24 BULLETIN 10 4, UNITED STATES NATIONAL MUSEUM 



This species seems to be common especially under brackish-water 

 conditions about the British Isles although there are records for it 

 also from the Indo-Pacific. Nothing referable to it has been noted 

 in the western Atlantic. 



It has been recorded about the British Isles at numerous stations 

 in brackish water (Brady); Galway (Balkwill and Millett); off the 

 Dublin coast (Balkwill and Wright); River Dee (Siddall); Jersey 

 (Halkyard); Portree Bay (Robertson); off Southport (Chaster); 

 shore sand, Bognor, Sussex (Earland); Selsey Bill, Sussex; Clare 

 Island region, Ireland; west of Scotland (Heron-Allen and Earland). 



The figures are from the type figures of Brady. 



QUINQUELOCUUNA SCLEROTICA Karrer 



Plate 1, Figures 5 a-d 



Quinqueloculina sclerotica Karrer, Sitz. Akad. Wiss. Wien, vol. 58, abth. 1, 

 1868, p. 152, pi. 3, fig. 5.— CtJSHMAN, Proc. U. S. Nat. Mus., vol. 56, 

 1919, p. 636; Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 441. 



Miliolina sclerotica Balkwill and Millett, Journ. Micr., vol. 3, 1884, p. 24, 

 pi. 1, fig. 2. — Heron-Allen and Earland, Proc. Roy. Irish Acad., vol. 31, 

 pt. 64, 1913, p. 30; Trans. Linn. Soc. London, ZooL, vol. 11, 1916, p. 213. 



Test very similar to Q. contorta, but the exterior coated with 

 arenaceous material, often of rather coarse grains. 



This species has been recorded from the European side of the 

 Atlantic, especially about the British Isles but not from the American 

 side. 



The figured specimen is from Balkwill and Millett. 



SPECIES WITH SMOOTH SURFACE AND ROUNDED PERIPHERY 



quinqueloculina SEMINULUM (Linnaeus) 



Plate 2, Figures 1, 2 



" Conchula minima arete in se contorta, etc." Plancus, De Conchis min. 



not., 1739, p. 19, pi. 11, fig. 1 A, B, C. 

 " Tubulus marinus inregulariter intortus vermicularis " Gualtieri, Index 



Test., 1742, pi. 10, fig. S. 

 Serpula seminulum Linnaeus, Syst. Nat., ed. 12, 1767, p. 1264. 

 Quinqueloculina seminulum d' Orbignt, Ann. Sci. Nat., vol. 7, 1826, p. 303. 

 Miliolina seminulum Williamson, Rec. Foram. Great Britain, 1858, p. 85, 



pi. 7, figs. 183-185. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 



1888, p. 157, pi. 5, fig. 6. 



Test longer than wide, greatest width near the middle, chambers 

 distinct, of nearly uniform diameter, periphery rounded; sutures dis- 

 tinct, very slightly depressed; wall smooth, polished; aperture large, 

 with a simple tooth. 



Length up to 1 millimeter or more in larger cold-water specimens. 



This is a very common species according to the published records 

 but many of the figures given do not fit the earlier ones of this 



