62 



BULI^TIN 104, UNITED STATES NATIONAL MUSEUM. 



Distribution. — This is a common species about the British Isles, 

 and except for the single record of Heron- Allen and Earland/*^ who 

 record a single specimen from the Kerimba Archipelago, off the 

 southeastern coast of Africa, all the other records are from British 

 or adjacent waters, although one of Goes's records is from off Spitz- 

 bergen, but he does not figure specimens. I have specimens in my 

 collection from the localities given in the table. There have been no 

 specimens in the western Atlantic material which could be referred to 

 this species. 



Lagena tcilUamsoni — material examined. 



Subfamily 2. Nodosariinae. 



Test polythalamous ; chambers arranged in a straight, arcuate, 

 planospiral or uncoiling series; apertures either radiate or with a 

 neck and phialine lip. 



Genus NODOSARIA Lamarck, 1812. 



Nodosaria Lamakck (type N. raphanistrum (Linnaeus)), Extrait Cours 

 Zool., 1812, p. 121 ; Hist. Anim. Sans. Vert., vol. 7, 1822, p. 596.— H. B. 

 Bkady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 488. — Chapman, 

 The Foraminifera, 1902, p. 188. — Cushman, Bull. 71, U. S. Nat. Mus., 

 pt. 3, 1913, p. 46. 



Description. — Test composed of a straight or arcuate series of 

 chambers, either loosely joined together by stolons or close set and 

 overlapping or various forms between; surface smooth or orna- 

 mented; aperture either radiate or with a definite neck and phia- 

 line lip. 



As indicated in the introduction, there are two more or less dis- 

 tinct groups which are placed under this genus. In one the aperture 

 is radiate, in the other it has an elongate neck and phialine lip. 

 Usually those forms which have the radiate aperture have compara- 

 tively thick heavy tests; those with the neck and phialine lip more 

 often have the thin hyaline test. In both groups both microspheric 

 and megalospheric forms occur. Where the proloculum is megalo- 



« Trans. Zool. Soc. London, vol. 20, 1915, p. 659. 



