F()|;a.miniI''i;i;.\ iii-'.ijox-allen ani> iiaklanh. iori 



Family ROTALIIDAE. 

 Sun-FAMiiA- SPIRILLININAE. 



SPIRTLLINA. Rlirenl)oro. 



4!i;i. Spinlliiia viripani. l^jluoiilioro;. PI. VIT. Fig. 4. 



SpirilUiia rli'ip(ii<(. Ehi'ciibcr};, l.Sll, 8NA. )). 1-12. pi. iii. fii;. II. 



Heron-Allen and Earland. 191 1. etc., FKA. 191.5, ji. 68.3, pi li, figs. ]9-'2.3. 



Stations 2, 4, 6. 31, 38, 45, 47. 53. 55 (+ R. d. J., D.). 



Absent from all (lee])-\vater Stations, Init otherwise generally distributed. At 

 Station 2 specimens attached to stones, and also examples of a curious and pretty 

 variety characterized by a dome-shell with a single row of perforations (?) 

 following the middle line of the tube, giving a decorate appearance to the shell, 

 but otherwise typically S. vnnpara. This compares in some respects with Chap- 

 man's S. decorata. var. uiiilatera (C.. 1901, etc., FFA. 1902, p. 410,' pi. xxxvi, 

 fig. 17). At Station 6 in addition to the best series of the normal type, Rhumbler's 

 var. revertens occurs (R.. 1906. FLC. p. 32. pi. ii, figs. 8-10). in which the oral end 

 of the tube is imperceptilily turned in and fused with the precedhig wliorl, so 

 as to show no demonstrable aperture. At the S. Polar Stations 45, 53 and 55, 

 all the specimens represent a convex and dome-like type. At Station 53 one speci- 

 men is attached to a Zoophyte, and another free specimen of this type has 

 three young individuals inside the concave base of the shell, each of the young 

 showing a primordial chamber niid one complete spiral. 



[Porcellanous isomorph, Cornuspira vHVohens, Reuss, and foJiacra (Phil.). Arena- 

 ceous isomorph, Ammodiscus incertus, d"Orb., and teimis, Bi'ady.j 



494. Spirillina obconica, Brady. 



SpiriUina ohcoiricn, Brady, 1879, etc., RRC. 1879. ]i. 279. y]. viii, fig-. 27 : 1884, FC. p. 630, 

 pi. Ixxxv, fig.s. 6, 7. 

 Heron-Allen and Earland. 19U. etc.. FKA. 1915. p. 683. 



Stations 2, 6. 20, 31, 53, 55. 



Widely scattered records. Remarkably good at Stations 26 and 31, a very 

 fine attached specimen of very decorate appearance, owing to the regular spacing 

 of the perforations along the tube at Station 2. The remaining specimens small. 



[Porcellanous isomor]>h, Cornuspmi poh/fii/ra. Reuss. fide Hautken (H.. 1875. 

 CSS. p. 19, pi. ii, fig. 1).] 



495. Spirillina obconica, var. carinata, Halkyard. 



Sjiin'Uiiia n'rijiara, var. curiiuild. Halkvard, 1889, RF.l. ]). 69, ])1. ii. fig. 6. 



ohcoiiica Heron-Allen and Earland. 1916. FWS. p. 269. 



Stations 53, 55. 



Several fine examples at our soutliernmost limit. 



2 c 2 



