADIAN PALAEONTOLOGY. 



Orthonota parvula, Hall. 



Orthonota pi^rrula, "Hall 1870. Prelim. Notice Lamellibr. Shells, &c,, 2, p. S8. 



,, ,, „ 1883. Pal. X. York, vol. v., pt. 1, Plates and Exijlanationa : 



pi. 78, figs. 29-.S2. 

 Sangninolites truncatus, Hall. (P.irs. ) 1883. Iljiil., vol. V., pt. 1, Plate.s and Explanations : 



pi. 0.5, figs. l-G. 

 Orlhonota? parvula, Hall. 1885. Jhld., vol. V., pt 1, Lamellibr. 2, p. 483, pi. C5, figs. 

 2 and 3 ; and pi. 78, figs. 2l)-.32. 



Bartlett's Mills(in the "Lower third of the section"), C. Schuchert, 1895 ; 

 a beautifully preserved but very small specinien, not more than four milli- 

 metres in its maximum length, which Mr. Schuchert identifies with this 

 species. The specimen is No. 26,501 of the United States National 

 Museum Catalogue of Invertebrate Fossils. 



GA.STER(JPODA. 

 PlAIYO.STOMA TUKlilNATUM, Hall. 



Platiiostoma lurhhiatu, Hall. 1801. Fourteenth Rep. N. Y. St. CaVj. Nat. Hist., p. lOfi 

 ■ I .1 H 1870. Illustr. Devonian Fossils: Gasteropoda, jil. 10. 



187tl. Pal. X. ^'ork, vol. V., pt. 2, p. 27, pi. !l, figs. 12-24. 



Mr. Schuchert refers to this species si.Y specimens of a shell collected 

 by i\ir. Macintosh and himself at Bartlett's Mills (in the "Lower third of 

 the section ") in 1895. These specimens, which the writer has e.xamined 

 and which are No. 26,483 of the United States National Museum Cata- 

 logue of Invertebrate Fossils, seem to be intermediate in their characters 

 between P. tarhinatarn and /•'- lineatiua. 



Since the publication of Hall's " Illustrations of Devojiian Fossils'' it 

 has became oljvious that the fossil from the Corniferous limestone of Port 

 Colhiorne that Nicholson had previously described and figured (in 1874) 

 under the name " IldicoUrma '! serol'ina," is most proVjably a cast of 

 the interior of the shell of a specimen of P. tHrhuKiJiim. In the .Museum 

 of the Survey there are a few characteristic examples of the typical form 

 of 1'- t'urhinat/aiii., collected Vjy J. De Cew in 1857, from the Corniferous 

 limestone of Rama's Farm, near Port Colborne, and of Lot 4, Concession 

 3, Township of Bertie. 



Pleurotomaria capillaria, Conrad. 



PIcuroto'uiaria mpi/rnrin, Conrad. 1842. .Tourn. Acad. Xat. Sc. Philad.. vol. \^III., p. 

 271, pi. 10, fig. 11. 

 IP IP Hall. 1801. X^'ew .Species of Devon. Fossils, &c., p. 17. 



1.802. Fifteenth Rep. X. Y. St. Cab. Xat. Hist., p. 4- 

 5, 1,1. 5, fig. 2. 

 II 'I Hall. 1S70. Illiistr. Devonian Fossils : (Gasteropoda, ],1. 20, 



187'.l. Pal. N. York, vol. Y., pt. 2, p. 77, pi. 20, figs. 

 18-21. 



