Manchester Memoirs, Vol. Ixii. (19 17) 211 



35. Reophax scorpiurus, Montfort. 



Reophax scorpiurus, Montfort, 1808, Conch. Syst. 1, p. 331,. 



83rd genre. 

 R. scorpiurus, Brady, 1884, Chall. Rep., p. 291, pi. XXX, figs. 



12-17. 



Rare and small, the specimens being sometimes com- 

 pressed and not circular in transverse section. May be R. 

 arctica, Brady. 



(Certainly not R. arctica, as suggested by Halkyard, which 

 is a delicate thin-walled linguline form, whereas these are built 

 up of coarse sand grains. Their compressed form is due to 

 their fossil condition.) 



36. Reophax plana, sp. nov. 

 PI. I, figs. 4, 5. 



Test compressed, consisting of two or three sub-dis- 

 coidal chambers arranged in a linear series, each chamber being 

 larger than the preceding one. Texture coarsely arenaceous. 

 Length, 1.15 to 1.55 mm. Breadth, .85 to 1.5 mm. 



Out of the four specimens found only one has three cham- 

 bers and, as will be seen from my drawing is smaller and not 

 so robust as the other three specimens, which had only two 

 chambers each. 



The nearest ally of this new species is Brady's Reophax 

 arctica* which is formed of about eight chambers forming a 

 gradually-tapering test rather pointed at the aboral extremity, 

 and compressed so that the width at any one point is about 

 double the thickness at the same point. 



Goes also figures f a compressed Reophax under the name 

 of R. compress us, which he remarks is nearly related to Haplo- 

 phragmium tenuimargo, Brady. His examples have five or six 

 chambers and an approximately parallel contour. 



(The type specimens have not been found, but the descrip- 

 tion suggests Haplophragmium calcareum Brady or H. pseudo- 

 spirale (Will), certainly not Reophax arctica.) 



* Denkschr. k. Ak. Wiss. Wien, vol. XLIII, 1881, p. 99, pi. 2, fig. 2 and 

 Ann. Mag. Nat. Hist. Ser. V. vol. VIII, 1881, p. 405, pi. XXI, fig. 2. 



t A Synopsis of the Arctic and Scandinavian Recent Marine Foraminifera, 1 894,. 

 Stockholm, p. 27, pi. VI, figs. 203-210. 



