GOES: FORAMINIFERA., 23 
JACULELLA Brapy. 
J. acuta Brapy. 
J. acuta Br., 1879, Ret. Rhizop. Chall. Exp.; Qu. Journ. Micr. Sci. (n. s.), XIX. 
p. 35, Pl. III. Figs. 12, 18. 
J. acuta Br., 1884, Challeng. Rep., LX. p. 255, Pl. XXIL. Figs. 14-18, 
A single but stout specimen has been met with from the Gulf of Mexico. 
Gulf of Mexico. 169 fathoms; rare. 
J. obtusa Brapy. 
J. obtusa Br. (1882), 1884, Challeng. Rep., LX. p. 256, Pl. XXII. Figs. 19-22. 
J. obtusa Gos, 1898, Arct.& Scand. Foramf., Sv. Vet. Ak. Hdl., XX V.9, p. 20, PLIV. 
Figs. 87-89; Pl. V. Figs. 90, 91. 
It is not without hesitation that I refer a lot of thin, slender, dark gray, and 
rough, straight, or somewhat bent at one end, very tapering tubes, to the above 
form of Brady; but in all other respects except the black gray color of the 
agglutinated materials they agree with the type. As usual the primordial 
portion is wanting, and a tube open at both ends only remains. Its length 
is somewhat more than 10 mm. 
Pacific. 885 fathoms; not plenty. 
BATHYSIPHON M. Sars. 
B. filiformis M. Sars. 
B. filiformis M. Sars, Christiania Vidensk. Selsk. Forhandl., 1871, p. 251. 
B. filiformis Br., 1884, Challeng. Rep., IX. p. 248, Pl. XX VI. Figs. 15-20. 
B. filiformis Gous, 1898, Arct. & Scand. Foramf., Sv. Vet. Ak. Hdl., XXV. 9, p. 16, 
Pl. ILI. Figs. 39-41. 
Very stout, thick-walled specimens occur in “ Albatross” collections. The 
bore of the tube is in such specimens narrower than in the more thin-shelled 
ones, and the rings of growth or the spurious septation very faint. The aper- 
tures are often somewhat constricted on the tapering ends. Sometimes one of 
the tube ends seems to be closed by acribrous lamina. Attains a length of 
25 mm. Forms with a more rough and sandy surface (PI. I. Figs. 11, 12) 
occur also, although some doubt may arise about their ranging with the species 
on record; the circular impressions on this form are nearly obsolete. 
Pacific. 660-1201 fathoms; not scarce. 
ALLIED Form : — 
B. rufus pe Forrn. Plate I. Fig. 10. 
B. rufum ve Fotrn, 1887, Les Bathysiphons, Acts Soc. Lin. Bordeaux, XL. 
p. 283, Pl. VII. Fig. 8. 
