336 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



PULVINULINA LATERALIS (Terquem). 



Plate 69, figs. 2a-c. 



Rosalina lateralis Terquem, M^m. Soc. Geol. France, ser. 3, vol. 1; Mem. 3, 1878, 

 p. 25, pi. 2, figs, lla-c. 



Pulvinulina lateralis H. B. Bkady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 689, pi. 106, figs. 2, 3.— Egqer, Abh. kon. bay. Akad. Wise. Munchen, 

 CI. II, vol. 18, 1893, p. 413, pi. 18, figs. 48-50.— Millett, Joiirn. Roy. Micr. 

 Soc, 1904, p. 497.— CusHMAN, Proc. Boston Soc. Nat. Hist., vol. 34, 1908. 

 p. 31, pi. 5, figs. 11, 12. — SiDEBOTTOM, Mem Proc. Manchester Lit. and Philos. 

 Soc, vol. 53, No. 21, 1909, p. 5, pi. 2, fig. 6, pi. 13, figs. 1, 2 (?).— Heron- 

 Allen and Earland, Trans. Zool. London, vol. 20, pt. 17, 1915, p. 714, pi. 53, 

 figs. 6-11. 



Description. — ^Test usually somewhat ovate, later chambers be- 

 coming rapidly larger and longer on the ventral side, the last-formed 

 chamber often covering at least half the surface of the test; dorsally 

 sutures somewhat limbate, surface generally flattened, ventrally 

 sutures simple, depressed, the surface tumid, finely punctate except 

 the last-formed chamber, which is covered with large circular pores, 

 which are often bordered with a somewhat thicker rim of shell ma- 

 terial, these ]>ores serving as the aperture. 



Test up to 2.5 mm. in diameter. 



The records for P. lateralis are rather scattered, largely limited to 

 the Indo-Pacific region. It is, however, recorded from numerous 

 areas by Sidebottom and Heron-Allen and Earland had it from the 

 Kerimba Archipelago off the east coast of Africa. 



In the Philippine material it has occurred at 11 stations, ranging 

 in depth from 12 to 162 fathoms (22 to 297 meters), average depth 

 44 fathoms (80 meters). Six of the stations are in the Sulu Sea off 

 Jolo and Tawi Tawi; the others, off Romblon, two stations; between 

 Burias and Luzon; between Marinduque and Luzon; and off Darvel 

 Bay, Borneo. At the two stations off Romblon specimens were 

 fairly frequent in their occurrence; at most other stations rather 



few. 



li ,t .. -J .>,.. Pulvinulina lateralis — Material examined. 



Locality. 



Depth 



in 

 fath- 

 oms. 



Bot- 

 tom 

 tem- 

 pera- 

 ture. 



Character of 

 bottom. 



Abundance. 



6 05 00 N. 



12 38 15 N. 



13 11 15 N. 



4 52 45 N. 

 6 04 20 N. 



5 35 40 N. 

 5 24 40 N. 

 5 18 10 N. 

 5 12 40 N. 



12 43 00 N. 



13 38 00 N. 



120 58 50 E. 



122 12 30E. 



123 02 45E. 



119 00 45 E. 



120 59 20E. 

 120 47 30 E. 

 120 27 15 E. 



120 02 55 E. 

 119 55 10 E. 

 122 06 15E. 



121 58 00 E. 



19 

 37 

 20 

 162 

 22 

 17 

 24 

 49 

 12 

 78 

 50 



'F. 



75.7 



55.8 



s.,co 



hrd.s 



crs. s 



br.s., Co... 



s.,sh 



CO. s 



CO. s.jSh... 

 CO. s., sh . . . 



s 



fne. s 



sft. gn. m.. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Few. 



Rare. 



Frequent 



Rare. 



