332 DISCOVERY REPORTS 



Genus Hyperammina, Brady, 1878 



71. Hyperammina friabilis, Brady. 



Hyperammina chngata (pars), Brady, 1878, RRNP, p. 433; 1879, etc., RRC, 1879, p. 32. 

 Hyperammina friabilis, Brady, 1884, FC, p. 258, pi. xxiii, figs. 1-3, 5, 6. 



Seven stations: WS 76, 80, 99, 109, 225, 229, 408. 



With the exception of single very large specirnens at WS 80 and WS 229, the speci- 

 mens are very small. Most common at WS 109, but the best individuals at WS 80 and 

 408. 



72. Hyperammina elongata, Brady. 



Hyperammina elongata (pars), Brady, 1878, RRNP, p. 433, pi. xx, figs. 2 a,b; 1884, FC, p. 257, 

 pi. xxiii, figs. 4, 7-10. 



Hyperammina elongata, Balkwill and Wright, 1885, DIS, p. 328, pi. xiii, fig. 4. 

 Two stations: WS 215, 225. 



A good many fragments and a few perfect specimens at WS 225. They resemble the 

 specimens figured by Balkwill and Wright {ut supra) in their somewhat roughly and 

 loosely agglutinated tests. 



73. Hyperammina laevigata, Wright. 



Hyperammina elongata var. laevigata, Wright, 1891, SWI, p. 466, pi. xx, fig. i. 

 Hyperammina elongata var. laevigata, Cushman, 1910, etc., FNP, 1910, p. 61, fig. 75. 

 Hyperammina laevigata, Cushman, 1918, etc., FAO, 1918, p. 77, pi. xxix, fig. 5, 6. 

 Hyperammina elongata var. laevigata, Heron-Allen and Earland, 1922, TN, p. 88. 



Three stations: WS 215, 408, 433. 



A perfect specimen at WS 408 and fragments at the other stations. 



74. Hyperammina clavigera, sp.n. (Plate VII, figs. 12-15). 

 One station: W'S 246. 



The test is very neatly constructed, principally of broken sponge spicules, occasionally 

 including a few large sand grains or mineral flakes, and is firmly consolidated with little 

 visible cement. It commences with a swollen proloculum which, owing to the rigid 

 nature of the material employed, is often very irregular in shape and dimensions. The 

 proloculum tapers gradually into a long narrow tube of uniform diameter composed of 

 the same materials. The spicules are arranged either longitudinally or spirally. In the 

 latter case the spiral arrangement tends to produce a curved tube, which in extreme 

 instances may itself exhibit a distinct spiral twist. 



Length of largest specimen found with proloculum, 3-40 mm. Diameter of tube 

 ranges between o-io and 0-15 mm. Diameter of proloculum ranges between 0-25 and 

 0-40 mm. 



Larger fragments without a proloculum have been found, but in its absence cannot be 

 distinguished with certainty from Marsipella cylindrica, Brady. 



The nearest relative of H. clavigera is possibly H. laevigata, Wright, to which it bears 



