132 
FORAMINIFERA OF OBAN. 
June, 1889. 
56. Globigerina rubra. D’Orbigny, 1839. 
Wright, J., 1886, Fauna S.W. Coast, Ireland, p. 613, 
Proc. Roy. Irish Acad. Ser. 2, Vol. iv. (Science.) 
Rare. 
57. Orbulina universa. D’Orbigny, 1839. 
Williamson (R. F.), 1858, p. 2, pi. i., fig. 4. 
Robertson, I). (W. S.), 1874, common. 
H. B. Brady, 1870, Ann. and Mag. Nat. Hist., p. 277, 
p. 298. 
Generally spoken of as rare in shallow water, and such 
specimens are often of a brown colour, likely to 
be cast aside as not foraminiferous. Rare. 
58. Patellina corrugata. Williamson, 1858. 
Williamson (R. F.), 1858, p. 46, pi. iii., figs. 86-9. 
Robertson, D. (W. S.), 1874, rare. 
J. D. Siddall, 1886, Liv. Mar. Biol. Com. Report, 
p. 70, frequent. 
A form that at present cannot be mistaken for any 
other shell, generally frequenting muddy 
bottoms. Rather rare. 
59. Discorbina globularis. D’Orbigny, 1826. 
Williamson (R. F.), 1858, p. 53, pi. iv., figs. 104-5. 
Robertson, D. (W. S.), 1874, common. 
Of a very hyaline texture, strongly perforated, the 
later segments increase very rapidly in size, the 
last three or four being half the shell. Common. 
60. Discorbina rosacea. D’Orbigny, 1826. 
Williamson (R. F.), 1858, p. 54, pi. iv., figs. 109-11. 
Robertson, D. (W. S.), 1874, common. 
A trochoid shell, of varying height, with three or four 
coils, each of which contains about four segments, 
which are convexed, edged, and describe about 
one-third of a circle, mainmillated on the edge, 
otherwise they might be mistaken for Hotalia 
nitida. 
These mammillated edged D. rosacea , I think, ought 
to be called D. rosacea var. mamilla, Will., as 
there seems quite as much variety between 
D’Orbignv’s specimens and Williamson’s as 
between Lagena Icevis and striata. Very common. 
61. Rotalia Beccarii. Linne, 1767. 
Williamson (R. F.), p. 48, pi. iv., figs. 90-2. 
Robertson, D. (W. S.), 1874, common. 
Many of these (Oban, 1883) are very young shells, 
not incrusted with lime, and therefore in beautiful 
condition. Common. 
