FOKA.MINIFEHA— HERON-ALLEN AND EARLANi). 1-J!) 



225. Btiliiiiiiui buchianit. dOrbignv. 



Bidimina huchiaiut, d'Orbigny, 1846, FFV. p. 186, pi. xi, figs. 15-18. 

 Cushman, 1910, etc., FNP. 1911, p. 8-5, fig. 138. 



Stations 6, 7, 9. 



Very good and fairly nunierous at Station 7. Typical at Station G, typical 

 but very small at Station 9. 



226. Bnliittina roslrata, Brady. 



Bidimina roslrata, Brady, 1884, FC. p. 4U8, pi. li ti,!;s. H, l.j. 



Cushman, 1910, etc., FNP. 1911, p. 87, fig. 140. 



Station 7. 



A good many typical specimens. 



227. Bidiitiina eleyantissima, d"()rbigny. 



Bidindna eleyantissima, d'Orbigny, 1839, FAM. p. .51, pi. vii, fig.s. 13, 14. 



Heron-Allen and Earland, 1914, etc., FKA. 1915, p. 639. 



Stations 2, 3. 0, 8, 38. 



Rare, the best at Station 6. One large specimen at Station 38. 



228. Bulimina elegantissiina, var. seminuda, Terquem. 



Bulimina seminwla, Terquem, 1882, FEP. p. 117, pi. xii (xx), fig. 21. 



,, elegantissima, var. seminuda, Heron-Allen and Earland, 1914, etc., FKA. 1915, p. 639. 



Stations 1, 2, 5, 0, 27. 



Abundant and very variable. A single specimen only, in the Antarctic. Two 

 distinct types, megalospheric and microspheric, occur together at all the N.Z. 

 Stations, and the shape of the shell is mainly influenced by this character of 

 the primordial chamber, the microspheric specimens being acutely pointed and 

 increasing in width gradually to the oral extremity, whereas the megalospheric 

 are bluntly rounded at the apex and show very little increase in width with the 

 growth of the shell. At Station 6, where a very fine series of all sizes and types 

 occurred, a pair was found in association (not budding, as described by us 

 elsewhere (H.-A. 1915, RPF. p. 248. pi. xv, figs. 28 «-/)), l)ut specimens were 

 found here and at other Stations with absorbed teiniinal walls, suggesting 

 this condition. Many of the microspheric specimens approach Sidebottom's var. 

 fusiformis (S. 1918, FECA. p. 123, pi. iii, figs. 8-10), but rarely show the exag- 

 gerated tapering towards the oral extremity from the mid-growth of the shell, 

 which characterizes his variety. In the same way, many of these specimens 

 are furnished wnth a blunt spine at the apex, but only one example bearing a 

 teiminal spine and rcl'erable to Chapman's var. (ipiculatd was found, at Station 

 (C. 1907, TKV. p. 31, pi. iv. Hg. 77; and S. 1918, FECA. p. 123, pi. iii, fig. U). 



VOL. VI. . S 



