452 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



HAUERINA OKNATISSIMA (Karrer). 



Quinqueloculina omatissima Karrek, Sitz. Akad. Wisa. Wien, vol. 58, 1868, p. 151, 

 pi. 3, fig. 2.— H. B. Brady, Quart. Joum. Micr. Sci., vol. 16, 1876, p. 406. 



Eauerina omatissima H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 192, pi. 7, figs. 15-22.— MiLLETT, Joum. Roy. Micr. Soc, 1898, p. 610.— Rhum- 

 BLER, Zool. Jahrb., Abt. Syet., vol. 24, 1906, p. 53.— Heron-Allen and Ear- 

 land, Trans. Zool. Soc. London, vol. 20, 1915, p. 590.— Cushman, Bull. 71, 

 U. S. Nat. Mus., pt. 6, 1917, p. 63, pi. 23, figs. 1, 5. 



This species has occurred in the material from but one station, 

 D5178, off Point Origon, Romblon, in 78 fathoms (143 meters). 



I can not explain its absence in so much material that should, it 

 seems, be just the habitat for this tropical Indo-Pacific species. 



Millett records it from the Malay region. Chapman has had it from 

 Funafuti, Dakin records it from off Ceylon, and Heron-Allen and Ear- 

 land record it from the Kerimba region. 



Hauerina omatissima — Material examined. 



Genus TRILOCULINA d'Orbigny, 1826. 



TRILOCULINA TRIGONULA (Lamarck). 



Miliolites trigonula Lamarck, Ann. du Mus., vol. 5, 1804, p. 351, No. 3. 

 Triloculina triognula d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 299, No. 1, pi. 16, 



figs. 5-9; Modules, 1826, No. 93.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 6, 



1917, p. 65, pi. 25, fig. 3. 

 Miliolina trigonula Williamson, Recent Foraminifera of Great Britain, 1858, p. 



83, pi. 7, figs. 180-182.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 



1884, p. 164, pi. 3, figs. 14-16. — Heron-Allen and Earland, Trans. Zool. Soc. 



London, vol. 20, 1915, p. 561. 



This species is not abundant in this area, compared to that of 

 T. tricarinata. 



There are records from but seven stations, ranging in depth from 

 12 to 318 fathoms (22 to 582 meters), the average depth being 98 

 fathoms (179 meters). 



These include the following localities: Sulu Archipelago, off Siasi, 

 off Jolo, off Tawi Tawi; between Bohol and Leyte; between Masbate 

 and Leyte; between Burias and Luzon; and China Sea, off Hongkong. 



Specimens are common at but one of these stations— D52 18, 

 between Burias and Luzon, in 20 fathoms (37 meters). 



