610 
Transactions of the Society. 
Hauerina fragilissima Brady sp. n., plate XIII. figs. 8, 9, 10. 
Spiroloculina fragilissima Brady, 1884, Chall. Kept., p. 149, 
pi. ix. figs. 12-14. 
The ‘ Challenger ’ specimens of this form, as stated by Brady, 
might be assigned either to Spiroloculina or to Hauerina, but there 
is in the Malay gatherings a much compressed variety of Hauerina 
compressa, which in all but the final development of the three seg- 
ments to a convolution, is the exact counterpart of S. fragilissima. 
In this latter form the aperture is sometimes cribrate, sometimes 
has an elongated tooth, and frequently the dentate and oiibrate forms 
of aperture are combined in the same specimens. Various forms of 
aperture are figured on plate XIII. It is a very interesting and 
instructive passage form combining the characters of the genera 
Spiroloculina , Massilina , and Hauerina. 
It is moderately abundant at several Stations in both Areas. 
S. fragilissima occurs at seven ‘ Challenger ’ Stations, four of 
which are off the coast of Papua. 
Hauerina compressa d’Orbigny, plate XIH. fig. 11. 
II. compressa d’Orb., 1846, For. Foss. Vienne, p. 119, pi. v. 
figs. 25-27. H. compressa (d’Orb.) Egger, 1898, Abhandl. k. bayer. 
Akad. Wiss., Cl. II., vol. xviii. p. 244, pi. iii. figs. 9, 10, 28, 24. 
This rare species occurs both in the compressed form represented 
by Brady and in the more robust form figured by Egger. Usually 
it is only in the outermost convolution that there are more than two 
segments. The earlier chambers are indistinguishable from those of 
H. fragilissima. 
In the Malay Archipelago it is found rather sparingly at a few 
Stations in both Areas. 
Brady writes, “ So far as can be gathered from the ‘ Challenger * 
material, the present distribution of Hauerina compressa is restricted 
to a very small area. It occurs in two dredgings in the narrow sea 
between the northernmost part of Australia and the island of Xew 
Guinea, namely off Booby Island, 6 to 8 fathoms, and off Kaine Island, 
155 fathoms, and a few small and doubtful specimens have been found 
in an adjoining locality ; but beyond these limits it has not been ob- 
served.’" * The £ Gazelle ’ specimens were from Mauritius. 
Hauerina ornatissima Karrer sp. 
Quinqueloculina ornatissima Karrer, 1868, Sitzber. k. Akad. Wiss. 
Wien, vol. lviii. Abth. I. p. 151, pi. iii. fig. 2. Hauerina ornatissima 
Brady, 1884. Chall. Kept., p. 192, pi. vii. figs. 15-22. 
This handsome species, so commonly found in coral sand and so 
seldom recorded, occurs sparingly at several Stations in both areas. 
The specimens, although not very large, are characteristic. 
* c Challenger’ Report, 1884, p. 191. 
