4 APPENDIX TO "STUDIES ON MESOZOIC 



SYNOPSIS 



This Appendix comprises taxonomic revisions necessary to correct inadvertent errors in the 

 Supplement and to take account of subsequent taxonomic studies. The diagnoses of two 

 genera, Gonyaulacysta and Leptodinium, are emended ; a new genus, Hystrichogonyaulax, and 

 two new species, Perisseiasphaeridium eisenackii and Polysphaeridinm belgicum, are proposed ; 

 and revisions in the generic assignation of 114 other species are proposed. Typographical 

 errors are corrected and curatorial amendments are incorporated. 



I. INTRODUCTION 



In a lengthy review (1967 ; 1030-3), Tappan & Loeblich Jnr. have noted that the 

 new combinations resulting from generic reallocations proposed in our supplement 

 in many instances failed to fulfil the requirements of Article 33, para. 4 of the 

 " International Code of Botanical Nomenclature " (1961 edition, then applicable). 

 This Appendix attempts to set these matters right. In sections II-V taxonomic 

 reallocations are proposed ; in section VI, taxonomic reallocations by other authors 

 are noted with comments; and in section VII, typographical and phraseological 

 errors in the original work (some of them noted by the reviewers, others noted by 

 the authors) are corrected and certain curatorial amendments to the numbering of 

 specimens are listed. New species and new combinations which were validly 

 published in the original work are not again listed here. 



The authors gratefully acknowledge helpful comments received from Dr. William 

 R. Evitt (Stanford University, California) and Dr. Alfred R. Loeblich Jnr. (Chevron 

 Research Company, La Habra, California). The work by W. A. S. Sarjeant was 

 done whilst Visiting Professor at the University of Oklahoma, Norman, Oklahoma, 

 U.S.A. : he would like to express personal thanks to Dr. Charles J. Mankin for his 

 support and encouragement. 



II. GENERIC REALLOCATIONS (R.J.D. & G.L.W.) 



Achomosphaera alcicornu (Eisenack) Davey & Williams, comb, nov., =Hys- 



trichosphaeridium alcicornu Eisenack, 1954 ; 65-6, pi. 10 figs 1-2, text-fig. 5. 



Oligocene, East Prussia, U.S.S.R. 

 Achomosphaera grallaef or me (Brosius) Davey & Williams, comb, nov., =Hystri- 



chosphaeridium grallaeforme Brosius, 1963 ; 42 pi. 5 fig. 3, text-fig. 2 nos. 3 a-b. 



Oligocene, Germany. 

 Achomosphaera hyperacantha (Deflandre & Cookson) Davey & Williams, comb. 



nov., =Hystrichosphaera hyperacantha Deflandre & Cookson, 1955 ; 264-5, 



pi. 6 fig. 7. Miocene, Australia. 

 Achomosphaera hirundo (Eisenack) Davey & Williams, comb, nov., =Hystri- 



chosphaeridium hirundo Eisenack, 1958 ; 404-5, pi. 24 fig. 12. Lower 



Cretaceous, Germany. 

 Achomosphaera triangulata (Gerlach) Davey & Williams, comb, nov., =Balti- 



sphaeridium triangulatum Gerlach, 1961 ; 194-5, pi. 29 fig. 1. Miocene, 



Germany. 



