FORAMTNIFERA -HERON-ALLKNT AND EARLANl). Ill 



more coarsely constructed and witli a smaller proportion of cement than is 

 usually the case. 



It may be observed {ut supra) that in the same year — 1878 — that Siddall 

 published this species it was very accurately described, but without a figure, by 

 Berthelin, under the name A. inegaspira. But m 1858 Terquem described and 

 hgured under the name Terehralina regularis an organism which unquestionably 

 bears a strilvuig resemblance to Siddall's form (T., 1858, etc., FLM. 1866 (pt. vi), 

 p. 473, pi. xix, fig. 3). He describes his species " Coquille reguliere, droite, 

 a spire turriculee, formee de 7 tours, sensiblement egaux." As regards the rival 

 claims of Siddall and Berthelin we give the preference to the former, his descrip- 

 tion being accompanied by a figure, and his name universally adopted by later 

 ^Titers. In the absence of any reference to the nature of the shell-wall by 

 Terquem, his name, which would otherwise have considerable priority, should, 

 we think, be disregarded. 



TROCHAMMINA, Parker and Jones. 



160. Trochmmnina squaniata, Jones and Parker. 



Trochamminn squaniata, Jones and Parker, 1860, RFM. p. 304, and Table. 



Heron- Allen and Earland. 1914, etc., FKA. 191.5, p. 619. 



Stations 1, 5, 6, 13, 26, 27, 31, 33, 35, 38, 40, 43, 45, 46, 48, 49, 52, 53-55 ( + T. d. F., 

 R. d. J). 



Very generally distributed, the finest and longest series of specimens at 

 Station 6 in the N.Z. area. Both free, and (rarely) sessile. The sessile specimens 

 exhibit extrusions of white cement, as is the habit in ValvuUna fusca (Will.) 

 Very common at many of the Antarctic Stations, notably so at Station 53. 

 Stations 27, 38 and 46 also yielded good series of tests. At Station 48 a 

 specimen was found in which the inferior umbilical recess was filled with a mass 

 of light-coloured cement, showing, however, no indication of any polythalamous 

 development. This may represent the accumulation of material preparatory 

 to the formation of a budding-ofi- individual. At many of the Stations there 

 is practically an imperceptible passage through this form to T. rotaliformis. 



[Hyaline isomorph, Discorbina vilardehoana (d"Orb.) [1), and ValvuUna fusca 

 (Will.).] 



161. Trochammina ochracea (Williamson). 



Rotalina ochracea, Williamson, 1858, RFGB. p. 55, pi. iv, fig. 112, pi. v, fig. 113. 

 Trochammina ochracea, Heron-Allen and Earland, 1914, etc., FKA. 1915, p. 619, pi. xlvi, 



figs. 27, 28. 



Stations 2, 5, 6, 7, 27, 29, 40, 41, 44-47, 50, 52, 47 (+ D.). 



Common at many Stations, well developed at Stations 27 and 41. At Stations 2 

 and 6 it occurs in two forms, (a) the normal, and [b) the widely keeled variety, 



