NO. 5 FORAMINIFERAL GENERA — LOEBLICH AND TAPPAN 33 



EXPLANATION OF PLATES 



Plate i. Brachysiphon, Proteon'ma, Textularioides, Planctostoma, 

 Jidlien-clla, and Miliammina 



Page 



Fig. 1. Brachysiphon corbuliformis Chapman 7 



la, Side view, ib, Top view of topotype (B.M.N.H. No. ZF 3572), 

 from oflf Great Barrier Islands, New Zealand. X 20. 



Figs. 2, 3. Reophax fusiformis (Williamson) 7 



2, Side view of lectotype of Protconina fusiformis Williamson 

 (B.M.N.H. No. ZF 3605), showing distinctly chambered test of the 

 type species of Proteonina, proving it to be a synonym of Reophax. 

 3a, Side view of paratype (B.M.N.H. No. 96.8. 13.1). 3b, Top view. 

 This paratype is the specimen figured by Williamson (1858, pi. i, fig. i). 

 Both from Recent sands from Skye. X 36. 



Figs. 4, 5. Textularioides inflata Cushman 11 



4a, Side view of topotype (U.S.N.M. No. P 2196a), showing attached 

 early portion with later part growing free from the attachment. 4b, Top 

 view, showing typical low, slitlike aperture. 5, Attached side of a topo- 

 type (U.S.N.M. No. P 2196b), showing radial structure of the agglu- 

 tinated wall, with fine perforations through the wall. Both from Alba- 

 tross station D 4900, in 139 fathoms off the coast of Japan. X 25. 



Figs. 6-12. Planctostoma luculentmn (Brady) 8 



6a, Side view. 6b, Edge view of completely textularian hypotype with 

 aperture at the base of the final chamber (U.S.N.M. No. P 2191), from 

 Johnson-Smithsonian Expedition station 93. 7, Bigenerine hypotype 

 (U.S.N.M. No. P 2193a), showing later chambers uniserial and aperture 

 terminal and central, from Challenger station 23, off Sombrero Island, 

 West Indies. 8a, Side view of typical biserial hypotype with nearly 

 terminal aperture, rather than at the base of the last chamber. 8b, Edge 

 view (U.S.N.M. No. P 2185), from Albatross station D 2150. 9, Side 

 view of larger hypotype with final chamber tending to become central 

 and with almost terminal aperture (U.S.N.M. No. P 2193b), from 

 Challenger station 23. loa, Side view of biserial hypotype, showing 

 numerous subterminal apertures. lob. Top view, showing the rare 

 multiple aperture (U.S.N.M. No. P 2188), from Challenger station 24, 

 Culebra Island, West Indies, iia. Side view of broken bigenerine hypo- 

 type showing a single terminal chamber, iib. Top view showing eccen- 

 tric terminal aperture (U.S.N.M. No. P 2195a), from Albatross station 

 D 2659. 12a, Side view of biserial hypotype (U.S.N.M. No. P 2195b). 

 12b, Top view, from Albatross station D 2659. All figures X I7- 



Figs. 13, 14. Jullienella foetida Schlumberger 11 



13, Topotype, collection of the Sorbonne, Paris, showing large flabelli- 

 form test, concentric growth ridges, and numerous rounded apertures 

 at the ends of tubular extensions. X i-5 14a, Enlarged view of surface 

 of fragment of topotype, showing the growth ridges. 14b, Enlarged view 

 of interior of fragment of topotype, showing the discontinuous radial 

 ridges which subdivide the interior but are not reflected externally, 

 and the numerous large pores leading toward the surfaces of the test. 

 X 7-7- Topotype from bank of Poor River, coast of Liberia. 



