62 HALKYARD, Fossil Foraminifera of the Blue Marl 



126. [Lagena bicarinata (Terquem. )"1 



[Fissurina bicarinata, Terquem, 1882, Foram. Eocene de Paris, 



p. 31, pi. I (IX), fig. 24a, b. 

 Lagena bicarinata, Balkwill & Millett, 1884, Foram. of 



Galway, p. 82, pi. II, fig. 4; and pi. Ill, fig. 9.] 



126A. Lagena quadrata (Williamson.) 



Entosolenia marginata, var. quadrata, Williamson, 1858, Rec. 



Brit. Foram., p. 11, pi. I, figs- 27, 28. 

 Lagena quadrata, Brady, 1884, Chall. Rep., p. 475, pi. LIX, 



figs. 3 and 16; pi. LX, fig. 5. 



Very rare and small. 



(The specimens should be referred to L. bicarinata 

 (Terquem).) 



127. Lagena quadrangularis, Brady. 



Lagena quadrangularis, Brady, 1884, Chall. Rep., p. 483, pi. 

 CXIV, fig. 1 J a, b. 



Very rare. The specimens found are not so elongate as 

 Brady's figure; one is provided with a long neck and is nearly 

 circular on the lateral face, which has in the centre a well-defined 

 ring of clear shell substance which, however, is not raised 

 above the surface. 



(These specimens in our opinion should also be allotted to 

 L. bicarinata (Terquem.). The long-necked specimen referred to 

 in the text may be compared with the similar abnormal form 

 figured by Sidebottom (S. 1912. L.S.P. p. 419, pi. XX, fig. 1.)) 



128. Lagena orbignyana (Seguenza.) 



Fissurina orbignyana, Seguenza, 1862, Foram. monotal. 



miocen. Messina, p. 66, pi. II, figs. 25, 26. 

 Lagena orbignyana, Brady, 1884, Chall. Rep., p. 484, pi. LIX, 



figs. 1, 18, 24-26. Winged variety fig. 20. 



Frequent. Amongst the deviations from type found were 

 a few specimens showing faint reticulation of the surface, also 

 faint striations, and signs of pittings. None of these markings 

 were sufficiently well-marked to warrant the examples being 

 noted as distinct varieties, but are interesting as being links 

 with L. clathrata Brady, L. lacunata Burrows & Holland, and 

 L, squamosa (Montagu). One specimen of trigonal form was 

 also noted. 



