TROPICAL PACIFIC FORAMLNIFERA OF "ALBATROSS" 

 Table 19. — Reussdla spinulosa — material examined — Continued 



43 



Genus TRIMOSINA Cushman, 1927 



Trimosina Cushman, Contr. Cushman Lab. Foram. Res., vol. 3, p. 64, 1927, 



Genoholotype. — Mimosina spinulosa Mil'ett, var. 



Test triserial; chambers with a single acicular spine, or these may 

 become obsolete ; wall calcareous, vesicular ; aperture elongate, removed 

 from the edge, sometunes with an added series of rounded pores along 

 the base of the apertural face. Recent. 



TRIMOSINA ORIENTAUS Cnshman 



Plate 12, Figures 1-5 



Trimosina orientalis Cushman, Contr. Cushman Lab. Foram. Res., vol. 9, p. 78, 

 pi. 8, fig. 4, 1933. 



Test elongate, tapering, 2 or 3 times as long as broad, the basal 

 ends of the chambers much angled especially in the young stages; 

 chambers very distinct, inflated, the early ones very angular, those of 

 the adult becoming less so; sutures distinct, depressed; wall coarsely 

 perforate; aperture an elongate, curved, slitlike opening becoming 



408333 — 41 4 



