REPORT ON THE FORAMINIFERA. 
389 
Tritaxia lepidci , H. B. Brady (PI. XLIX. fig. 12, a.h.). 
Tritaxia lepida, Brady, 1881, Quart. Journ. Micr. Sci., vol. xxi., N. S., p. 55. 
„ ovata, Terquem, 1882, Mem. Soc. geol. France, sdr. 3, vol. ii. Mdm. III., p. 105, pi. xi. 
fig. 11. 
Test triquetrous ; elongate, broadest near the middle, tapering to a point at the 
aboral extremity, distal end rounded ; the three sides nearly equal, the angles sharp 
or subcarinate ; texture hyaline. Aperture simple, consisting of a short tubular 
neck with thickened lip, at the centre of the terminal segment. Length, -gyjth inch 
(0'3 mm.). 
This rare and delicate little shell, distinguished by its hyaline texture and central 
tubular aperture, was found at Station 45, off the coast of North America, a little south 
of the latitude of New York ; depth, 1240 fathoms. 
The Tritaxia ovata of Terquem, from the Eocene beds of the environs of Paris, 
appears to belong to the same species. 
Tritaxia tricarinata, Eeuss (PI. XLIX. figs. 8, 9). 
Textularia tricarinata, Reuss, 1845, Verstein. Bohm. Kreid., pt. i., p. 39, pi. viii. fig. 60. 
Verneuilina dubia, Id., 1850, Haidinger’s Naturw. Abhandl., vol. iv. p. 40, pi. iv. 
fig. 3. 
Tritaxia tricarinata , Id., 1860, Sitzungsb. d. k. Ak. Wiss. Wien, vol. xl. p. 228, pi xii. 
figs. 1, 2. 
I find no characters by which recent specimens, such as those represented in 
PI. XLIX. figs. 8, 9, can be distinguished from the Cretaceous species as delineated by 
Eeuss. In the form and disposition of the segments and the obscure septation they 
resemble the drawings of Verneuilina dubia in the “Lemberg” memoir ( loc . cut.), rather 
than the better-defined figures subsequently published ; but these minor characters are 
rightly treated by the author in his later papers as the result of mere individual variation. 
Living specimens of Tritaxia tricarinata have only been found at a single Challenger 
Station, off Eaine Island, Torres Strait, 155 fathoms. 
The works above quoted refer to the occurrence of the species in the Upper Cretaceous 
system (Cenomanian, Senonian, &c.) of Germany and Bohemia. 
Tritaxia indiscreta, H. B. Brady (PI. XLIX. figs. 10, 11). 
Clavulina indiscreta, Brady, 1881, Quart. Journ. Micr. Sci., vol. xxi., N. S., p. 55. 
Test triquetrous ; compressed on three sides, broadest near the middle, tapering 
towards the ends ; salient edges rounded, except near the aboral end, where they are 
(ZOOL. CHALL. EXP. — PART XXII. — 1883.) Y 50 
