REPORT ON THE FORAMINIFERA. 
409 
Pacific. Its occurrence lias been noted at seven localities, namely : — Port Stephens and 
Port Jackson, New South Wales, 2 to 10 fathoms; off Levuka, Fiji, 12 fathoms; off 
the New Hebrides, 125 fathoms ; Torres Strait, 155 fathoms ; Humboldt Bay, Papua, 37 
fathoms; and Nares Harbour, Admiralty Islands, 17 fathoms. 
Bulirnina contraria , Reuss, sp. (PL LIY. fig. 18, a.b.c.). 
Rotalina contraria, Reuss, 1851, Zeitschr. d. deutsch. geol. Gesell., vol. iii. p. 76 pi. v. fig. 37. 
A taxoph ragmium sim He, Karrer, 1863, Sitzungsb. d. k. Akad. Wiss. Wien, vol. lvii. p. 126, pi. i. 
fig. 1. 
Pulvinulina auricula, Jones and Parker, 1872, Quart. Journ. Geol. Soc., vol. xxviii. p. 126. 
Cassidulina jonesiana, Brady, 1881, Quart. Journ. Micr. Sci., vol. xxi., N. S., p. 59. 
The somewhat anomalous characters of Bulirnina contaria, and its striking resemblance 
to certain Rotalince, have been the cause of the confusion revealed by the above 
synonymy of the species. The general contour of the test and the arrangement of 
the segments are precisely those of a depressed Rotalian, and at first sight it may easily 
be mistaken for Pulvinulina auricula or one of its immediate allies ; nevertheless the 
aperture is always characteristic and distinctly Bulimine. Guided by the stout, 
subdiscoidal or rounded contour of the shell, and the loop-like orifice, I was myself led 
into an error of another sort, and in a former paper (loc. cit.), placed the species amongst 
the CassidulincB, overlooking the fact that there was no real alternation of segments. The 
salient difference between Bulirnina contraria and the more typical members of the group 
depends upon the fact that the increase of the spire takes place in a lateral rather than in 
a vertical direction. Ataxophragmium simile, to judge by Dr. Ivarrer’s drawings, differs 
from the recent examples of the present species in little else than its somewhat more 
distinct and inflated segments. 
Bulirnina contraria has been obtained at nine Challenger Stations. Of these, one is 
in the North Atlantic, off Cape de Verde Islands, 1070 fathoms ; one in the North Pacific, 
the Hyalonema- ground, south of Japan, 345 fathoms ; and the remaining seven are in 
the neighbourhood of the islands of the South Pacific, the depths ranging from 1 7 fathoms 
to 1350 fathoms. 
The fossil specimens described by Reuss were from the Septaria-clay (Oligocene) of 
Hermsdorf, near Berlin ; and those of Karrer’s memoir from the Miocene of Kostej in the 
Banat. 
Bulirnina convoluta, Williamson (PI. CXIII. fig. 6 , ci.b.). 
Bulirnina pupoicles, var. convoluta, Williamson, 1858, Rec. For. Gt. Br., p. 63, pi. v. figs. 132, 
133. 
A somewhat obscure Rotaliform species, bearing a certain resemblance to that 
last described, but of longer oval outline and with a greater amount of lateral compression. 
