14 MU. F. CHAPMAN ON SOME [Jail. 15, 



Ehabdammina, M. Sars. 



49. Ehabdammina discreta, Brady. 



liliaJnhnnmina discreta, Brady, 1884, Cliall. Rep. vol. ix. p. 268, 

 pi. xxii. figs. 7-10. 



Found in Sample No. 1, very rare ; iS'o. 4, frequent ; No. 6, 

 very rare. 



Rhizammina, H. B. Brady. 



50. EniZAMMiNA INDITISA, Brady. 



Khizammina indivisa, Brady, 1884, Chall. Eep. vol. ix. p. 277, 

 pi. xxix. figs. 5-7. 



Found in Sample No. 1, very rare ; No. 4, common ; No. 5, very 

 rare. 



Eeophax, Montfort, 



51. Eeopjiax uiFi'LtrGiFORMis, Brady. 



lleopluuv difflugiformis, Brady, 1884, Chall. Eep. vol. ix. p. 289, 

 pi. XXX. figs. 1-5. 



The tests of these specimens from the Arabian Sea are com- 

 posed of tiny embryonic globigerine shells in all cases excepting 

 that from Sample No. 1, in which the specimen is composed of 

 sandy and spicular material. 



Found in Sample No. 1, very rare; No. 4, very rare; No. 5, 

 very rare ; No. 6, very rare. 



52. Eeophax scokpiueus (^Montfort). 



Reoplmx scorpiw-vs, Brady, 1884, Chall. Eep. vol. ix. p. 291, 

 pi. XXX. figs. 12-17. 



It is posf^ible that one of the specimens referred to the above 

 species, that from Sample No. 1, more properly belongs to 11. 

 arctica, Brady, since it has the usual tapering shell but strongly 

 compressed. It differs, however, from the typical Ji. arctica in being 

 quite as large as the well-known R. scorpiurus. The other speci- 

 mens met with are of the ordinary type form. 



Found in Sample No. 1, very rare ; No. 4, frequent ; No. 6, 

 frequent. 



53. Eeophax spiculifeka, Brady. 



Reopliax spicidifera, Brady, 1884, Chall. Eep. vol. ix. p. 295, 

 pi. xxxi. figs. 16, 17. 



The usual form of this species has more or less cylindrical 

 chambers ; but some of the specimens from the Arabian Sea show 

 a tendency to pass over into the form of li. nodulosa, Brady, whilst 

 retaining the spicular test. It is therefore difficult to determine 

 to which of the two above-mentioned species some of the specimens 

 belong ; the cylindrical form of the segments is here taken as the 

 distinguishing character irrespective of the nature of the test. 



