. Bulletins of American paleontology. 18 1:26 24:2 LOCKHARfIA Tt'xt figure 1. The left liaiul figure represents a diagraminatic sketch (jf tlie internal i-tructure of Lockhariia; the central figure represents a iliagramniatie skelch of the internal structure of Enialia (both after Davies) ; the right hand figui'e represents a camera lucida sketch of Bo- tolifi initial cham))ers, those on ventral side long, thick, separating wideh as they approached exterior; those on dorsal side short, thin, compactl\- grouped, spreading slightl}' as they near surface of the te
. Bulletins of American paleontology. 18 1:26 24:2 LOCKHARfIA Tt'xt figure 1. The left liaiul figure represents a diagraminatic sketch (jf tlie internal i-tructure of Lockhariia; the central figure represents a iliagramniatie skelch of the internal structure of Enialia (both after Davies) ; the right hand figui'e represents a camera lucida sketch of Bo- tolifi initial cham))ers, those on ventral side long, thick, separating wideh as they approached exterior; those on dorsal side short, thin, compactl\- grouped, spreading slightl}' as they near surface of the ; {examination of figures 2, 3, 4, Plate 5, will show that thi^ description is entirely in error. The supi[>osed dorsal pillars are the coarselx- i)erforated wall of the dorsal side of the test. Nor do the ventral pillars penetrate to the emhryonic chambers. However, it is not necessary to dwell on this as the figures dem- onstrate the true characters readily. Genus TURBINULINA Risso, 1826 Les T'urhinuliiics d'Orbigny, 1826 Genotype hereby designated, T. ilaJicn (d'Orbigny) =A''rtM/? brcctirii Linne (fide Parker and Jones, 1871). Davies (1932-33, p. 412) has written: "Before heccarii (or any other species can be treated as even inclusive among the Rotalia (s. str.), it must be shown to be generically identifiable with R. trochidijormis. If not so identifiable, it must be referred to some other genus; perhaps beccarii itself should be returned to D'Orbigny's genus Turbinulina of which D'Orbigny quoted it as a leading ; In the course of this investigation several thin sections of R. beccarii and R. mexicana, variety mecatepeccnsis were made. These forms exhibit similar arrangements and structures, but these are different from those of R. trochidijormis and R. cush- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not
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