6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
The present author has dissected a number of specimens to study 
the apertures in what Cushman and Bronnimann (1948a, p. 17) 
called “the early trochoid stage.” Results show a planispiral or slightly 
irregularly planispiral early stage with single or multiple (usually 
two), areal apertures between the chambers. All apertures are defi- 
nitely areal and are completely surrounded by very prominent lips. 
No sign of the interiomarginal apertures mentioned by Cushman and 
Bronnimann has been seen; if present at all they can only be in the 
very early chambers of the planispiral portion of the test. 
TROCHAMMINITA SALSA (Cushman and Bronnimann) 
emend. Saunders 
PLATE I, FIGURES 3-8 
Labrospira salsa CUSHMAN and BRoNNIMANN, Contr. Cushman Lab. Foram, 
Res., vol. 24, pt. I, p. 16, pl. 3, figs. 5, 6, 1948. 
Emended diagnosis——Shape of test: Planispiral, semi-involute or 
involute, with a lobate equatorial periphery. Axial periphery rounded. 
Although normally symmetrically planispiral, some individuals show 
slight irregularity of coiling. Wall: Sand grains set in fine cement; 
surface smooth, may be somewhat polished. Coarseness of wall varies 
considerably in specimens from different localities. Color fawn to light 
brown. Chambers: Slightly inflated ; seven to eight in the last whorl, 
increasing fairly rapidly in size. Earlier chambers may be partially 
visible. Sutures: Slightly curved, depressed. Aperture: In the adult 
stage may be represented by a single areal slit near the base of the 
terminal face of the chamber, or multiple pores of rounded, though 
somewhat irregular, shape. If the aperture is multiple, the pores are 
usually in a linear series where the single areal aperture would other- 
wise be situated (pl. 1, fig. 6), though some specimens show multiple 
apertures distributed widely across the terminal face. If a single aper- 
ture is present, it may show one or more constrictions, suggesting a 
tendency toward the formation of a number of separate openings. All 
apertural openings are completely surrounded by prominent lips. Dis- 
section shows that multiple apertures are not restricted to the last 
chamber but may be present in several of the chambers of the last 
whorl. Size: Hypotype of figure 3—maximum diameter 0.32 mm., 
maximum thickness 0.16 mm. Hypotype of figure 7, maximum di- 
ameter 0.43 mm., maximum thickness, 0.2 mm. Hypotype of figure 8, 
maximum diameter 0.65 mm., maximum thickness 0.29 mm. 
