Report on Foraminifera. B\j F. W. Millett . 
611 
Planispirina Seguenza. 
Planispirina contraria d’Orbigny sp., plate XIII. fig. 12. 
Biloculina contraria d’Orb., 1848, For. Foss. Vienne, p. 266, 
pi. xvi. figs. 4-6. Planispirina contraria Brady, 1884, Chall. Kept., 
p. 195, pi. xi. figs. 10, 11 and woodcut fig. 5 a. 
From Station 27 there is a single specimen of this rather rare 
although widely distributed species. 
It is recorded from six ‘ Challenger ’ Stations, amongst them being 
north of Papua and off Amboyna. A somewhat doubtful example 
appears on pi. iii. figs. 35, 36 of Egger’s ‘ Gazelle ’ Beport, but there 
is no reference to it in the text. 
Planispirina exigua Brady, plate XIII. fig. 13. 
Eauerina exigua Brady, 1879, Quart. Journ. Micr. Sci., vol. xix. 
n.s., p. 53. P. exigua Brady, 1884, Chall. Bept., p. 196, pi. xii. 
figs. 1-4 and woodcut fig. 5 b. P. exigua (Brady) Brady, Parker, 
and Jones, 1888, Trans. Zool. Soc., vol. xii. p. 216, pi. xl. fig. 4. 
P. exigua (Brady) Egger, 1893, Abhandl. k. bayer. Akad. Wiss., 
Cl. II. vol. xviii. p. 245, pi. iii. figs. 11, 12. 
This common tropical shallow water species occurs in considerable 
abundance, and is widely distributed in both areas. The specimens 
exhibit remarkable persistency of form. 
Sub-Family Fiseherininse. 
Test free ; segments numerous, arranged on a Botaliform or insequi- 
laterally planospiral plan ; aperture large, terminal. 
This sub-family, unique amongst the Porcellanea in having the 
chambers arranged in a more or less Botaliform manner, embraces 
the genera Fischer in a of Terquem and Geratina of Goes. 
The genus Fischer ina was instituted by Terquem in 1878 to 
accommodate a rare aberrant form from the Upper Pliocene of the 
Island of Bhodes. As usual with him, taking no notice of the shell 
structure, he assigned it a place between Rotalina and Nonionina , 
and named the species F. Rhodiensis* 
In 1894, Goes f described a porcellanous species from the Azores, 
which in form resembles Trochammina proteus Karrer. To this form 
he gave the name of Ceratina trochamminoides , remarking that 
through lack of specimens he was unable thoroughly to investigate 
the genus. Its affinities with Fischerina are, however, tolerably well 
marked, and it may be assigned provisionally to the same sub-family. 
Fischerina Terquem. 
Fischerina pellucida sp. n., plate XIII. figs. 14, 15. 
Test Botaliform, depressed, consisting of about three convolu- 
tions, each containing five or six chambers, which are all visible on the 
* Mem. Soc. Ge'ol. France, ser. 3, vol. i. 1878, p. 80, pi. xiv. fig. 25. 
f K. Svenska Vet.-Akad. Hand]., vol. xxv. p. 122, pi. xxv. fig. 930. 
