82 BULLETIN 104, UNITED STATES NATIONAL MUSEUM 



Genus PELLATISPIRA Boussac, 1906 



Pellalispira Boussac, Bull. Soc. G^'ol. France, ser. 4, vol. 6, 1906, p. 91. — 

 CusHMAN, Special Publ. No. 1, Cushman Lab. Foram. Res., 1928, p. 284. 

 Nvmrmilites (part) Hantken, 1876 (not Lamarck). 



Genotype, by designation. — Pellatispira douvillei Boussac. 



Test planispiral, bilaterally symmetrical, the earliest coil with the 



chambers close coiled, later ones loosely coiled with a mass of shell 



material between, separating the coils; lateral walls with pillars, 



appearing as bosses at the surface. 



Tertiary. 



Genus BACULOGYPSINA Sacco, 1893 



Baculogypsina Sacco, Bull. Soc. Belg. G6ol., vol. 7, 1893, p. 206. — Cush- 

 man, Special Publ. No. 1, Cushman Lab. Foram. Res., 1928, p. 284. 

 Orhitolina Parker and Jones, 1860 (not d'Orbigny). 

 Tinoporus of Authors (not Montfort). 



Genotype, by designation. — Orhitolina sphaerulata Parker and Jones. 



Test in the early stages like Calcarina, very early developing four or 

 more large spines which increase in size independent of the chambers, 

 chambers quickly covering the v/hole surface, supplementary skeleton 

 well developed, consisting of pillars at the angles of the chambers 

 ending in rounded bosses at the surface and connected with sur- 

 rounding ones by radial connecting rods giving a reticulate appearance 

 to the test. 



Tertiary and Recent. Living only in the Indo-Pacific. 



Genus ARNAUDIELLA H. Douville, 1907 



Arnaudiella H. Douville, Bull. Soc. Geol. France, sdr. 4, vol. 6, 1907, 

 p. 599. — Cushman, Special Publ. No. 1, Cushman Lab. Foram. Res., 

 1928, p. 285. 



Genoholotype. — Arnaudiella grossouvrei H. Douville. 



Test lenticular, the early chambers involute, later ones compressed 

 and somewhat e volute, supplementary thin-walled chambers devel- 

 oped along the spiral; wall calcareous, perforate, with pillars. 



Eocene. 



Family 36. CYMBALOPORETTIDAE 



Test in the early stages trochoid, close to Discorhis, in the later 

 development the chambers generally in annular series about the 

 periphery; wall calcareous, perforate; apertures numerous, circular 

 pores in the adult, variously arranged; in Tretomphalus pelagic in the 

 adult. 



This family evidently developed from a form close to Discorbis, and 

 has adopted the alternating annular series of chambers about the 

 periphery with numerous apertures. In Tretomphalus, there is a 

 very interesting adult development fitting the test for the pelagic 

 life of the animal at this stage. See Earland, On Cymbalopora 

 bulloides (d'Orbigny) and its internal structures.*^ 



" Journ. Quekett Micr. Club, ser. 2, vol. 8, No. 51, 1902, pp. 309-322, pi. 16. 



