BULIMININAE 355 



Rare. All the specimens are poorly developed, especially as regards the marginal 

 spines so characteristic of British specimens. 



150. Bolivina variabilis (Williamson). 



Textiilaria variabilis (typica), Williamson, 1858, RFGB, p. 76, pi. vi, figs. 162, 163 (incorrectly 



numbered 161 and 162 on the plate). 



Bolivina variabilis, Cushman, 1918, etc., FAO, 1922, p. 49, pi. iv, fig. 3. 



Fifteen stations: 48, 51, 53, 228; WS 71, 77, 83, 89, 90, 91, 92, 221, 245, 408, 409. 



Often common, and, as in British gatherings, subject to a good deal of variation in the 

 smoothness of the external shell, which tends imperceptibly in the direction oiB.pseudo- 

 plicata. The best examples at WS71, 83, 221. At this last station some specimens 

 exhibited curvature of the long axis. 



151. Bolivina pseudo-plicata, Heron-Allen and Earland (Plate IX, figs. 9-1 1). 



Bolivina plicata, Brady, 1870, FTR, p. 302, pi. xii, figs, -j a,b {non d'Orbigny, 1839, FAM, 



p. 62, pi. viii, figs. 4-7). 



Boliziiia plicata, Halkyard, 1889, RFJ, p. 65, pi. i, fig. 13. 



Bolivina pseudo-plicata, Heron-Allen and Earland, 1930, FPD, p. 81, pi. iii, figs. 36-40. 



Bolivina plicatella, Cushman, 1930, FCFF, p. 46, pi. viii, fig. 10. 



Bolivina plicatella, Cushman and Parker, 1931, ACSA, p. 15, pi. iii, fig. 19. 



Twelve stations: 48, 51 ; WS 71, 77, 88, 90, 91, 92, 93, 99, 221, 409. 



Fairly frequent at the stations where it occurs and quite indistinguishable from 

 British specimens. Like them it presents considerable range of form, two well-marked 

 types predominating, long and narrow and short and broad respectively. These probably 

 represent the megalo- and microspheric forms. The best specimens at 48 and WS 88, 

 90, 92 and 221. (See p. 302.) 



152. Bolivina inflata, Heron-Allen and Earland. 



Bolivina inflata, Heron-Allen and Earland, 1913, CI, p. 68, pi. iv, figs. 16-19; 1915, FKA, 



p. 648; 1916, FSC, p. 43; 1916, FWS, p. 240. 



Bolivina inflata, Cushman, 1918, etc., FAO, 1922, p. 35, pi. ix, figs. 1-4. 



Nine stations: 51, 388; WS 77, 83, 88, 90, 92, 93, 221. 



Very rare, the best at WS 92, 93 and 221. 



153. Bolivina malovensis, sp.n. (Plate IX, figs. 12-15). 



Twelve stations: 228, 230, 388; WS 71, 83, 88, 89, 91, 92, 93, 221, 408. 



Test compressed, cuneate, broadening rather rapidly at the oral extremity. Con- 

 taining from 8 to 10 pairs of parallel-sided chambers increasing regularly in size. The 

 apex is bluntly rounded, with visible proloculum in the megalospheric stage, more 

 pointed in the microspheric. Marginal edge thick and rounded, straight at first, 

 becoming slightly lobulate towards the aperture. Aperture normal. Sutures distinct, 

 slightly depressed; surface smooth but not polished, sometimes slightly frosted or 



