rORAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 265 

 POLYMORPHINA PROBLEMA d'Orbigny, var. INDICA, new variety. 



Plate 52, figs. 1, 2; plate 53, figs, la, b. 



Description. — Test large, broad, chambers comparatively few and 

 thick-walled; sutures distinct but only slightly depressed; earlier 

 chambers and the posterior half of the later ones with fine longitu- 

 dinal costae, apertural end broadly rounded; aperture radiate. 



Length up to 2.2 mm. 



Distribution. — Type specimen (Cat. No. 16056, U.S.N.M.) from 

 Albatross station D5579, vicinity of Darvel Bay, Borneo, in 175 

 fathoms (320 meters). 



Several specimens were dredged at this station, all of this large 

 robust variety, with partially ornamented chambers. 



Pohjmorphina prohlema, var. indica — Material examined. 



POLYMORPHINA SORORIA Reuss. 



PohjmorpJmia (GuttuHna) sororia Reuss, Bull. Acad. Roy. Belg., ser. 3, vol. 15, 



1863, p. 151, pi. 2, figs. 2.5-29. 

 Polymorphina sororvi H. B. Brady, Rep. Voy. Challenger. Zoology, vol. 9, 18S4, 



p. 562, pi. 71, figs. 15, 16.— GusHMAN, Bull. 71, U. S. Nat. Mus., pt. 3, 1913, p. 



88, pi. 30, fig. 3. 



The only station at which specimens of this species were found is 

 D5268, between Verde Island Passage and Batangas Bay, in 170 

 fathoms (311 meters). 



Polymorphina sororia — Material examined. 



POLYMORPHINA LACTEA (Walker and Jacob). 



"Serpula tenuis ovalis laevis" Walker and Boys, Test. Min., 1784, p. 2, pi. ], 



fig. 5. 

 "Polymorpha suhcordiformia vol oviformia" Soldani, Testaceographia, vol. 1, pt. 



2, 1791, p. 114, pi. 112, figs. 11, nn. etc. 

 Serpula lactea Walkek and Jacob, Adam's Essays, ed. 2, 1798, p. 634, pi. 24, fig. 4. 

 Vtrmiculum lacteam Montagu, Test. Brit., 1S03, p. 522. 

 Polymorphina lactea Magillivray, Moll. Aberd., 1843, p. 320. — H. B. Brady, 



Rep. Voy. Challenger. Zoology, vol. 9, 1884, p. 559, pi. 71, fig. 11.— Cushman, 



Bull. 71, U. S. Nat. Mus., pt. 3, 1913, p. 84, pi. 34, fig. 8. 



