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Transactions of the Society. 
mens are sufficiently numerous to mark perfectly the transition from 
the normal to the limbate form. 
Brady gives three ‘ Challenger ’ Stations, all in the Pacific, namely, 
off East Moncoeur Island, Bass Straits; Nares Harbour, Admiralty 
Islands ; and the Hyalonema- ground south of Japan. 
Textularia inconspicua var. jugosa Brady, plate VII. fig. 2. 
T. jugosa Brady, 1884, Chall. Kept., p. 858, pi. xlii. fig. 7. 
T. juqosa (Brady) Egger, 1898, Abhandl. k. bayer. Akad. Wiss., 
Cl. II. vol. xviii. p. 278, pi. vi. figs. 19-21. 
“ D’Orbigny has figured a specimen to all appearance belonging " 
to this species (Foiam. Canaries, pi. i. figs. 19-21) under the name of 
Textularia sagittula, and it is difficult to account for the apparent con- 
fusion of two forms so entirely distinct — So wrote Brady (Chalk Hep., 
p. 858). In his 4 Foraminifera of the Crag,’ 1895, p. 145, Prof. T. 
liupert Jones has no difficulty in associating as varieties of T. sagit- 
tula both d’Orbigny’s and Brady’s forms, and adds to them the heavy 
arenaceous limbate variety of T. sagittula found in the Crag and other 
deposits. 
It is not stated by d’Orbigny nor by Brady if the shell-substance 
of their species is hyaline or arenaceous ; the latter, however, remarks 
that the raised bands of T. jugosa are of clear shell-substance. From 
Paine Island (‘ Challenger ’ Station 185) I have some fine specimens of 
the last named form, and they are all distinctly hyaline, the limba- 
tions, moreover, being clearer than the other portions of the test. In 
Brady’s figures, both of T. inconspicua and T. jugosa , there is shown 
a delicate striation of the margin of the oral face of the segments ; 
this is conspicuous in all the specimens I have had an opportunity of 
examining ; and in the large fossil specimens from Lucugnano figured 
by Costa * under the name of T. sagittula this feature is well 
shown. 
Seeing that the relationship of T. inconspicua with T. jugosa is 
well indicated by the Malay specimens, and that the arenaceous form 
is also found in the same seas, it would appear convenient to treat 
the hyaline form as T. inconspicua var. jugosa Brady, and the are- 
naceous form as T. sagittula var. jugosa T. liupert Jones. In the 
absence of a knowledge of the shell-substance of the limbate varieties 
of T. sagittula figured by Costa and by d’Orbigny, it is not clear to 
which of these varieties they should be assigned. 
It is doubtful if the power possessed by certain forms of strengthen- 
ing the secreted shell by the agglutination of extraneous particles of 
matter has any zoological value ; that it has none as far as genera are 
concerned, is shown by such obsolete names as Plecanium and Ataxo- 
phragmium ; but it appears to be of use in dealing with the characters 
* Costa, Atti Accad. Pontaniana, vol. vii. fas. 2, 1856, p. 287, pi. xxiii. fig. 11. 
