50 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



RUPERTIA STABILIS Wallich. 

 Plate 21, figs. 2-5. 



Rupertia stabilis Wallich, Ann. Mag. Nat. Hist., ser. 4, vol. 19, 1877, p. 501, pi. 

 20. — Schlumberger, Feuille des Jeunes Naturalistes, ann. 13, 1883, p. 27, 

 pi. 2, fig. 6-8.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 680, pi. 98, figs. 1-12. — Egger, Abh. kon. bay. Akad. Wiss, Miinchen, 

 CI. n, vol. 18, 1893, p. 439, pi. 21, figs. 8, 9.— Goes, Kongl. Svensk. Vet. 

 Akad. Handl., vol. 25, No. 9, 1894, p. 92, pi. 15, fig. 789; Bull. Mus. Comp. 

 Zool., vol. 29, 1896, p. 74— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 336, 

 pi. 79, fig. 4. 



Description. — Test attached, with a slightly spreading base, again 

 expanding above into a columnar test, more or less irregular in out- 

 line; chambers numerous, arranged in a spiral at the base and then 

 in a spiral manner as the columnar portion is developed; surface 

 smooth but conspicuously punctate; aperture an arched opening near 

 the inner margin of the somewhat concave apertural face ; color often 

 yellowish-brown. 



Length up to 1.68 mm. or more. 



Distribution. — The only record for this species in the North Pacific 

 is that given by Goes from the Eastern Tropical Pacific, Albatross 

 D 3419, in 772 fathoms. 



Genus PTJLVINTJLINA Parker and Jones, 1862. 



Pulvinulina Parker and Jones (type Nautilus repandus Fichtel and Moll), in 

 Carpenter, Parker, and Jones, Introd. Foram., 1862, p. 201. — H. B. Brady, 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 681. 



Description. — Test usually rotaliform, dorsal side usually convex, 

 ventral side usually flattened; outline typically circular but in some 

 species elongate; wall finely porous, variously ornamented by costse, 

 bosses, reticulations, or smooth; aperture typically ventral, extend- 

 ing from near the periphery to the umbilicus. 



This genus embraces a large number of species which show a wide 

 range of characters, but they seem to be best distinguished by having 

 the dorsal side convex, ventral side flattened, and the aperture elon- 

 gate from near the periphery to the umbilicus. 



There is much confusion in regard to this generic name, but Pul- 

 vinulina is kept here as there seems to be some difficulty in regard to 

 earlier names. 



PULVINULINA REPANDA (Fichtel and Moll). 

 Plate 24, fig. 3. 



Nautilus repandus Fichtel and Moll, Test. Micr., 1798, p. 35, pi. 3, figs. a-d. 



Rotalia repanda Parker and Jones, Ann. Mag. Nat. Hist., ser. 3, vol. 5, 1860, 

 p. 175, No. 25. 



Pulvinulina repanda Parker and Jones, in Carpenter, Parker, and Jones, Introd. 

 Foram., 1862, p. 311. — Terrigi, Atti Accad. Pont. Nuovi Lincei, vol. 33, 

 1880, p. 200, pi. 3, fig. 61.— Goes, Kongl. Svensk. Vet. Handl., vol. 19, 

 pt. 4, 1882, p. 110, pi. 8, figs. 276-282.— Terrigi, Atti Accad. Pont. Nuovi 



