Pr 
GOES: FORAMINIFERA. 13 
which latter is represented by Brady. But Gúmbel has described and de- 
signed another form that seems to be much nearer Brady's grosserugosa, i. e. 
Rosalina rudis. It is, like our form, 6-segmented in the outer convolution, 
provided with rounded edge, and is nearly spironautiloid like ours. Some- 
times both sides are so nearly involute that the test becomes nearly nautiloid. 
Pacific. 770-1201 fathoms; scarce. 
Caribbean Sea. 210 fathoms; very rare. 
P. ammonoides Reuss. 
Rotalina Lamarckiana p’ORB., Iles Canaries, p. 181, Pl. II. Figs. 18-15, is a pygmy 
form, that differs only in having the oral side nearly involute. 
Rosalina ammonoides Russ, 1840, Böhm., Kreidef., I. p. 86, Pl. VIII. Fig. 53, Pl. 
XIII. Fig. 66. 
Rosalina ammonoides Reuss, Kreidemergel Lemberg, Haid. Naturwiss., Abh. IV. 
p. 36, Pl. III. Fig. 2. 
Truncatulina ammonoides Bn., 1884, Chall. Rep., IX. p. 672, Pl. XCIV. Figs. 2, 3. 
Differs from the preceding in scarcely anything but the greater number of 
segments (10-13). The form of Reuss from the Bohemian and Galician chalk 
differs slightly from our recent one in having the oral side also nearly 
involute. 
Caribbean Sea. 210-382 fathoms; very scarce. 
P. farcta Frour. & Morr. 
Nautilus farctus Freut. & Morr., 1803, Test. Micr., p. 64, Pl. IX. Figs. g-7. 
Planorbulina farcta Goss, 1882, Ret. Rhizop. Caribb. Sea, Sv. Vet. Ak. Hdl., XIX. 
4, p. 95, Pl. VII. Figs. 220-225. 
Belongs to the more loosely built Planorbuline, with large poration and 
somewhat rough surface. The figure of Ficht. & Moll. is wanting a view of 
the spire side, and besides not satisfactory. It has generally 6-7 
last convolution, Its arrangement of its anfractus is sometimes quite Rotalini- 
segments in its 
form, but sometimes nearly nautiloid, the spire being hidden by the succeeding 
anfractus. Its usual size is from 0.50 to 0.60 mm. 
Caribbean Sea, 300 fathoms; not scarce (Gods). 
P. mediterranensis D'Or. 
D. mediterranensis D’ORB., 1826, Tab. Méth., An. Se. Nat., VII. p. 280, Pl. XIV. Figs. 
4-6, Mod, 79. 
P. farcta var. vulgaris Gots, Ret. Rhiz, Caribb. Sea, Sv. Vet. Ak. Hal, XIX. 4, 
p. 97, Pl. VIL. Fig. 227; Fig. 226, P. acervalis Br, 
P. mediterranensis BR., 1884, Chall. Rep., IX. p. 656, Pl. XCII. Figs. 1-3; Fig. 4, 
P. acervalis Bn. 
P. mediterranensis Goiis, 1804, Arct. & Scand. Foramf., Sv. Vet. Ak. Hdl., XXV. g, 
p. 91, Pl. XV. Fig. 180. 
