THE 



CANADIAN RECORD 



OF SCIENCE. 

 vol. iv. october, 1891. no. 8. 



Description of a New Species of Panenka from 

 the Corniferous Limestone of Ontario. X27^ 



By J. F. Whiteaves. 1 



In August last four specimens of the shell of a larael 

 branchiate bivalve, of unusually large size, of a compressed, 

 transversely elongated and subovate form, and with the 

 surface marked with numerous coarse radiating ribs, were 

 collected by Mr. L. M. Lambe, of the Geological Survey, 

 in the Cornifemus limestone at St. Mary's, Ontario. The 

 specimens consist of two nearly perfect and tolerably well 

 preserved single valves, one a right valve and the other a 

 left, and two imperfect right valves, all of which evidently 

 belong to a single and undescribed species of Panenka. 



Although not mentioned in the latest manuals of 

 palasontology, the genus Panenka was duly proposed and 

 characterized by Barrande in 1881, in the sixth volume 

 of his " SystgmeSilurien du centre de la Boherae," in which 

 memoir no less than 231 species of this genus were de- 

 scribed and figured. The word Panenka is there stated to 

 be the equivalent of the Latin puella, in " la langue 

 tcheque," i. e., Czech or Bohemian.' In Schmidt's Polish 

 dictionary Panienka is given as the diminutive of Panna, a 

 girl. The genus was regarded by Barrande as peculiar to 



1 Communicated by permission of the Director of the Geological Survey 

 Department. 



1 



LI B RAR 



