MILIOLIDAE SI 



wherever either form is abundant that it is impossible to separate the species of Reuss 

 from the earher record of Czjzek. 



31. Sigmoilina sigmoidea (Brady). 



Planispirina sigmoidea, Brady, 1S84, FC, p. 197, pi. ii, figs. 1-3, 5 c. 



Sigmoilina sigmoidea, Schlumberger, 1887, P, pp. 476 and 488 (106 and 118 in reprints), pi. vii, 

 figs. 9-11; text-figs. 1-5. 



Sigmoilina sigmoidea, Cushman, 1918, etc., FAO, 1929, p. 50, pi. xi, figs. 5-6. 

 Six stations: 181, 384, 385, 386; WS 204, 403. 



Typical but very rare everywhere, except at St. 385 where it is frequent. All the 

 stations are in deep water between 3328 and 4773 m., except St. 181 where a single 

 specimen was found at 335 m. 



Sub-family HAUERININAE 

 Genus Tubinella, Rhumbler, 1906 



32. Tubinella funalis (Brady) (F 41) (SG 24). 

 Three stations: 167, 190; WS 482. 



Frequent and very large at Sts. 190 and WS 482; only a single specimen at the other 

 station. 



Genus Planispirina, Seguenza, 1880 



33. Planispirina irregularis (d'Orbigny) (F 43) (SG 25). 

 Six stations: 175, 177, 180, i8i ; WS 494 a, 517. 



Rare or very rare everywhere, the best and largest specimens at Sts. 175 and WS 517 ; 

 elsewhere they are usually small. Those found at St. 175 are large and nearly spherical 

 in shape, approaching P. sphaera from the same station very closely. 



34. Planispirina sphaera (d'Orbigny) (F 44) (SG 26) (Plate IX, fig. 2). 

 Three stations: 170, 175, 363. 



Large specimens are frequent at St. 170, rare at the other stations. The labyrinthine 

 aperture generally developed in large specimens was rarely seen, the general form of 

 aperture being a simple curved slit, nearly closed by a large plate-like tooth. At St. 170 

 a fragment of what must have been a very large individual had a coarsely cribrate 

 aperture of an unusual character, a photograph of which is given. 



35. Planispirina bucculenta (Brady) (F 45) (SG 27). 

 Nine stations: 170, 175, 177, 182, 190, 362, 363; WS 403, 482. 



Common at Sts. 170, WS482; rare or very rare elsewhere, often only a single 

 specimen. All but two of the records are from less than 350 m., the exceptions being a 

 large and well-developed individual from St. 177 in 1080 m., and a few very small and 

 pauperate tests from Sts. 362 (3370 m.) and WS 403 (3721 m.). These last are so thin- 

 walled as to be semi-transparent when dry and iridescent when wetted, the shell being 

 a mere film covering the chitinous lining. 



36. Planispirina bucculenta var. placentiformis (Brady) (SG 28). 

 Two stations: 170; WS 482. 



Much rarer than the type at both stations. 



7-2 



