80 THE CANADIAN NATURALIST. 



Una vesicul avis ^ Buliminaovata, Cuneolina pavonia, Vertebrali- 

 na striata, and Lituola Soldanii. These, however, can be regard- 

 ed only as an incomplete Rhizopodal fauna. 



From the recent foraminifera obtained by the late Mr. Bar- 

 rett from different sea-zones, between 15 and 250 fathoms, on the 

 Jamaica cost, we learn that Amphutegina vulgaris^ Textularia 

 Barrettii, Dentalina acicula, Frondicularia complanata, Cristel- 

 lurioe and Lituola Soldami indicate at least 100 fathoms, and 

 probably more, as the depth at which the Pteropod-marl and the 

 Amphistegina-beds were deposited in that region. Pteropods are 

 found in some sea-muds at similar depths. 



Of the recent Jamaican specimens (evidently only the larger 

 and more conspicuous members of a rich Rhizopodal fauna), some 

 were taken at from 15 to 20 fathoms, namely, Quingueloculina 

 agglutinans. Q. pulchella, Orbiculina compressa, and 0. adunca ; 

 some at from 50 to 100 fathoms, namely, Orbiculina compressa, 

 Dentalina acicula, and Orbitolina vesicularis ; and several oth- 

 ers at from 100 to 250 fathoms, namely, Dentalina acicula, D. 

 communis, Gristellaria rotulata, C cultrata, C. Calcar, Frondi- 

 cularia complanata, Amphistegina vulgaris, Palytrema miniacea, 

 Bigenerina nodosaria, Verneuilina tricarinata, Textularia Tro- 

 chus, T. Barrettii, Cuneolina pavonia, Lituola Scorpiurus, and 

 C. Soldanii, 



Cuneolina^ a rare form, hitherto known only by figures and 

 description given by d'Orbigny, proves (as suspected) to be a 

 modification of Textularia ; aud T. Barrettii is intermediate be- 

 tween it and Textularia proper. The Frondicularice are remark- 

 ably large and beautiful ; and the Cristellarire and Dentalinm are 

 also large and relatively abundant. 



This fauna is almost identical with the fossil foraminifera of 

 the Tertiary " Pteropod-marl" of Jamaica, above mentioned, spe- 

 cimens from which also were given by the late Mr. Barrett in 

 1862 to the authors of this notice. 



Published, Montreal, April 15, 1864. 



