Nomenclature of the Foraminifera. 23 



Model no. 25. Valvulina triangularis'^, D'Orb. 

 Page 270, no. 1. 



Hab. Fossil near Paris. PI. I. fig. 24. 



This is the arenaceous, triserial, three-sided shell which may 

 be looked upon as the type of a very variable group.. The two 

 Clavuline varieties which are represented by Models nos. 2 and 

 66 show the wide range, on one side ; and Prof. Williamson's 

 Rotalina fusca {Valvulina Austriaca), Monograph, pi. 5. figs. 114, 

 115, exhibits the opposite extreme in contour. 



LiVRAISON 2"^^. 

 Model no. 26. Lingulina carinata, D'Orb. Page 257, no. 1. 



Hah. Antilles; and fossil near Sienna. PI. I. fig. 28. 



The compressed, sharp-edged, straight subtype of Nodosarina, 

 common as a fossil in the Lias and in many Tertiary clays, but 

 rare in a recent condition. In D'Orbigny's "Cuba" it is men- 

 tioned as occurring in the West-Indian seas and in the neigh- 

 bourhood of the Canaries. It is figured in Williamson's Mono- 

 graph (pi. 2. figs. 33, 34), and noted as having been found recent 

 in three British localities. Dr. Carpenter has it very large from 

 Japan. 



Model no. 27. Planularia Cymba*, D'Orb. Page 260, no. 4, 

 pi. 10. fig. 9. 



Hab. Adriatic. PI. I. fig. 38. 



This has been already noticed by us amongst the forms illus- 

 trated by figures in D'Orbigny's Memoir. 



Model no. 28. Textularia gibbosa"^, D'Orb. Page 262, no. 6. 



Hab. Mediterranean; and fossil at Castel-Arquato, Italy. 

 PI. II. fig. 60. 



This is one of the largest forms of Textularia, with ventricose 

 segments, and is found widely distributed. In common with 

 the other bold varieties, it is at home and most luxuriant in 

 water from 50 to 100 fathoms. 



Model no. 29. Polymorphina Burdigalensis, D'Orb. 

 Page 265, no. 2. 



Hab. Fossil near Bordeaux. PI. II. fig. 48. 



A somewhat unsymmetrical Polymorphina, having one side 

 flattened, and consequently an excentric aperture. The cham- 

 bers are numerous, and are compactly put together, the edges 

 overlapping and giving a general even outline to the shell. 



