Manchester Memoirs, Vol. liv. (1910), No. 10. 1 1 



Spiroplecta, Ehrenberg. 



Spiroplecta sagittula, Defrance, sp. 



One very good specimen is present. 



Spiroplecta rosula, Ehrenberg. (Fl. i, fig. 8.) 



This is a hyah'ne and perforate form of 5. biformis. 

 Brady reports it from the North East Coast of England. 

 There are seven specimens on the slide. They are quite 

 transparent and \t.xy small. The perforations do not 

 show quite so distinctly as tho.se in my illustration. 



Gaudryina, d'Orbigny. 



Gaudryina filiforviis., Berthelin. (PI. i, fig. 9.) 



The tests are very small and of a light rusty-red 

 colour. They correspond to some of the specimens from 

 the Irish coast, and Mr. Wright of Belfast considers they 

 are rightly placed under this heading. Most of the tests 

 are nearly sharp at the commencement, and this may be 

 the microspheric form. 



Verneuilina, d'Orbigny. 



Verneuiltna polystropha, Reuss, sp. 



Very large specimens are found in this material, and 

 they are of a rusty-red hue as a rule. Among the examples 

 on the slide are two which are short and stumpy. 



Verneuilina spinulosa^ Reuss. 

 Evidently very frequent. 



Clavulina, d'Orbigny. 

 Clavulina angularis, d'Orbigny. (PI. i, fig. 10). 



Two very good examples are shown on the slide. 

 Brady in the Challenger Report states that it occurs in 

 the Mediterranean and the Red Sea. 



