350 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



Rotalia soldanii — Material examined. 



ROTALIA CALCAR (d'Orbigny). 



Plate 71, figs. 3a, b. 



Calcarina calcar d'Orbigny, Ann. Sci, Nat., vol. 7, 1826, p. 276, No. 1; in De la 

 Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, "Foraminif feres," p. 93, pi. 5, figs. 22-24. 



Rotalia calcar H, B. Bbad-v, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 709, 

 pi. 108, fig. 3, fig. 4?— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 5, 1915, p. 69, 

 pi. 28, fig. 2; pi. 29, fig. 2. 



This species, which is characteristic of shallow water of coral- 

 reef regions, is abundant under similar conditions in the Philippine 

 Archipelago. Some specimens resemble those figured by Brady; 

 others have longer extensions on the margins of the chambers and 

 become more like Calcarina. It is usually associated with Calcarina, 

 and there is some question whether or not it should be included in 



that genus, 



Rotalia calcar — Material examined. 



Genus CALCARINA d'Orbigny, 1826. 



Nautilus (part) Linnaeus, Syst. Nat., ed. 13 (Gmelin's), 1788, p. 3371. 

 Calcarina d'Orbignt, Ann. Sci. Nat., vol. 7, 1826, p. 276 (type, Nautilus spengleri 

 (Linnaeus)). 



Description. — Test rotaliform throughout, chambers numerous, 

 close-coiled, biconvex; periphery with radiating spines; chambers of 

 the last-formed coil visible on the ventral side, those of the dorsal 



