SPIRILLININAE 405 



320. Spirillina vivipara var. revertens, Rhumbler. 



Spirillina vivipara (pars) Brady, 1884, FC, pi. Ixxxv, fig. 5 (only). 



Spirillina vivipara var. revertens, Rhumbler, 1906, FLC, p. 32, pi. ii, figs. 8-10. 



Spirillina vivipara var. revertetis, Cushman, 1910, etc., FNP, 1915, p. 4, pi. i, fig. 3-6. 



Four stations: 48, 388; WS 88, 245. 



Occasional specimens, the best at 388 and WS 88. 



321. Spirillina obconica, Brady. 



Spirillina obconica, Brady, 1879, etc., RRC, 1879, p. 279, pi. viii, fig. 27; 1884, FC, p. 630, 



pi. Ixxxv, figs. 6, 7. 



Spirillina obconica, Heron-Allen and Earland, 1913, CI, p. 108, pl. ix, figs. 8, 9. 



Two stations : 388; WS88. 



One or two specimens only at each station, very fine at 388. 



321 A. Spirillina obconica, Brady, var. carinata, Halkyard. 



Spirillina obconica var. carinata, Halkyard, 1889, RFJ, p. 71, pl. ii, fig. 6. 



Spirillina obconica var. carinata, Heron-Allen and Earland, 1913, CI, p. 108, pl. ix, figs. 6, 7. 



Spirillina lateseptata, Cushman, 1918, etc., FAO, 1931, p. 6, pl. i, figs. 12, 13, pi. ii, fig. i. 



One station: 388. 



A single rather weak specimen. Cushman (tit supra) has referred this very character- 

 istic Httle form to Spirillina lateseptata Terquem (T. 1875, APD, p. 21 , pl. i, fig. 6). But 

 whatever the nature of Terquem's organism, we do not think it can be identical with 

 Halkyard's. Terquem gives the dimensions of his species as o-8o mm. x 0-84 mm. 

 which for a Spirillina is enormous. Only the giant species S. tuberciilata ever attains 

 such dimensions. The largest specimen of the series of var. carinata in our collection 

 measures only 0-31 mm. in greatest diameter, and the average is much less. 



322. Spirillina decorata, Brady. 



Spirillina decorata, Brady, 1884, FC, p. 633, pi. Ixxxv, figs. 22-5. 

 Spirillina decorata, Sidebottom, 1904, etc., RFD, 1908, p. 8, pl. ii, fig. 6. 



One station: WS 88. 



Represented by a single rather doubtful specimen. 



323. Spirillina margaritifera, WiUiamson. 



Spirillina margaritifera, Williamson, 1858, RFGB, p. 93, pl. vii, fig. 204. 

 Spirillina margaritifera, Heron-Allen and Earland, 1930, FPD, p. 180. 



One station: WS 88. 



Two specimens only which agree with Williamson's figure. It still remains an open 

 question whether Williamson's form is anything more than a pauperate condition of 

 S. tuberciilata . See our observations lit supra. 



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