FORAMINIFERA OF THE ATLANTIC OCEAN 



55 



BOREUS PULCHRA (d'Orbigny) 



Plate 15, figures 9, 10 



Alveolina pulchra d'Orbigny, in De la Sagra, Hist. Fis. Pol. Nat. Cuba, 1839, 

 "ForaminifSres." p. 70, pi. 8, figs. 19, 20.— Cushman, Proc. U. S. Nat. 

 Mus., vol. 59, 1919, p. 77, pi. 19, figs. 7-9; Publ. 311, Carnegie Instit. 

 Washington, 1922, p. 82. 



Alveolina melo (part) (not Fichtel and Moll), H. B. Brady, Rep. Voy. Chal- 

 lenger, Zoology, vol. 9, 1884, p. 223, pi. 17, figs. 14, 15.— Woodward, The 

 Observer, vol. 4, 1893, p. 78. 



Test small, completely involute, globular or slightly fusiform; 

 chambers distinct, usually four in a coil, divided into elongate cham- 

 berlets but the chamberlets not again subdivided, growing edge low 

 and connecting the two umbilici; wall imperforate, milky-white; 

 apertures consisting of a single row of rounded pores, one to each 

 chamberlet, in the apertural face. 



Diameter, 0.45 mm. 



This species is rare in the West Indian region. Brady gives the 

 West Indies, Bermuda, and Cape Verde Islands for Atlantic localities. 

 D'Orbigny's types are from Cuba. I have collected it on the north 

 coast of Jamaica, at a few stations in the Tortugas region, and at 

 Bermuda. 



So far as I have seen, material from the Indo-Pacific, the material 

 to be referred to Borelis melo (Fichtel and Moll), is definitely larger 

 and usually has more chambers in the coil. 



Borelis pulchra — Material examined 



Genus ALVEOLINELLA H. Douville, 1906 



Alveolinella H. Douville, Bull. Soc. G^ol. France, ser. 4, vol. 6, 1906, p. 



585. — Cushman, Special Publ. No. 1, Cushman Lab. Foram. Res., 1928, 



p. 227. 

 Alveolina (part) d'Orbigny, 1826. 



Genoholotype. — Alveolina quoyi d'Orbigny. 



Test fusiform, planispirally coiled about an axis, all coils low; 

 apertures very numerous, in several rows. 

 Recent. 



