36 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM 



In the West Indian region this species is the least common of all 

 those recorded when actual material is studied. The d'Orbignyan 

 species, P. elegans, seems to be identical with this species as commonly 

 understood. He recorded it from Cuba and Jamaica. I have re- 

 corded it from Jamaica, Porto Rico, and the Tortugas, and it occurs 

 at Habana. In the Indo-Pacific region and in the Mediterranean 

 this species is often abundant. 



Peneroplis pertusus — Material examined 



PENEROPLIS CARINATUS d'Orbigny 



Plate 12, figures 7-10; Plate 14, figure 1 



Peneroplis carinatus d'Orbigny, Voy. Am6r. M^rid., vol. 5, pt. 5, 1839, 

 "Foraminiferes," p. 33, pi. 3, figs. 7, 8. — H. B. Brady, Rep. Voy. Chal- 

 lenger, Zoology, vol. 9, 1884, p. 205, pi. 13, fig. 14. — Heron-Allen and 

 Earland, Trans. Zool. Soc. London, vol. 20, 1925, p. 602. — Cushman, Bull. 

 100, U. S. Nat. Mus., vol. 4, 1921, p. 482; Proc. U. S. Nat. Mus., vol. 59, 

 1921, p. 75, pi. 18, fig. 12; Publ. 311, Carnegie Inst. Washington, 1922, 

 p. 79. — Heron-Allen and Earland, Journ. Linn. Soc. Zool., vol. 35, 

 1924, p. 610; Trans. Zool. Soc. London, vol. 22, 1926, p. 69, (Ust). 



Peneroplis pertusus, var. carinatus Cushman, Bull. 71, U. S. Nat. Mus., pt. 

 6, 1917, p. 87, pi. 37, fig. 4. 



Test close coiled, completely involute, periphery subacute; 

 chambers 12 to 15 in the adult coil, low and broad, distinct; sutures 

 distinct, depressed, not limbate; wall smooth, not striate; aperture 

 a series of pores in the central portion and toward the base of the 

 apertural face. 



D'Orbigny 's original locality was "not far from the mouth of the 

 Rio Negro, Patagonia," where it was rare. Specimens from various 

 regions have been referred to this species, but in the material I have 

 had from the West Indian region, it is very rare and did not occur 

 at all in the abundant Bermuda material I have had. 



