OF CONCHOLOGY. 81 



Journal of the Linnean Society, Vol. x, No. 44, Nov., 1868, No. 45, 

 Jan., 1869. 



Observations on the Septian of the Ccecida', and some re- 

 marks on the subject of the suppression of the Genera 

 Brochiyia and Strebloceras or Phleboceras. By the 

 Marquis Leopold de Folin. Commuriicated by W. 

 Baird, M.D., F.R.S., &c. With a phite. 



The author proposes to suppress the latter genera, and merge 

 the species in the genus Caciuin, on the ground of there not be- 

 ing sufficient generic characters to warrant their separation. The 

 following new species are described : 



Cceciim formuJosiim^ Bahamas. 



" deciissatwn, " 



" infimum^ Aspinwall. 



" bimamillatum, La Guayra. 



" carmenense, Lagunam de Terminos. 



'* orientale, Mersina. 



" auriculatum, Palermam. 



" strif/osum, Rio Janeiro. 



" vestituvi, Vera Cruz. 



" circumvohitiwi, Aspinwall, 



" torquatum, Guadaloupe. 



" cHccina, Vera Cruz. 

 " Veracruzanum, " 



FRENCH. 



Journal de Conchyliologie. Vol. xviii, No. 1. 160 pp. 8vo, and 3 plates. 

 Paris, J:uuuii\y, 1870. 



Etude sur la mdehoire et V armature linguale des Cylin- 

 drellidce et de quelques genres voisins sotis le rajijJort 

 conchyJiologiqiie. By H. Crosse and P. Fischer. 



In this paper an attempt at a classification of the CyUndrellas 

 is made based upon the lingual dentition, and those species hav- 

 ing jaws are removed from the family and placed in Helicidce. 

 The species thus separated belong to the genera Euealodium^ 

 Berendtia and Holospira^ and are essentially Mexican, while the 

 true CyUndrellas are principally confined to the West Indies. 



The paper is prepared with great care, and will repay study. 

 I cannot agree with its authors in their estimate of the import- 

 ance of the jaw, and so far from arranging those species having 

 it in another family, I am not even convinced that its presence 

 is of generic value. 



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