460 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



TRILOCULINA ROTUNDA d'Orblgny. 



Triloculina rotunda d'Orbigny, Ann. Sci. Nat,, vol. 7, 3826, p. 299, No. 4. — 

 ScHLUMBERGER, M^m. Soc. Zool. France, vol. 6, 1893, p. 64, pi. 1, figs. 48-50; 

 figs. 11, 12 (in text). 



MiJiolina rotunda Millett, Journ. Roy. Micr. Soc, 1898, p. 267, pi. 5, figs. 15, 

 16. — SiDEBOTTOM, Mem. Proc. Manchester Lit. and Philos. Soc, vol. 48, No. 5, 

 1905, p. 8. — Heron-Allen and Earland, Proc Roy. Irish Acad., vol. 31, 

 pt. 64, 1913, p. 25.— Wiesner, Archiv. Prot., vol. 25, 1912, p. 225.— Heron- 

 Allen and Earland, Trans. Zool. Soc London, vol. 20, 1915, p. 568, pi. 42, 

 figs. 27-30. 



I have records of this species from six stations, ranging in depth 

 from 10 to 569 fathoms (18 to 1,040 meters), the average depth 36 

 fathoms. Bottom tetnperatures are given at hut two stations, 

 41.2° F. (5.1° C.) and 56.4° F. (13.5° C). Of these stations the 

 one at 10 fathoms (18 meters) is the only one in shallow^ water, the 

 next deepest station heing in 298 fathoms (545 meters). 



The localities are China Sea, off southern Luzon; Pacific Ocean, 

 east coast of Mindanao; Palawan Passage; and to the southward, 

 between Gillolo and Makyan Island; south of Patiente Strait; and 

 Molucca Passage. 



Triloculina roiundata — Material examined. 



TRILOCULINA VALVULARIS Reuss. 



Triloailina valvularis Reuss, Zeitsch. deutsch. geol. Ges., vol. 3, 1851, p. 85, 

 pi. 7, fig. 56. 



Miliolina valvularis H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 161, pi. 4, figs. 4, 5. — MiLh^ETT, Journ. Roy. Micr. Soc, 1898, p. 501, pi. 11, 

 figs. 5-7.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 290, pi. 44, fig. 4.— 

 Chapman, Journ. Linn. Soc, vol. 28, 1900, p. 172. — Heron-Allen and 

 Earland, Trans. Zool. Soc. London, vol. 20, 1915, p. 599. 



There are only two stations for thisspecies^ — ^D5333, Mindoro Strait, 

 in 310 fathoms (567 meters), where it is very common, and Do650, 

 Gulf of Boni, 540 fathoms (988 meters), where it is rare. 



This species is also found off New Zealand, and may be different 

 from that of Reuss. 



Heron-Allen and Earland record it from Kerimba, and note that 

 their material was very variable, but that the triloculine form was 

 most abundant. 



