454 
THE VOYAGE OF H.M.S. CHALLENGER. 
Lagena longispina, H. B. Brady (globular form PL LVI. figs. 33, 36 ; compressed 
specimens, Pl. LIX. figs. 13, 14). 
Lagena longispina, Brady, 1881, Quart. Journ. Micr. Sci., vol. xxi., N. S., p. 61. 
Test entosolenian ; subglobular or pyriform, sometimes compressed ; furnished with 
a number of long basal spines ; surface smooth. Length of the body, ^g-th inch (1 mm.), 
or less. 
This again is only a variety of Lagena globosa, the shell of which is armed at the 
base with a number of spines, either irregularly placed or, in the compressed forms, 
springing from near the median line. Sometimes the spines attain large dimensions, and 
specimens have been found in which they measure nearly twice the length of the body 
of the test. 
Spinous Lagence of this description are found sparingly in deep water all over the 
world. They have been met with at about a dozen Challenger Stations in areas wide 
apart, at depths ranging from 1070 to 2740 fathoms. 
Lagena ovum, Ehrenberg, sp. (Pl. LYI. fig. 5). 
Miliola ovum, Ehrenberg, 1843, Berlin Monatsb., p. 166; — 1854, Mikrogeologie,'pl. xxiii. fig. 2; 
pl. xxix. fig. 45 ; pl. xxxi. fig. 4. 
Lagena perovalis, Giimbel, 1868, Abh. d. k. bayer. Akad. Wiss.. II. Cl., vol. x. p. 606, pl. i.fig. 7. 
„ globosa, var. ovalis,, Reuss, 1870, Sitzungsb. d. k. Ak. Wiss. Wien, vol. lxii. p. 466, No. 
1, a; — Schlicbt, 1870, Foram. Pietzpuhl., pl. i. figs. 6, 7. 
,, ovum, Marsson, 1878, Mittheil. naturw. Vereine v. Neu-Vorpom. u. Rfigen, Jabrg. x. p. 
120, pl. i. fig. 1. 
Ehrenberg’s designation may be accepted for the symmetrically elliptical varieties of 
Lagena globosa, of which Pl. LVI. fig. 5 presents a typical example. 
Lagena ovum is not common as a living organism, though it is occasionally met with 
amongst other minute thin-shelled varieties of the genus. The figured specimen is from the 
deep area of the North Pacific, 2300 fathoms. 
It occurs in the Lower Lias of Yorkshire (Tate), in the Chalk of the Islands of Moen 
and Rugen (Ehrenberg, Marsson), in the Eocene Limestones of Egypt and of the Bavarian 
Alps (Ehrenberg, Giimbel), and in the Septaria-clay of Pietzpuhl (Schlicht). 
Lagena botelliformis, H. B. Brady (PL LVI. fig. 6). 
Lagena botelliformis, Brady, 1881, Quart. Journ. Micr. Sci., vol. xxi., N. S., p. 60. 
Test entosolenian ; long, cylindrical, of even diameter, arcuate ; ends rounded ; surface 
smooth. Length about ^th inch (0‘5 mm.). 
