ON THE FORAMINIFERA OF THE FAROE CHANNEL. 171 



after passing the Faroe Channel going south, and 

 become nearly, if not quite, absent after passing 

 south of latitude 55° N. 



Amongst the arenaceous Foraminifera found in 

 the Faroe Channel were many very interesting 

 forms, among which may be mentioned Syringam- 

 mina and Bathy siphon, one species of Stoi'thospluera, 

 and three species of Sorosphcera, which, on further 

 examination, may turn out to be new to science. 



Of the genus Hyperammina, a very interesting 

 form has been taken from the warm area, which 

 I here describe under the provisional name of 

 Hyperammina palmiformis.* 



H y P e r A M M I N A , H. B. Brady. 



Hyperammina palmiformis, n. sp. 



Test free, erect, elongate, subcylindrical, tapering somewhat 

 sharply, straight till it becomes a cylindrical tnbe of nearly 

 uniform diameter; distal extremity forming a tuft of fine 

 branched chitino-arenaceous tubes, with a strong chitinous 

 lining throughout, filled more or less with a greenish-brown 

 sarcodic matter ; primordial end closed and rounded ; internal 

 cavity commencing with a broad simple chamber, narrowing 

 till it becomes a continuous tube, usually attaining about 

 seven millimetres in height before dividing into numerous 

 tubular branches of a uniform diameter internally, till near 

 the ends, when they slightly taper off, each terminating in a 

 minute rounded aperture ; walls moderately thick ; texture 

 externally, coarsely arenaceous ; colour reddish-brown or grey. 

 In the dry state it has a grey colour, owing to the numerous 

 Globigerince and fragments of other calcareous organisms it 

 selects to ornament its test ; especially is this the case in the 

 branched arborescent distal extremity, where the Globigerince, 

 &c, are much more numerous than on the base. Length, {-& inch 

 (16 or 17 mm.). 



This form differs from all the other known species 

 of Hyperammina in having a strong chitinous 

 lining to which the extraneous material is firmly 

 cemented; and instead of the marked subglobular 

 primordal chamber characteristic of this genus, it is 



* From the bulging out of the base, and its branched arborescent 

 distal extremity, resembling several species of palms — e.g., Livis- 

 tona chinensis, Mart., or Coryplias australis, R.B. 



