Plate 74. CRUCILOCULINA 



Page 



Figures la-2c. Cruciloculina triangularis d'Orbigny 234 

 la, Top view of lectotype (Mus. Hist. Nat. 

 Paris) from Recent dredgings near the Falkland 

 Islands, showing cruciform aperture, sharp angles, 

 and flat to slightly convex sides, lb, Side view, 

 toward angle opposite last chamber, showing 

 slightl}- ovate outline. X 31. 2a, Side view 

 of topotype (USNM P4520) with last chamber 

 at right. 2b, Side view with last cliamber at 

 left. 2c, Top view showing cruciform aperture. 

 X 24. 



Figures 3a-7. Cruciloculina ericsoni Loeblich and 234 

 Tappan, new species 



3a, Side view of holotype (USNM P3140) from 

 Recent dredgings near Ireland, looking toward 

 earliest chamber of final whorl, showing nearh' 

 circular outline and relatively strong chamber 

 overlap. 3b, Opposite side view. 3c, Top 

 view, showing broadly rounded chambers and 

 slightly dendritic cruciform aperture with slight 

 lip. 4-7, Top views of paratypes (USNM 

 P433Sa-d) showing increased complexity of 

 aperture with increase in test size. X 40. 



Figures 8-1 Ic. Cruciloculina asanoi Loeblich and 233 

 Tappan, new species 



8, 9, Top views of paratypes (USNM P4267a, 

 b) from Recent dredgings in the Caribbean, 

 showing cruciform aperture, slighth' rounded 



Pape 

 angles, and convex sides. 10a, 10b, Opposite 

 views of juvenile paratype (USNM P4267c). 

 lOc, Top view, showing triradiate aperture in the 

 early stage. 11a, Side view of holotype (USNM 

 P4880) showing ovate outline and slight amount 

 of chamber overlap, lib. Side view with final 

 chamber at right, lie. Top view, showing 

 cruciform aperture. X 31. 



Fu;uRES 12a c. Cruciloculina japonica \sAno 234- 



12a, Side view of topotype (USNM P4339) 

 from the Pliocene of Japan showing ovate out- 

 line, rapid increase in chamber size and large 

 degree of chamber overlap. 12b, Opposite view. 

 12c, Top view showing rounded angles and 

 dendritic tendencv of cruciform aperture. X 

 31. 



Figures 13-16. Cruciloculina striata Loeblich and 234 

 Tappan, new species 



13, 14, 16, Top views of paratypes (L'SNM 

 P4265a-c) from Recent dredgings in the Carib- 

 bean, showing ovate section, strong amount of 

 chamber overlap, dendritic variation of cruciform 

 aperture, and striate wall surface. 15a, b. Op- 

 posite sides of holotype (USNM P4264) showing 

 ovate side view, striate surface, and rapid increase 

 in chamber size. 15c, Top view. X 28. 

 y\ll figures are camera lucida drawings; tig. 1 by 



Helen Tappan Loeblich, others by Patricia Isham. 



311 



