PORAMINIFEEA OP THE KEPJMBA AECHIPELAGO. 619 



1 Station. 



One minute specimen which exhibits the commencement of the second stage in the 

 formation of the shell, in which the spiral tube takes a turn at right angles to the axis 

 of the earlier coils, and proceeds to enwrap them. 



Trochammina Parker & Jones. 



148. Trochammina squamata Jones & Parker. 



Trochamuiina squamata Jones & Parker, 1860, RPM. p. 304, and Table. 



„ „ Carpenter, Parker, & Jones, 1862, IF. p. 141. pi. xi. fig. 1. 



„ „ Parker & Jones, 1865, NAAF. p. 407, pi. xv. fig. 30. 



„ Brady, 1884, FC. p. 337, pi. xli. fig. 3. 

 Egger, 1893, FG. p. 264, pi. v. figs. 4-6. 

 „ „ Heron-Allen & Earland, 1913, CI. p. 50, pi. iii. figs. 7-10. 



12 Stations. 



Generally distributed and often fairly common. At most of the Stns. where it occurs 

 the specimens are of quite average size, but at Stns. 3 and 12 they were exceptionally 

 large and well grown. They are all of the normal ferruginous tint except at Stn. 1 X, 

 where it is common, small, and nearly white in colour. 



149. Trochammina ochracea (Williamson). (Pi. XLVI. figs. 27, 28.) 



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

 Trochammina squamata Parker & Jones, 1865, NAAF. pi. xv. fig. 31 a-c. 

 ochracea Balkwill & Millett, 1884, FG. p. 25, pi. i. fig. 7. 



Brady, 1884, FC. p. 337-8. 



Millett, 1898, etc., FM. 1899, p. 363, pi. v. fig. 12. 



Heron-Allen & Earland, 1913, CI. p. 51. 



6 Stations. 



Sparingly distributed and rare, except at Stn. 11, where it is relatively abundant. 

 At this Stn. the species presents an extraordinary variety of form, normal specimens 

 both free and attached being found, also a distinctive variety which has unquestionably 

 lived in the attached state, although the numerous specimens observed were all free. 

 The variety is characterized by the possession of a broad and irregular chitinous 

 carina of a grey colour, contrasting strongly with the chambers of the test, which are 

 of the normal ochreous tint. We figure one of these. The same form occurs very 

 rarely at Stn. "? X. 



150. Trochammina plicata (Terquem). 



Patellina plicata Terquem, 1875, etc., APD. 1876, p. 72, pi. viii. fig. 9. 

 Trochammina plicata Balkwill & Millett, 1884, FG. p. 26, pi. ii. fig. 8. 



Halkyard, 1889, RFJ. p. 64, pi. i. fig. 11. 



Millett, 1898, etc., FM. 1899, p. 363, pi. v. fig. 13. 



Heron-Allen & Earland, 1913, CI p. 51. 



