LAGENINAE 375 



2 1 6. Lagena quadricostulata, Reuss. 



Lagena quadricostulata, Reuss, 1870, FSP, p. 409; von S. 1870, FSP, pi. iv, figs. 25-30. 

 Lagena quadricostulata, Brady, 1884, FC, p. 486, pi. lix, fig. 15. 



Three stations: 228; WS 88, 408. 



Typical specimens are very rare but occur at 228 and WS 408, at which latter station a 

 trigonal specimen was also found. At WS 88, a curious variety almost quadrate in 

 shape and very compressed occurred. 



217. Lagena malcomsonii, Wright. 



Lagena laevigata var. malcomsonii, Wright, 1910-11, BCNI, p. 4, pi. i, figs, i, 2. 

 Lagena malcomsonii, Heron-Allen and Earland, 1913, CI, p. 84, pi. vi, fig. 9. 



Ten stations: 228, 388; WS 83, 86, 89, 91, 92, 93, 221, 245. 



More generally distributed and more abundant than the sharp-edged L. quadrata, 

 the best occurring at WS 88 where L. quadrata was also conspicuous. At the other two 

 stations where L. quadrata was conspicuous, L. malcomsonii, though represented, was 

 poorly developed. 



218. Lagena quadrata (Williamson). 



Entosolenia morginata var. quadrata, Williamson, 1858, RFGB, p. 11, pi. i, fig. 27. 



Lagena quadrata, Balkwill and Millett, 1884, FG, p. 81, pi. ii, fig. 8. 



Lagena quadrata, Sidebottom, 1904, etc., RFD, 1906, p. 8, pi. i, figs. 21, 22, pi. ii, figs. 1-3. 



Six stations: 388; WS 83, 88, 93, 221, 245. 



Often common, the best stations being WS 88, 93 and 221. 



219. Lagena quadrata var. bispinosa, var.n. (Plate XI, figs, i, 2). 

 Two stations: WS 88, 245. 



Test typically compressed and quadrate, furnished with a long entosolenian tube 

 extending down one side of the shell and up the other nearly to mid-way of the shell. 

 Furnished at the basal corners with two stiff, short, projecting spines, which appear to 

 be solid extensions of the side-walls of the test. Two specimens at WS 88 and one at 

 WS 245. In those from the first station the basal spines are extensions of the margin. 

 In that from WS 245, they are extended outwards at an angle of 45°. 



Length of test, without spines, between o-i8 and 0-20 mm.; breadth, 0-13 mm. 



The specimens strongly suggest our species L.forficula (H.-A. & E., 1913, CI, p. 87, 

 pi. vi, fig. 11), which diff"ers by the fact that that species has a rounded periphery and a 

 long produced neck, with a hooked apertural end, and sHghtly incurving basal spines, 

 suggesting its specific name. 



220. Lagena uncinata, sp.n. (Plate XI, fig. 3). 

 One station: WS 93. 



Test free, highly compressed, marginal edge acute but not carinate. Quadrate in 

 form, the corners of the aboral end rounded off, the oral end produced into a curved 



