36 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I28 



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 vestigial septa, consisting of transverse wall thickenings. X 79- 12, Side 

 view of lectotype (B.M.N.H. No. ZF 3656), showing elongate tubular 

 appearance. X 36. From Challenger station 149 D, Balfour Bay, 

 Kerguelen Island. 



All figures are camera lucida drawings; figs. 1-3, 8, 11-12 by Helen 

 Tappan Loeblich; figs. 4-7, 9-10 by Lawrence Isham. 



Plate 4. Orthoplecta, Schnbertia, Cibicidoides, Monalysidium, 

 Webbina, Alanwoodia, and Carterina 



Figs. I, 2. Orthoplecta clavata Brady 24 



la, Side view of holotype (B.M.N.H. No. ZF 2064), showing elongate, 

 arcuate test, very irregular septa and subterminal ovate aperture, ad- 

 jacent to sutural junction, ib. Top view. From Challenger station 219A, 

 Admiralty Islands. 2, Dissected hypotype (B.M.N.H. No. ZF 3630), 

 showing spiraling internal column, which gives the irregular appearing 

 septation where it touches the outer wall. From Challenger station 185, 

 off Raine Island, Torres Strait. X 109. 



Fig. 3. Schnbertia tesscllata (Brady) 24 



3a, Side view of lectotype (B.M.N.H. No. ZF 2359), showing early 

 biserial stage, followed by a single undivided uniserial chamber and later 

 uniserial chambers subdivided into honeycomblike chamberlets. 3b, Top 

 view showing circular terminal aperture, surrounded by a slight lip. 

 X 109. From Challenger station 219A, Admiralty Islands. 



Fig. 4. Cibicidoides mundula (Brady, Parker, and Jones) 25 



4a, Dorsal view of lectotype (B.M.N.H. No. ZF 3585), showing cen- 

 tral umbo, thickened sutures, and extremely coarse perforations, which 

 occur at first only along the spiral suture, but increase gradually in 

 number and chamber area covered. 4b, Ventral view, showing large 

 umbo, peripheral keel, and smooth surface, lacking the coarse perfora- 

 tions of the dorsal side. 4c, Edge view, showing lenticular form, and 

 low arched aperture at the base of the apertural face, on the periphery, 

 and surrounded by a projecting lip. X 109. From Plnmper station 4, 

 over Abrohlos Bank, off the Coast of Brazil, South America. 



Fig. 5. Monalysidium sollasi Chapman 23 



5a, Side view of holotype (B.M.N.H. No. ZF 3577), from beach at 

 Avalau Island, Funafuti Atoll, showing subglobular chambers, at first in 

 a planispiral coil and later rectilinear, and aperture produced on a neck 

 with a phialine fimbriate lip. 5b, Edge view. X 79- 



Fig. 6. Webbina riigosa d'Orbigny 23 



6a, Dorsal view of holotype (AI.N.H.N.), showing ovate chambers 

 with fimbriate keel, and rounded terminal aperture. 6b, Ventral view, 

 showing attached side. From Recent, I'lle de Teneriffe, lies Canaries. 

 X58. 



Figs. 7, 8. Alamvoodia campanaeformis (Brady) 26 



7a, Dorsal view of paratype (B.M.N.H. No. ZF 3614), showing pro- 

 loculus and undivided second chamber. 7b, Ventral view, showing filled 

 umbilical region, and transverse wrinkles of the undivided chamber. 

 7c, Edge view, showing undivided spiraling chamber and minute pores 



