TROCHAMMININAE 343 



A single specimen of the megalospheric form (A. tenuis, B. 1884, FC, pi. xxxviii, 

 figs. 4-6) at WS 88, consisting of a proloculum and a single coil, and a slightly larger 

 specimen at 388. The entire absence of the megalospheric form at the other stations is 

 noteworthy. 



The Opercidina incerta of d'Orbigny has always seemed to us to be open to suspicion 

 as an arenaceous form. Neither the figure nor the text give us any suggestion of an 

 agglutinate test, and either might equally well refer to a weather-stained Spirilliiia or 

 Cormispira. We therefore turned to the Paris Type in the hope of settling the question 

 of its nature, only to find ourselves confronted with an apparent blank wall. The tube 

 contains three specimens. It is labelled " SpirilUna incerta (Operculina), Cuba ". None of 

 the three specimens can be recognized as the original of d'Orbigny's figure and they are 

 all unmistakably Cormispira. One is C involvens, Reuss, the second probably the same 

 but bearing striolations (these may be accidental), the third specimen is a narrow-tubed, 

 square-edged form, suggesting C. angigyra, Reuss ; they are all unmistakably fossils. The 

 uncertainty is insoluble until d'Orbigny's original Cuba Type is perhaps identified among 

 the tubes which have become separated from any identifying "boards". 



Genus Glomospira, Rzehak, 1885 



Note. The date of the genus Glomospira is generally given as 1888, in which year the 

 name Ammodiscus [Glomospira) gordialis figures in a list of species (Verh. k. k. geol. 

 Reichanst. Berlin, 30 June, 1888, p. 191). But the genus appears to have been perfectly 

 well defined in Rzehak's paper on certain Oligocene Foraminifera in 1885 {Verh. Naturf. 

 Vereines. Bninn, xxiii (1885), p. 127) in which he separates the piano-spiral from the 

 globular (knauel-formig = ball-of- wool-shaped) forms. 



102. Glomospira gordialis (Jones and Parker) (Plate VIII, figs. 21, 22). 



Trochaminina squamata gordialis, Jones and Parker, i860, RFAI, p. 304. 

 Ammodiscus aordialis, Brady, 1884, FC, p. 333, pi. xxxviii, figs. 7-9. 

 Ammodiscus {Glomospira) gordialis, Rzehak, 1888 (see Note above). 



Eight stations: 53 ; WS 71, 80, 88, 90, 217, 225, 246. 



The majority of the specimens are small, grey in colour like A. incertiis, but large 

 ferruginous examples were found at WS 225. It occurs sessile on shell fragments at 

 WS 246. It is never as common as A. incertus, the best (of the grey type) at WS 88. 



103. Glomospira charoides (Jones and Parker). 



Trochammina squamata charoides, Jones and Parker, i860, REM, p. 304. 



Ammodiscus charoides, Prady, 1884, EC, p. 334, p]. xxxviii, fig. 10-16. 



Glomospira charoides, Rhumbler, 1909, etc., EPE, 1913, p. 422, pi. iv, fig. 8 (1909). 



One station: WS 86. 

 A single example much eroded at WS 86 



