FORAMINIFER A— HERON- ALLEN AND EARLAND. 97 



117. BcojjJiax cylindrica, Brady. 



ReopJiax cijlindrica, Brady, 1884, FC. p. 299, pi. xxxii, figs. 7-9. 

 Fliut,' 1899, RFA. p. 274, pi. xviii, fig. 6. 



Station 18. 



A single perfect and one imperfect typical specimen. This appears to be a 

 very rare form, but there is a southern record, a fragment having been found 

 by the " Challenger " (Station 14-4) between the Cape of Good Hope and 

 Kerguelen Id. (1,570 fms.). The original specimens were from deep water in 

 the North Atlantic. 



HAPLOPHRAGMIUM, Reuss. 



118. Haplophragmium agglutinans (d'Orbigny). PL III, fig. 15. 



Sjnrolina agglutinans, d'Orbigny, 1846, FFV. p. 137, pi. vii, figs. 10-12. 

 Hajilophragmium agglutinans, Heron-Allen and Earland, 1914, etc., FKA. 1915, \). 612. 



Stations 6, 7, 13, 16, 17, 29, 31, 32, 33, 35, 40, 41. 



In the N.Z. area the species occurs abundantly at Station 6 in a large 

 rough-surfaced variety closely resemblmg H. cojyroUthiforme, Schwager (S. 18G7, 

 ZAS. p. 654, pi. 34 (xi), fig. 3). At Station 7 a single normal specimen 

 exhibiting the selection of magnetite, to which we have referred elsewhere (H.-A., 

 1915, RPF. p. 226, pi. xviii, fig. 62). In the Antarctic area the species exhibits 

 a greater range of variation, but the general tendency is towards depauperate 

 individuals in which the spiral chambers are reduced almost to the point of 

 disappearance, and are followed by a long series of delicate chambers attaining 

 frequently the number of 12 to 20, the entire test reaching a maximum length, 

 •55 mm. At Station 32 the depauperation is carried to such an extent that 

 the individual chambers are separated by deep sutural depressions and terminated 

 by a produced neck. At the same Station one of these specimens was found sessile 

 on a sponge-spicule. At Stations 16, 33, 35 and 40 a variation occurs in the 

 direction of H. 2)seudospirale, the later chambers becoming notably compressed. 



[Hyaline isomorphs. The innumerable variations of this species can nearly all 

 be matched in the equally large number of variations recorded for Marginulina. The 

 very pauperate form met with in deep water has a hyaline isomorph in the forms 

 figured by Terquem in his voluminous papers on the Lias of the Moselle (1858-1866). 

 M. sigma is perhaps the nearest (pi. xxi, fig. 6).] 



119. Haplophragmium pseudospirale (Williamson). 



Proteonina pseudospiralis, William.son, 1858, RFGB. p. 2, pi. i, figs. 2, .3. 

 Haplophragmium pseudospirale, Millett, 1898, etc., FM. 1899, p. 358. 



Stations 6, 33, 36, 40. 



Very few specimens in both areas. The best Antarctic specimens at Station 40. 



