Hyperammina friabilis Brady, 1884

Lee, Sue Yeon, Yoo, Jung Sun & Kim, Seung Tae, 2017, Thirty new records of marine benthic Foraminifera from Korean waters, Journal of Species Research 6, pp. 75-93 : 79

3. Hyperammina friabilis Brady, 1884 ( Plate 1. 3 a-b)

Hyperammina friabilis Brady, 1884, p. 258 , Pl. XXIII,

figs. 1-3, 5-6.

Material examined. Korea, East Sea , station E4 (37°55 ʹ 4.816 ʺ N, 128°51 ʹ 11.786 ʺ E), 20 May 2016, by Van Veen Grab, collected by Raehyuk Jeong and Jisu Yeom. NIBR ID: NIBRPR0000107239 .

Diagnosis. Test composed of a large proloculus and an undivided tubular chamber of constant diameter, elongated, curved in the middle portion. Wall agglutinated with medium-sized quartz particles, grey in color. Test free, elongated, and straight. Aperture terminal.

Remarks. According to the original description in Ellis & Messina (1940), H. friabilis is larger and the outline is commonly broader and stouter than those of H. elongata . The wall of H. friabilis is conspicuously thick and the cavity has a well-marked preceding chamber, while H. elongata has a uniform and thin wall, and the cavity is slightly widened at the inferior end. Hyperammina friabilis is commonly grey rather than brown in color.

Distribution. Korea, China, Japan, New Caledonia, New Zealand, Gulf of Mexico, United States, Mediterranean Sea, Norway.

Class Tubothalamea Pawlowski, Holzmann & Tyszka, 2013

Order Miliolida Delage & Hérouard, 1896 Superfamily Milioloidea Ehrenberg, 1839

Family Hauerinidae Schwager, 1876

Genus Pyrgo Defrance, 1824