.REPORT OH THE FORAMIHIFERA. 
107 
naming so pretty an organism after one of tlie most assiduous of French rhizopodists, M. 
Berthelin. 
Miliolina bertlieliniana is exceedingly rare, its known distribution being confined to 
four localities, namely: — off Ascension Island, 7 fathoms; off Calpentyn, Ceylon, 2 fathoms; 
and in shore-sands collected by Mr. Ivitching near Tamatave, Madagascar, and near Port 
Elizabeth, Algoa Bay. 
Miliolina secans, d’Orbigny, sp. (PL VI. figs. 1, 2). 
“ Frumentaria seminula,” Soldani, 1795, Testaceograpliia, vol. i. part 3, p. 228, pi. clii. fig. E. 
Quinqueloculina secans, d’Orbigny, 1826, Ann. Sci. Hat., vol. vii. p. 303, Ho. 43; — Modele, Ho. 96. 
„ vulgaris, Id. Ibid. p. 302, Ho. 33. 
„ jplandana , Id. 1839, Foram. Cuba, p. 162, pi. x. figs. 24, 25. 
,, cora, Id. 1839, Foram. Amer. Merit!, p. 76, pi. ix. figs. 16-18. 
„ haidingerii, d’Orbigny, 1846, For. Foss. Vien., p. 289, pi. xviii. figs. 13-15. 
Miliolina seminulum, var. disciformis, Williamson, 1858, Eec. For. Gt. Br., p. 88, pi. vii. figs. 188, 189. 
Quinqueloculina secans, Parker, Jones, and Brady, 1865, Ann. and Mag. Hat. Hist., ser. 3, vol. xvi. p. 34, 
pi. i. fig. 10. 
The d’Orbignian model of Quinqueloculina secans is an excellent typical representative 
of a group of Miliolince characterised by their broad, compressed, outspread contour and 
sharp or subcarinate peripheral edge. Similar forms appear in successive works under 
many different names, and the foregoing list of synonyms might be much extended were 
that desirable. 
Miliolina secans is a very common species, frequenting the shallow-water margins of 
the- seas of both temperate and tropical latitudes. It is found in shelly sand from every 
part of our own coast, and is especially abundant in the Mediterranean, where the speci- 
mens often attain very large dimensions. 
In the fossil condition it occurs in the Miocene of the Vienna Basin (cl’Orbigny, Reuss), 
in the later Tertiary clays of Italy and Sicily (Jones and Parker), and in the Post-tertiary 
deposits of the west of Scotland (Robertson) and of the north-east of Ireland (Wright). 
A variety of the same species, with partially serrate margin, from the Italian Tertiaries, 
is figured by Prof. Costa under the name of Quinqueloculina denticulata (Atti dell’ 
Accad. Pont., vol. vii. p. 325, pi. xxv. fig. 6). 
Miliolina macilenta , n. sp. (PI. VII. figs. 5, 6). 
Test complanate, oval or discoidal ; margin thin ; resembling Miliolina secans in 
general contour and habit, but having a surface-ornament of curved, parallel, longi- 
tudinal or somewhat obliquely-set costse. Length, -^th inch (0'6 mm.). 
This appears clearly to be a costate variety of Miliolina secans, which hitherto has 
remained unnoticed. It occurs at three Stations amongst the islands of the Pacific, 
