EEPOET ON THE FOEAMINIFEEA. 
381 
Gaudryina rugosa, d’Orbigny (PI. XLVI. figs. 14-16). 
Gaudryina rugosa, d’Orbigny, 1840, Mem. Soc. geol. France, vol. iv. p. 44, pL iv. figs. 20, 21. 
„ „ Eeuss, 1855, Sitzungsb. d. k. Ak. Wiss. Wien, vol. xviii. p. 244, pi. vi. 
fig. 61, a.b. 
„ „ Hantken, 1875, Mittbeil. Jabrb. d. k. ung. geol. Anstalfc, vol. iv. p. 13, pi. i. 
fig. 4. 
Gaudryina rugosa is sufficiently distinguished by the large development and tri- 
angular contour of the triserial portion of the test, and by the rough arenaceous texture 
of the walls. 
In the living condition it has been noticed at seven localities, namely : — Vigo 
Bay, Spain, 11 fathoms; off Pernambuco, 675 fathoms; Simon’s Bay, South Africa, 150 
fathoms ; and four Stations in the South Pacific, 38 to 210 fathoms, the finest specimens 
beincr from off Raine Island, Torres Strait, 155 fathoms. 
It is a common fossil of the later Mesozoic formations, occurring in various deposits 
of the Cretaceous period, in France, Germany, Bohemia, England, and Ireland (d’Orbigny, 
Reuss, Wright). It is found also in beds of Middle Tertiary age in Germany and 
Hungary (Reuss, Hantken). 
Gaudryina scabra, n. sp. (PI. XLVI. fig. 7, a.b.). 
Gaudryina pupoides, Brady, 1870, Ann. and Mag. Nat. Hist., ser. 4, vol. vi. p. 300, pi. viii. fig. 5. 
Test elongate, tapering, somewhat compressed ; oral end broad and rounded, aboral 
extremity narrow, and obtusely pointed ; lateral edges thick and rounded. Triserial portion 
small but distinct ; biserial segments numerous, about five in each row, slightly inflated ; 
aperture a simple arched fissure at the inner margin of the final segment, on its line of 
union with the penultimate. Texture arenaceous ; colour brown. Length, y^-th inch 
(2 mm.). 
This, when well developed, is a large and striking variety, not differing materially in 
general contour from Gaudryina pupoides, but readily distinguished by the brown colour 
and rough arenaceous structure of the walls. The aperture is a simple Textularian fissure, 
without lip or border. 
In a paper on brackish-water Foraminifera, published several years ago ( loc . cit.), I 
figured, under the name Gaudryina pupoides, a minute thin-shelled arenaceous specimen 
obtained from Montrose Basin, which there can be little doubt is a starved example 
of the present species. 
Gaudryina scabra has only been taken at two Challenger Stations, not far apart, 
namely : — off Sombrero Island, 450 fathoms, and off Culebra Island, 390 fathoms. 
(ZOOL. CHALL. EXP. PART XXII. — 1883.) Y 49 
