On the Nomenclature of the Foraminifera. 225 



the last mentioned from Mexico, the other two from Rio Janeiro. 

 C. Schmidtii * of French collections (Brazil) from the very slight, 

 if any, narrowing of the thorax near the base, seems to stand 

 on the confines of subsections a and b. 



XXVI. — On the Nomenclature of the Foraminifera. By Messrs. 

 W. K. Parker, F.Z.S., T. R. Jones, F.G.S., and H. B. Brady, 

 F.L.S., F.G.S. 



Part XI. — The Species enumerated by Batsch in 1791. 



In order of priority the Foraminifera described and figured by 

 Batsch should have been noticed next to those enumerated by 

 Linnreus and Gmelin ; but we had then had no opportunity of 

 seeing his book, or otherwise of identifying the species named 

 by him. The work, a copy of which we have been fortunate 

 enough to secure, appears to be scarce, and consists mainly of 

 a series of six beautiful and characteristic quarto copper-plates 

 of minute sea-shells. The letterpress is confined to four quarto 

 pages, one of which is occupied by the title. We propose to 

 give a translation of the descriptions of the species, and to ap- 

 pend to each such observations as appear necessary. Unlike 

 the drawings given by nearly all the other earlier naturalists, 

 those in Batsch's work leave no room for doubt as to the species 

 for which they are intended; the specimens have been so 

 carefully selected, and the figures are so beautifully drawn and 

 so well engraved, that identification becomes an easy process. 

 In addition to this, our author shows great judgment in putting 

 together the varietal forms of the Nodosarian group, distinguish- 

 ing them from the porccllanous-shelled Peneroplides. The whole 

 of the figures are of Foraminifera (sixteen " species ") ; and of 

 each form several drawings are given, together with minute out- 

 lines of the natural size. It is greatly to be regretted that 

 we have no record of the locality whence the material con- 

 taining the specimens figured was obtained, as one at least of 

 the varietal forms of Nodosaria (No. III., N. murecc) has not, so 

 far as we know, been noticed by subsequent observers. 



* C. Schmidtii. Elongata, postice attenuate. Caput obscurum, vertice 

 cinereo macula trigona nigra. Antennae nigrse, articulis basi griseis. 

 Thorax ante basin tuberculo parvo, deinde vix angustatus ; dorso gri- 

 seus, vittis quinque nigris, mcdiana latiore lineolam griseam includente. 

 Elytra grisea, nigro punctata, maculis confluentibus ochraceo-cinereis 

 conspersa, maculis majoribus vel fasciis tribus nigris, una (interdum 

 obsoleta) ante medium, altera majore angulata pone medium, tertiaquc 

 prope apicem; apicibus sinuato-truncatis, angiitis suturalibns promi- 

 nulis, exterioribus produetis. Pedes picei, cinereo annulati. Fceininse 

 segmentum ultimum dorsale attenuatum bifidum ; maris emarginatum. 

 Long. 7i tin. 3 $ . Hab. in Rio Janeiro, a Rev. Hamlet Clark lecta. 



Ann. fy Mag. N. Hist. Ser. 3. Vol. xv. 15 



