TROPICAL PACIFIC FORAMINIFEKA OF ALBATROSS 29 



to fit this particular species much better than any of the earlier fig- 

 ures. The development as shown in our series of specimens is inter- 

 esting. Though the neck remains of the same general character 

 throughout and also the general form of the test, the form of the 

 chambers changes greatly from the young to the adult condition, as 

 already noted in the above description. 



This is one of the largest species of the genus in the collection and 

 is best developed in the collections from Guam Anchorage, Ladrone 

 Islands, in 21 fathoms. It also occurs off the Fiji Islands at Mokaujar 

 Anchorage and at Rangiroa. There are numerous specimens from 

 various localities that are possibly the young of this species, but 

 where no adults are present to check this they have not been included. 



Genus SCHLUMBERGERINA Munier-Chalmas, 1882 



Schlumbergcrina Munier-Chalmas, Bull. Soc. Geol. France, ser. 3, vol. 10, 

 p. 424, 1882. — Cushman, Cushman Lab. Foram. Res. Spec. Publ. No. 1, 

 p. 148, 1928 ; U. S. Nat. Mus. Bull. 104, pt. 6, p. 35, 1929. 



Miliolina (part) of authors. 



Massilina (part) of authors. 



Genoholotype. — Schlumbergerina areniyhora Munier-Chalmas. 



Test typically quinqueloculine, the chambers narrowing so that 

 frequently more than five chambers may be visible from the exterior ; 

 wall calcareous, imperforate, the exterior thickly coated with sand 

 grains; aperture cribrate. 



Late Tertiary and Recent. 



The Miliolina alveoliniformis H. B. Brady described in 1879 is 

 probably the same as Munier-Chalmas's species, and belongs here. 

 This species is often abundant in shallow-water tropical collections, 

 especially in the Indo-Pacific, but similar forms are also found in 

 shallow warm water in the West Indian region. 



SCHLUMBERGERINA ALVEOLINIFORMIS (H. B. Brady) 



Plate 8, Figure 1 



Miliolina alveoliniformis H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, p. 268, 

 1879; Rep. Voy. Challenger, Zoology, vol. 9, p. 181, pi. 8, figs. 15-20, 18S4.— 

 Egger, Abh. kon. bay. Akad. Wiss. Miinchen, CI. II, vol. IS, p. 232, pi. 2, 

 figs. 17-19, 1893.— Woodward, The Observer, vol. 4, p. 76, 1893.— Millett 

 (in part), Journ. Roy. Micr. Soc, 1S9S, p. 510.— Chapman, Journ. Linn. 

 Soc. Zool., vol. 28. p. 177, 1900; vol. 30, p. 398, 1910.— Heron-Aixen anil 

 Earland, Trans. Zool. Soc. London, vol. 20, pt. 2, p. 581, 1915. 



Quinqudoeulina alveoliniformis Cushman, U. S. Nat. Mus. Bull. 71, pt. 6, p. 43, 

 1917 ; U. S. Nat. Mus. Bull. 100, vol. 4, p. 443, 1921 ; Proc. U. S. Nat. Mus., 

 vol. 59, p. 64, 1921; Carnegie Inst. Washington Publ. 311, p. 64, 1922; 

 Publ. 342, p. 58, pi. 21, fig. 8, 1924 ; Publ. 344, p. 81, 1926. 



Schlumbergerina alveoliniformis Cushman, U. S. Nat. Mus. Bull. 104, pt. 6, 

 p. 36, 1929. 



