FORAMIMFEEA OF THE WEST OF SCOTLAND. 249 



178. Lagena lasvigata (Keuss). (Plate 41. figs. 23, 24.) 



Fissurina laevigata, Reuss, 1849-50, FOT. p. 366, pi. xlvi. (i.) fig. 1. 

 Lagena laevigata, Brady, 1884, FC. p. 473, pi. cxiv. fig. 8, a, b. 



23 Stations. 



This ubiquitous species occurs at nearly every Stn. and in its usual profusion of 

 forms. The best and most typical examples occur at Stns. 4, 10, and 20, where the 

 species attains exceptionally large dimensions. Stn. 4 is also noteworthy for the 

 presence of a coarsely punctate form, which also occurs in lesser profusion at Stns. 14, 

 19, 20, and 23. This punctate form is very handsome, the shell-wall being usually 

 exceptionally hyaline. Trigonal specimens were recorded at Stns. 2, 5, 6, and 17, and a 

 polygonal example at Stn. 4. At Stn. 4, also, a specimen occurred with a large lipped 

 mouth opening on one side of the shell (compar-e the apertures in Sidebottom's 

 L. laevigata (var.), S. 1912, etc., LSP. 1912, pi. xvii. fig. 7). Specimens with similar 

 prominently lipped apertures occur in several of the ' Goldseeker ' dredgings from the 

 North of Scotland. 



179. Lagena acuta (Reuss). 



Fissurina acuta, Reuss, 1858, FP. p. 434 ; and 1862, FFL. p. 340, pi. vii. figs. 90, 91. 

 Lagena acuta, Brady, 1884, FC. p. 474, pi. lix. fig. G. 



16 Stations. 



This pointed form of L. laevigata is widely distributed in the dredgings and very 

 abundant at some Stns. Few of the specimens present terminal spines of any size, in 

 the majority the base is merely ornamented with one or more blunted points. Two 

 forms occur — the commonest is a broad inflated test with a thick opaline shell, the other 

 narrow, long, and hyaline. A trigonal specimen occurred at Stn. 4. 



180. Lagena falcata, Chaster. (Plate 41. fig. 25.) 



Lagena falcata, Chaster, 1892, FS. p. 61, pi. i. fig. 7. 



Heron-Allen & Earland, 1913, CI. p. 82, pi. vi. figs. 12, 13. 



1 Station. 



Two specimens at Stn. 4, one representing Chaster's original elongate type and the 

 other the short broad form as figured by us (ut supra). Previously only recorded ut 

 supra and by Wright from post-Tertiary deposits at Altcar (Proc. Liverpool Geol. Soc. 

 vol. ix. 1904, p. 364). 



181. Lagena lucida (Williamson). 



Entoaolenia marginata, var. lucida, Williamson, 1858, RFGB. p. 10, pi. i. figs. 22, 23. 

 Lagena lucida, Balkwill & Millett, 1884, FG. p. 80, pi. ii. fig. 7, pi. iii. figs. 4, 5. 



18 S ted ions. 



Almost universally distributed, abundant at some Stns. There is considerable 

 variation in the relative breadth of the sbells. Trigonal specimens occur at Stns. 1, 2, 



