Manchester Memoirs, Vol . Ixii. (19 17) 19 



(The specimen agrees very closely with the original descrip- 

 tion of the species. Brady's subsequent figure is not altogether 

 satisfactory, the limbation being somewhat irregularly shown.} 



SUB-FAMILY ALVEOLININiE. 



Genus Alveolina, d'Orbigny. 

 31. Alveolina boscii (Defrance). 



Orysaria boscii, Defrance, 1820, Diet. Sci. Nat., vol. XVI. p. 



104 sub Fabularia; Atlas Zooph., pi. XLVIII, fig. 4. 

 Alveolina boscii, (d' Orbigny), 1826, Ann. Sci. Nat. vol. VII r 



p. 306, No. 5. 

 A. boscii, Brady, 1884, Chall. Rep., p. 222, pi. XVII, figs. 7-12. 



Very rare. In the uppermost gathering taken behind and 

 above the Bathing Establishment was found one small broken 

 cast in pyrites which bore some traces of the porcellanous 

 shell wall. 



(This cast seems to us probably to be a derived fossil. If 

 Alveolina were present at all in a gathering it would almost 

 certainly be of frequent occurrence.) 



FAMILY ASTRORHIZID^E. 



SUB-FAMILY ASTRORHIZIN^i. 



Genus Astrorhiza, Sandahl. 

 32. Astrorhiza granulosa, Brady. 



Astrorhiza granulosa, Brady, 1881, Ouar. journ. Micr. Soc. r 



vol. XXI, p. 48. 

 A. granulosa, Brady, 1884, Chall. Rep., p. 234, pi. 20, figs. 



14-23- 



I have assigned to this species a single example found in 

 1893. On comparing this specimen with Brady's figures I 

 find that it is broader in proportion to the length and does not 

 possess the same produced orifices, being in form almost simi- 

 lar to Technitella melo, Norman, though having an aperture 

 at each end of the test. My specimen is also much smaller than 

 those described by Brady, the length of which is noted as at 

 least \ in., whilst mine is but 7/iooths of an inch long. The 

 test of the Biarritz example is more consolidated than that of 

 recent specimens, but that is easily accounted for by the sup- 

 position that lime chemically concreted from the enclosing 

 marl has supplemented the ordinarily-deficient cement of the 

 test in this species and so tended to make the shell-wall more 



