32 BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



but not the final one, possess open, flaring, backward-extending tubes 

 or slits on their dorsal surfaces and toward their peripheral edges. 

 In general, the wall on the dorsal surface is rather coarsely punctate 

 whereas that on the ventral surface is not visibly punctate. 

 This species thus far has been reported only in the Pacific. 



Family PEGIDIIDAE 



Genus HOFKERINA Chapman and Parr, 1931 



HOFKERINA SEMIORNATA (Howchln) 



Plate 18, Figure 3 



Pulvinulina semiornata Howchin, 1889, Trans. Proc. Roy. Soc. So. Australia, 

 vol. 12, p. 14, pi. 1, fig. 12. 



Hofkerina semiornata (Howchin)/ — Chapman and Parr, 1931, Proc. Roy. Soc. 

 Victoria, vol. 43, pt. 2, p. 237, pi. 9, figs. 1-5.— Crespin, 1936, Palaeont. 

 Bull., no. 2, Australia, p. 6, pi. 1, fig. 3. — Carter, 1958, Geol. Surv. Victoria, 

 Bull. No. 55, p. 58, pi. 9, figs. 88-90.— Glaessner and Wade, 1959, Micro- 

 paleontology, vol. 5, no. 2, p. 203, pi. 1, figs. 12-14. 



This species was described and subsequently recorded from the 

 Miocene of Australia. A single typical specimen was found at Alba- 

 tross station H3942 (142 fathoms, northwest point Mehetia Island, 

 S. y% mi.), where the bottom is volcanic rock and coarse coral sand. 

 So far as I know, there is no verification of Recent existence of this 

 species, and I doubt that this single specimen is of Recent origin. 



The species is large for Foraminifera, the present specimen measur- 

 ing nearly 2 mm. in greater diameter. The final whorl is composed 

 of 3% chambers that are separated by depressed sutures on the ventral 

 side but are obscured by the papillose surface ornamentation on the 

 dorsal side. The inner parts of the chambers on the ventral side are 

 punctured by coarse pores, but the wall itself is very finely and densely 

 porous with the pores visible as fine white radial lines extending 

 through the translucent wall. 



Genus PEGIDIA Heron-Allen and Earland, 1928 



PEGIDIA DUMA (d'Orbigny) 



Plate 18, Figure 5 



Rotalia dubia d'Orbigny, 1826, Ann. Sci. Nat., vol. 7, p. 274.^ — Fornasini, 1908, 

 Mem. Rend. Accad. Sci. Istit. Bologna, ser. 6, vol. 5, p. 46, pi. 1, fig. 14. 



Pegidia dubia (d'Orbigny).' — Heron- Allen and Earland, 1928, Journ. Roy. 

 Micr. Soc, vol. 48, p. 290, pi. 1, figs. 8-15. 



Rare typical specimens were found in the material from Rutavu, 

 Rangiroa, and the beach at Hereheretue Atoll. 



