LOFTUSINAE— TEXTULARIINAE 347 



A single specimen found at St. 388 off Cape Horn is probably referable to our species. 

 It differs from the original types in the absence of the basal anchoring spicules and a 

 lesser display of selective power, the basal half of the test being constructed rather 

 roughly of sand grains and cement, the upper half being constructed of spicules 

 regularly arranged in vertical rows. 



The specimen figured by Cushman from Samoa {lit supra) has a somewhat similar 

 agglutinate base, but with a single anchoring spicule. Our record marks a wide extension 

 of the range of the species. 



Sub-family LOFTUSINAE 

 Genus Cyclammina, Brady, 1876 



114. Cyclammina cancellata, Brady. 



Cyclammina cancellata, Brady, 1879, etc., RRC, 1879, p. 62 (Nautiloid Lttuola); 1884, FC, 



P- 351. Pl- xxxvii, figs. 8-16. 



Cyclammina cancellata, Cushman, 1910, etc., FNP, 1910, p. no, figs. 168-171. 



Seven stations: 228; WS 76, 99, 215, 245, 408, 433. 



Occurs in both micro- and megalospheric forms, the latter only at WS 245. The 

 microspheric specimens are very noticeable owing to their grey colour and polished 

 surface, in which a minimum quantity of sand grains are imbedded in fine cement. In 

 rare cases the sand grains are so few in number as to be barely noticeable. At WS 99, 

 specimens of similar construction, but ferruginous in colour, occur; the best examples at 

 WS 215, 433. 



Family TEXTULARIIDAE 



Sub-family TEXTULARIINAE 



Genus Spiroplectammina, Cushman, 1927 



115. Spiroplectammina biformis (Parker and Jones) (Plate VIII, figs. 27-31). 



Textularia agghitinans var. biformis, Parker and Jones, 1865, NAAF, p. 370, pi. xv, figs. 23, 24. 

 Textularia biformis, Brady, 1878, RRNP, p. 436, pi. xx, fig. 8. 

 Spiroplecta biformis, Brady, 1884, FC, p. 376, pi. xlv, figs. 25-7. 

 Spiroplectammina biformis, Cushman, 1925, etc., LFR, 1927, ni, p. 23, pi. v, fig. i. 



Twelve stations: 388; WS 76, 77, 88, 90, 98, 109, 210, 215, 217, 225, 246. 



Often very common, especially at WS 76. At most of the stations two distinct forms 

 occur, one characterized by a small and outstanding crozier-shaped initial portion 

 followed by a long series of biserial chambers regularly broadening. In the other, the 

 crozier portion is much larger, and it is less prominent because it is immediately followed 

 by a short series of biserial chambers all of approximately the same breadth as the initial 

 spiral. These two forms represent respectively the micro- and megalospheric forms. The 

 Falkland type is as a rule much more compressed than the usual run of specimens in 

 northern waters. Highly compressed specimens at WS 88, 90, 98 and 246. At WS 217, 

 where the species is common, the microspheric form predominates. 



