1 8 HALKYARD, Fossil Foraminifera of the Blue Marl 



they take on the angular spiroloculine plan of growth. On 

 the other hand Halkyard's suggestion that Hauerina fra gil- 

 ls sima would be better transferred to Sigmoilina does not com- 

 mend itself to us, as a slight sigmoiline arrangement of the 

 earliest chambers is of more or less frequent occurrence in many 

 Miliolids, and should not in our opinion be regarded as of final 

 importance in the determination of the genus.) 



SUB-FAMILY PENEROPLIDIN^. 



Genus Cornuspira, Schultze. 



28. Cornuspira involvens, Reuss. 



Cornuspira involvens, Reuss, 1863 (1864), Sitz. k. Ak. Wiss. 



Wien, vol. XLVII (1), p. 39, pi. 1, fig. 2. 

 C. involvens, Brady, 1884, Chall. Rep., p. 200, pi. XI, figs. 1-3. 



Specimens very small and rare. 



(As all the specimens are represented by casts, specific- 

 identification appears to be a matter of opinion. The casts 

 represent at least two different forms.) 



29. Cornuspira foliacea (Philippi). 



Orbis foliaceus, Philippi, 1844, Enum. Mollusc. Sicilian, vol. II, 



p.' 147, pi. XXIV, fig. 26. 

 Cornuspira foliacea, Brady, 1884, Chall. Rep., p. 199, pi. XI, 



figs. 5-9. 



Specimens are small and rare, and do not show the rapidly 

 widening whorls which are characteristic of the species, being 

 of the form represented by Brady's figure 6 (ut supra). One at 

 least of the examples might possibly be referred to Bornemann's 

 C. reussl. 



(The specimens are of the original Philippi type, not of the 

 rapidly expanding type subsequently figured by Williamson. 

 Some of the specimens are near C. carinata (Costa).) 



30. Cornuspira crassisepta, Brady. 



Cornuspira crassisepta, Brady. 1882, Proc. Roy. Soc. Edin- 

 burgh, vol. XI, p. 714. 



C. crassisepta, Brady, 1884, Chall. Rep., p. 202, pi. CXIII, 

 fig. 20. 



Very rare, one specimen only found in Gathering No. 1, 

 1893. This single example corresponds closely with Brady's 

 description and figure. 



