TROPICAL PACIFIC FORAMINIFERA OF "ALBATROSS" 41 



Genotype. — By designation, Nodosaria (Glandulina) laevigata d'Or- 

 bigny. 



Test similar to Nodosaria, but the chambers embracing, the last- 

 formed one making up a large part of the surface of the test. Jurassic 

 to Recent. 



Topotypes of d'Orbigny's original species of this genus, which were 

 studied by Ozawa, show that the early stage is definitely biserial, as 

 do others of the Recent and Tertiary species ; hence it is placed in the 

 family Polymorphinidae. This biserial early stage can be demon- 

 strated by anyone who will take the trouble to examine the micro- 

 spheric form, and the distinction between this genus and Pseudo- 

 glandulina will at once be clear. 



GLANDUUNA LAEVIGATA d'Orbigny 



Plate 9, Figures 14a, b 



The only specimen referred to this species in the entire collection is 

 the one figured. It is from Guam Anchorage, Ladrone Islands, in 21 

 fathoms, and evidently represents the megalospheric form of the 

 species. 



Family NONIONIDAE 



Genus NONION Montfort, 1808 



Nonion Montfort, Conch. Syst., vol. 1, p. 211, 1808. 



Synonyms: Melonis Montfort, 1808; Florilus Montfort, 1808; Pulvinulus 



(part) Lamarck, 1816; Placentula (part) Lamarck, 1822; Cristellaria (part) 



Lamarck, 1822; Lenliculina (part) Defrance, 1824 (not Lamarck); 



Polystomella (part) Defrance and authors (not Lamarck); Nonionina 



d'Orbigny, 1826. 



Test free, planispiral, more or less involute, bilaterally symmetrical, 

 periphery broadly rounded to acute; chambers numerous; wall finely 

 perforate; aperture an arched, usually narrow opening between the 

 base of the apertural face and the preceding coil. Carboniferous (?), 

 Jurassic to Recent. 



NONION POMPIUOIDES (Fichtel and Moll) 



Plate 10, Figures 1, 2 



" Nautilus Melo" Soldani, Testaceographia, vol. 2, p. 38, pi. 8, figs. ZZ, A. B. C, 



1798. 

 Nautilus pompilioides Fichtel and Moll, Test. Micr., p. 31, pi. 2, figs. a~c, 1798. 

 Melonis etruscus Montfort, Conch. Syst., p. 67, xvii« genre, 1808. 

 Polystoynclla efrusca Defrance, Diet. Sci. Nat., vol. 32, p. 183, 1824. 

 Nonionina umbilicatula d'Orbigny, Ann. Sci. Nat., vol. 7, p. 293, pi. 15, figs. 



10-12, Modeles no. 86, 1826. 

 Nonionina melo d'Orbigny, Ann. Sci. Nat., vol. 7, p. 293, 1826. 

 Nonionina ■pompilioides Parker, Jones, and H. B. Brady, Ann. Mag. Nat. 



Hist., ser. 4, vol. 8, p. 246, pi. 12, fig. 158, 1871.— Terrigi, Atti Accad. Pont. 



Nuovi Lincei, vol. 35, p. 204, pi. 4, fig. 49, 1883.— H. B. Brady, Rep. Voy. 



