Direction 52: Determination of the Gender to be Attributed to the Generic Names Cryptobranchus Leuckart, 1821 (Class Amphibia) and Eremias Wiegmann, 1834 (Class Reptilia) Placed on the Official List of Generic Names in Zoology by the Ruling Given in Opinion 92

Direction 53: Addition to the Official List of Family-Group Names in Zoology of Family-group Names Based upon the Names of Certain Genera of the Order Carnivora (Class Mammalia) Placed on the Official List of Generic Names in Zoology by the Ruling Given in Opinion 384 and Matters Incidental thereto . .

Direction 54: Addition to the Official List of Family-Group Names in Zoology, or, as the Case may be, to the Official Index of Rejected and Invalid Family-Group Names in Zoology of the Family-group Names Involved in the Cases Dealt with in Volume 12 of the Opinions and Declarations Rendered by the International Commission on Zoological Nomenclature, other than Family-group Names already Dealt with in those Opinions

Direction 55: Insertion in the Official List of Generic Names in Zoology of an Entry Relating to the Generic Name Grus Brisson, 1760 (Class Aves) (Correction of an Error in the Ruling Given in Opinion 103)

Direction 56: Completion and in Certain Cases Correction of Entries Relating to the Names of Genera Belonging to the Classes Pisces, Amphibia and Reptilia Made in the Official List of Generic Names in Zoology in the Period up to the End of 1936

Direction 57: Addition to the Official List of Specific Names in Zoology (a) of the Specific Names of Forty-seven Species Belonging to the Classes Cyclostomata, Pisces, Amphibia and Reptilia, each of which is the Type Species of a Genus, the Name of which was Placed on the Official List of Generic Names in Zoology in the Period up to the End of 1936 and (b) of the Specific Name of one Species of the Class Amphibia which is Currently Treated as Senior Subjective Synonym of the Name of such a Species

Direction 58: Addition to the Official List of Family-Group Names in Zoology or, as the Case may be, to the Official Index of Rejected and Invalid Family-Group Names in Zoology of the Family-group Names involved in the Cases Dealt with in Volume 13 of the Work Opinions and Declarations Rendered by the International Commission on Zoological Nomenclature, Other than the Family-group Names Involved in Connection with the Generic Names Dealt with in Opinion 401

Direction 59: Determination (a) of the Method to be Followed in Citing for the Purposes of Zoological Nomenclature the Several Portions in which the Lepidotteri Volume by Orenzio Gabriele Costa of the Work Entitled Fauna del Regno di Napoli were Published, and (b) of the Dates which for the Foregoing Purposes are to be Assigned to each of those Portions (i)—(xviii)

Direction 62: Addition to the Official List of Family-Group Names in Zoology or, as the case may be, to the Official Index of Rejected and Invalid Family-Group Names in Zoology of the Family-group Names Involved in the Cases Dealt with in Volume 14 of the Work Opinions and Declarations Rendered by the International Commission on Zoological Nomenclature, Other than Names Already Dealt with either in Opinions Included in that Volume or in a Separate Direction

Direction 70: Validation under the Plenary Powers of the Family-group Name arieticeratinae Howarth,1955 (Class Cephalopoda, Order Ammonoidea) (Direction Supplementary to Opinion 337)