FORAMINIFERA OF THE ATLANTIC OCEAN 25 



species. The typical form at least seems to be most frequent in cool 

 waters. It is very abundant in fairly shallow waters of the north- 

 eastern coast of America and of the coast of Europe. In the tropical, 

 West Indian waters, it does not seem to be present. As so many 

 things are included under this name it does not seem wise to attempt 

 to give a detailed synonymy. 



The types are from the shore sands at Rimini where typical 

 specimens similar to those figured here occur. It occurs also in the 

 Pliocene of Italy. 



QUINQUELOCULINA VULGARIS d'Orbigny 



Plate 2, Figures 3 a-c 



Quinqueloculina vulgaris d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 302, 

 No. 33. — ScHLUMBERGER, M6m. Soc. Zool. France, 1893, p. 207, text figs. 

 13, 14, pi. 2, figs. 65, 66.— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, 

 p. 46, pi. 11, fig. 3. 



Miliolina vulgaris Chapman, Trans. New Zealand Instit., vol. 38, 1905, p. 

 81. — Heron-Allen and Earland, Proc. Roy. Irish Acad., vol. 31, pt. 64, 

 1913, p. 28; Trans. Zool. Soc. London, vol. 20, 1915, p. 569; Trans. Linn. 

 Soc. London, Zool., vol. 11, 1916, p. 212. 



Test short and stout, about as long as wide, in front view orbicular, 

 chambers in transverse section roughly triangular, the periphery 

 bluntly angled, sides straight or slightly convex; sutures distinct; 

 wall smooth; apertural end not contracted or produced; aperture 

 elongate, narrow, with a tooth bifid at the tip, in front view projecting 

 slightly above the border of the aperture. 



Length usually less than 1 millimeter. 



This species is close to Quinqueloculina seminulum (Linnaeus) but 

 is a shorter stouter species with a smooth surface and well-defined 

 sutures. 



It has been recorded from numerous stations on the eastern side of 

 the Atlantic, but not fromx the West Indies or the eastern coast of 

 the United States. 



QUINQUELOCUUNA (?) SUBROTUNDA (Montagu) 



Plate 2, Figure 4 



"Serpula subrotunda dorso elevato " Walker and Boys, Test. Min., 1784, 

 p. 2, pi. 1, fig. 4. 



Vermiculum subrotundum Montagu, Test. Brit., 1803, pt. 2, p. 521. 



Quinqueloculina subrotunda d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 302. — 

 H. B. Brady, Nat. Hist. Trans. Northumberland and Durham, vol. 1, 

 1865, p. 94, pi. 12, fig. 2. 



Miliolina subrotunda Fischer, Actes Soc. Linn. Bordeaux, vol. 27, 1870, p. 

 386. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 168, 

 pi. 5, figs. 10, 11. — Heron-Allen and Earland, Proc. Roy. Irish Acad., 

 vol.31, pt. 64, 1913, p. 26; Trans. Linn. Soc, Zool., vol. 11, 1916, p. 209. 



Test generally circular in front view, compressed, periphery rounded ; 

 chambers quinqueloculine or in the adult spreading and more or less 

 31569—29 3 



