Nomenclature of the Foraminifera. 29 



Model no. 6.2. Polymorphina (Guttulina) communis* , D'Orb. 

 Page 266, no. 15, pi. 12. figs. 1-4. 



Hab. Adriatic ; fossil near Bordeaux, Paris, Dax, and Castel- 

 Arquato. PI. II. fig. 47. 



One of the forms alluded to in a previous paper as figured by 

 D'Orbigny. It is the typical Polymorphina lactea, W. & J., sp. 



Model no. 63. Polymorphina (Globulina) gibbet, D'Orb. 

 Page 26, no. 20. 



Hab. Atlantic (on the coast near Rochelle), Adriatic (near 

 Rimini) ; fossil, near Paris, at Grignon, near Dax, near Bordeaux, 

 at Chavagnes (Maine-et-Loire), and at Castel-Arquato. PI. II. 

 fig. 52. 



The simplest and Globuline condition of Polymorphina; the 

 chambers are few in number and embrace each other so as to 

 leave no inequalities in the surface-contour. 



Model no. 64. Virgulina squamosa, D'Orb. Page 267, no. 1. 



Hab. Fossil near Sienna. Plate II. fia:. 66. 



One of the bisenal forms of Bulimina, simulating Textularia 

 in its mode of growth ; much elongated, like the more delicate 

 Textularice, but having the lengthened and twisted Bulimine 

 aperture. V. seftamosa is subordinate to V. Schreibersii. 



Model no. 65. Sphceroidina bulloieles, D'Orb. Page 267, no. 1. 



Hab. Adriatic, near Rimini, Isle of France; fossil near Sienna. 

 PI. II. fig. 58. 



A good subtype, nearly related to Globigerina, but, in its clear 

 and white shell, indistinct perforations, and general arrangement 

 of chambers, bearing great similarity (or isomorphism) to the 

 MiliolcE. Its home is in very deep water, and it occurs most 

 plentifully in the seas of warm regions. 



Model no. 66. Clavulina Petrisiensis *, D'Orb. Page 268, no. 3. 



Hab. Fossil near Paris. PI. I. fig. 26. 



Type, Valvulina trianguleiris. This form is directly interme- 

 diate between the type (Model no. 25) and the narrow, pointed 

 condition shown in Model no. 2 (V. Cletvulus). See Carpen- 

 ter's 'Introd.' pi. 11. figs. 17, 18, and D'Orbigny's "Cuba" 

 (Valvulina tricarinatet), pi. 2. figs. 16-18. The Model appears 

 to have been taken from a specimen which has accidentally lost 

 its valve. 



Model no. 67. Uvigerina ' pygmaa*, D'Orb. Page 269, no. 2, 

 pi. 12. figs. 8, 9. 



Hab. Fossil near Sienna. PI. II. fig. 54. 

 A typical form. 



