382 Transactions of the Society. 



VIII. — On Some Foraminifcra from the North Sea, etc., dredged 

 hy the Fisheries Cruiser ' Goldseeker ' {International North Sea 

 Investigations — Scotland). I. On Some Neiu Astrorhizidm and 

 their Shell -str Picture. 



By Edward Heron-Allen, F.L.S., F.R.M.S., 

 and Arthur Earland, F.E.M.S. 



{Read Jimc 19, 1912.) 

 Plates V. and VL 



Family Astrorhizidse. 



Sub-family Pilulinin^. 



Technitella Norman. 

 Technitelki legumen Norman. 



Technitella legumen Norman, 1878, Ann. Mag. Nat. Hist. ser. v. vol. i. p. 269/ 



pi. xvi. figs. 3, 4. 

 Ditto. (Norman) Brady, 1884, Foram. ' Challenger,' p. 246, pi. xxv. figs. 8-12. 

 Ditto. (Norman) Heron-Allen and Earland, 1909, Journ. Quekett Micr. Club, 



ser. ii. vol. x. pp. 406, 408, 412, pi. xxxiv. fig. 10. 



We take the present opportunity of figuring for the first time 

 the method of construction in this species, as it represents, in 

 our opinion, the acme of " selective power " in the Foraminifcra. 

 It was briefly alluded to in our paper published in 1909 (suprcl). 



The original description of the species, as given by Norman, 

 states that the shell wall " . . . is beautifully built up of the 

 fragments of minute acerate spicula, laid in regular order side 



EXPLANATION OF PLATE V. 



—Technitella legumen Norman. Showing external surface of test. 



Ditto. Section of test, showing internal surface. 

 — Psammosphxra rustica sp. n. 



Ditto. Abnormal double specimen. 

 — Fsavimosphsera Bowmanni sp. n. Side view. 



Ditto. End view. 

 — Marsipella sjnralis sp. n. 

 — Marsi2)eUa cylindrica Bradv. 



Ditto. A fragment of a specimen, showing a spiral arrangement of the 

 constituent sponge-spicules. 



Note.— AM the figures in this plate are drawn from opaque specimens 

 to a magnification of 40 diameters. 



