On a New Type of Foraminifera. By H. B. Brady . 569 
previously formed, or at any rate appears to do so when viewed in this 
way. They are not, however, equilaterally disposed, but lie in the 
hollow of the convex side of the inclosing chamber, to which they are 
adherent, closely resembling Chilostomella in this respect. Whether 
the wall in this region is double, or the final segment leaves a portion 
Fig. 60. 
X 200 
Seabrocikia pellucida. 
Fig. 1 , a, b. Lateral aspects, c. Oral aspect. 
Fig. 2. Specimen mounted in Canada balsam and viewed as a transparent object. 
(All magnified 200 diameters.) 
of the wall of the penultimate exposed (as in Biloculina), I have not 
been able to make out satisfactorily. The outline of the penultimate 
segment, and sometimes that of the ante-penultimate, can he easily 
traced on -the exterior, hut this may be entirely due to the tenuity 
and transparency of the walls ; at the same time it is possible that 
