9G "TERRA NOVA" EXPEDITION. 



114. Reophux eunela, Jensen. PL IIL figs. 13, 14. 



Reophax euneta, Jensen, 1905, Proc. Linn. Soc, N.S.W., 1904, pt. 4, p. 821, pi. xxiii, 

 figs. 5-7 (I, h. 



Station 6. 



One large specimen, 5 mm. in length, characterized by abnormal accessory 

 chambers added at the oral extremity, a smaller specimen, and two primordial 

 chambers. The extraordmary regularity with which the spicules are laid parallel 

 with tlie main axis of the test, and their perfection, renders this a most strilving 

 object. The pale brown colour is due to the cement used, which, however, is 

 hardly visible, so small is the quantity employed. The parallel spicules give a 

 striate appearance to the test. Some question might arise whether the spicules 

 are selected or secreted, owing to their abnormal regularity, but an examination 

 in balsam shows that the test is composed of two layers of spicules, the inner 

 layer being laid transversely to the outer, and that Ijroken spicules are utilized 

 as well as perfect ones, especially for the inner layer. The swollen primordial 

 chamber is a very noticeable characteristic, and the test is deeper in colour at 

 this end. The protoplasm is dark in colour, and exists in considerable quantities 

 in all the chambers. The general habit of the shell is generally suggestive of 

 Hormosina, but for reasons stated under that genus we attribute little value to 

 this generic differentiation. 



115. Reophax distans, Brady. 



Reophax distans, Brady, 1879, etc., RRC. 1881, p. 50 ; 1884, FC. p. 296, pi. xxxi, figs. 18-22. 

 Cushman, 1910, rtc. FNP. 1910, p. 85, fig. 119. 



Stations 13, 15, 16, 25, 26-29, 32, 33, 35, 38, 43, 44, 45, 55 (+ D.). 



Confined to the Antarctic but ranging over the whole area. Recognizable frag- 

 ments are all that can be credited to many Stations, but approximately perfect 

 specimens at Stations 27, 29, 32 and 44, at which Stations, judging from the 

 abmidance of fragments, the species nuist have been common. 



See our note under E. spieulifera (var. pseudodistans, Cush.) 



[Porcellanous isomorph, Nubeculdria tibia, J. & P. Hyaline isomorph Nodosaria 

 inflexa, Rss.] 



116. Reophax adunca, Brady. 



Reophax adunca, Brady, 1882, BKE. vol. xi., p. 715 ; 1884, FC. p. 296, pi. xxxi, figs. 23-26. 

 Haeusler, 1890, FST. p. 30, pi. iii, fig. 12. 



Stations 3, 6 ( + D.). 



At these Stations a number of specimens of a minute Reophax were found. In 

 their irregular outline and tendency to vary the line of curvature they suggest 

 a relationship to Brady's form, to which we assign them, although they differ 

 in their minute size from the type, which occurs abundantly in some of our 

 deeper water British material and there attains a large size. 



