Chapman. — On some Foraminifera and Ostracoda. 83 



Family ASTKORHIZIM]. 



Subfamily AsTKOKHiziNiE. 



Genus Pelosina, Brady. 



Pelosina cylindrica, Brady. 



Pelosina cylindrica, Brady, 1884, Eep. Chall., vol. ix, p. 236, 

 pi. xxvi, figs. 1-6. 



The occurrence of this species at a depth of only 110 fathoms 

 is interesting, since in the "Challenger" dredgings it was 

 an essentially deep-water form ; the least depth at which it 

 was found was 620 fathoms. It was also recorded from the 

 "Challenger" station 169, in 700 fathoms. The "Gazelle" 

 •expedition obtained this species, however, at 82-86 meters 

 (44 to 47 fathoms), from Western Australia. 



Our specimens are typical, and of the normal size. The 

 walls of the test are formed of a fine grey calcareous mud. 

 Somewhat common. 



Pelosina variabilis, Brady. 

 Pelosina variabilis, Brady, 1879, Quart. Journ. Micr. Sci., 



vol. xix, n.s., p. 30, pi. iii, figs. 1-3. 



This interesting form is rare in our series. It was found 

 in the "Challenger" dredgings at station 169, near to the 

 present locality, at a depth of 700 fathoms. 



Pelosina rotundata, Brady. 



Pelosina rotundata, Brady, 1879, Quart. Journ. Micr. Sci., 

 vol. xix, n.s., p. 31, pi. iii, figs. 4, 5. 



The specimens found in our samples are not so evenly 

 shaped as usual, but there seems to be no doubt of their iden- 

 tity with the above species. 



The " Challenger" soundings from near this locality have 

 yielded the same species at a depth of 700 fathoms. 



Subfamily Rhabdamminin^:. 



Genus Brachysiphon, gen. nov. 



(Deriv. — ftpa-x^* snort > a-itjaav, a tube). 



Generic Characters. — Test tubular, short, open at both 



ends or closed at one ; consisting of an inner chitinous tube 



incrusted with sand-grains or small foraminiferal tests, as 



Globigerma, in the only species at present known. Aperture 



more or less circular, bordered by the thickened chitinous 



lining of the interior. 



